feat: add dependabot auto-merge workflow

fix: sync bun.lock to package.json (dependabot compatibility)
Auto-merge PR #2
2026-08-25 20:33:03 +07:00 · 2026-08-25 20:22:00 +07:00 · 2026-08-25 11:20:25 +00:00 · 2026-08-25 11:20:17 +00:00 · 2026-08-25 18:16:59 +07:00 · 2026-08-25 18:13:13 +07:00
136 changed files with 12205 additions and 4212 deletions
@@ -0,0 +1,12 @@
+{
+  "sessionStartHook": "echo '📁 TeleUploader — Telegram file uploader backend' && echo '   Bun project — use bun, not node/npm/yarn' && echo '   Tests: bun test --preload ./test/helpers/setup-env.ts <file>'",
+  "permissions": {
+    "allow": [
+      "Bun(bun test *)",
+      "Bun(bunx *)",
+      "Bun(bun run *)",
+      "Bun(bun build *)",
+      "Bun(bun install)"
+    ]
+  }
+}
@@ -1,14 +1,13 @@
-BOT_TOKEN=isi_token_bot_telegram
-ADDITIONAL_BOT_TOKENS=token_cadangan_1,token_cadangan_2,token_cadangan_3
+BOT_TOKENS=isi_token_bot_1,isi_token_bot_2,isi_token_bot_3
 STORAGE_CHANNEL_ID=-1001234567890
-BASE_URL=https://tele.asepharyana.my.id
-DATABASE_URL=postgresql://user:password@localhost:5432/telegram_uploader
-PORT=3000
+BASE_URL=https://upload.asepharyana.my.id
+DATABASE_URL=postgresql://asephs:***@100.121.180.82:6432/uploader
+PORT=4000
 NODE_ENV=production
 LOG_LEVEL=info
 RATE_LIMIT_WINDOW_MS=60000
 RATE_LIMIT_MAX_REQUESTS=30
-# TRUST_PROXY=true  # Uncomment when behind reverse proxy (Traefik, Nginx) for correct client IP detection
+# TRUST_PROXY=true  # Uncomment when behind reverse proxy (Caddy, Nginx) for correct client IP detection

 # S3-compatible API credentials
 # S3_ACCESS_KEY=filedrop-admin
@@ -17,7 +16,8 @@ RATE_LIMIT_MAX_REQUESTS=30
 # S3_VHOST_DOMAINS=upload.asepharyana.my.id,upload.asepharyana.web.id

 # Telegram-safe internal chunking for large stored files
-# TELEGRAM_CHUNK_SIZE_BYTES=20971520
+# Telegram getFile download limit is 20 MB; guard rejects > 19922944 (19 MB)
+# TELEGRAM_CHUNK_SIZE_BYTES=19922944
 # COMPRESS_CHUNKED_UPLOADS=true
 # CHUNK_COMPRESSION_MIN_SIZE_BYTES=4096

@@ -1,48 +0,0 @@
-name: Deploy FileDrop
-
-on:
-  push:
-    branches:
-      - main
-
-jobs:
-  deploy:
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Check out repository
-        uses: actions/checkout@v4
-
-      - name: Set up Bun
-        uses: oven-sh/setup-bun@v2
-        with:
-          bun-version: latest
-
-      - name: Install dependencies
-        run: bun install --frozen-lockfile
-
-      - name: Lint
-        run: bun run lint
-
-      - name: Build
-        run: bun run build
-
-      - name: Deploy to VPS
-        shell: bash
-        env:
-          VPS_HOST: ${{ secrets.VPS_HOST }}
-          VPS_USER: ${{ secrets.VPS_USER }}
-          VPS_SSH_KEY_VALUE: ${{ secrets.VPS_SSH_KEY }}
-          PRODUCTION_ENV: ${{ secrets.PRODUCTION_ENV }}
-          ADMIN_PASSWORD: ${{ secrets.ADMIN_PASSWORD }}
-        run: |
-          set -eu
-
-          key_file="${RUNNER_TEMP:-/tmp}/filedrop_deploy_key"
-          printf '%s\n' "$VPS_SSH_KEY_VALUE" > "$key_file"
-          chmod 600 "$key_file"
-
-          printf '%s\n' "$PRODUCTION_ENV" > .env
-          chmod 600 .env
-
-          VPS_SSH_KEY="$key_file" ./deploy.sh --no-build
@@ -0,0 +1,24 @@
+name: dependabot-auto-merge
+
+on:
+  pull_request:
+    branches:
+      - main
+      - master
+
+# Auto-merge Dependabot PRs with passing CI
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  dependabot:
+    runs-on: ubuntu-latest
+    # Only for Dependabot PRs
+    if: github.actor == 'dependabot[bot]'
+    steps:
+      - name: Auto-merge
+        run: gh pr merge --auto --merge "$PR_NUMBER"
+        env:
+          PR_NUMBER: ${{ github.event.number }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -0,0 +1,31 @@
+version: 2
+updates:
+  - package-ecosystem: "npm"
+    directory: "/"
+    schedule:
+      interval: "daily"
+      day: "monday"
+      time: "05:00"
+      timezone: "Asia/Makassar"
+    open-pull-requests-limit: 10
+    assignees:
+      - "asepharyana"
+    commit-message:
+      prefix: "chore"
+      prefix-development: "chore"
+      include: "scope"
+    reviewers:
+      - "asepharyana"
+    labels:
+      - "dependencies"
+    groups:
+      production:
+        dependency-type: "production"
+        update-types:
+          - "minor"
+          - "patch"
+      development:
+        dependency-type: "development"
+        update-types:
+          - "minor"
+          - "patch"
@@ -0,0 +1,112 @@
+name: Build & Deploy (Nix)
+
+on:
+  push:
+    branches: [main]
+  workflow_dispatch:
+
+concurrency:
+  group: deploy
+  cancel-in-progress: false
+
+permissions:
+  contents: read
+  id-token: write
+
+env:
+  VPS_HOST: ${{ secrets.VPS_HOST }}
+  VPS_USER: ${{ secrets.VPS_USER }}
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v7
+        with:
+          fetch-depth: 0
+          submodules: false
+
+      - uses: oven-sh/setup-bun@v2
+        with:
+          bun-version: latest
+
+      - name: Install deps
+        run: bun install --frozen-lockfile
+
+      - name: Lint (biome)
+        run: bunx biome check src test
+
+  build-and-deploy:
+    needs: lint
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v7
+        with:
+          fetch-depth: 0
+          submodules: false
+
+      - name: Install Nix
+        uses: DeterminateSystems/nix-installer-action@v22
+        with:
+          determinate: false
+          extra-conf: |
+            sandbox = false
+            accept-flake-config = true
+
+      - name: Cache Nix
+        uses: DeterminateSystems/magic-nix-cache-action@v14
+        with:
+          use-flakehub: false
+
+      - name: Build teleuploader
+        id: build
+        run: |
+          nix build .#teleuploader --impure --option sandbox false --print-build-logs
+          STORE_PATH=$(readlink result)
+          echo "store-path=$STORE_PATH" >> "$GITHUB_OUTPUT"
+          echo "Build OK: $STORE_PATH"
+
+      - name: Setup SSH key
+        env:
+          SSH_KEY: ${{ secrets.SSH_PRIVATE_KEY }}
+        run: |
+          mkdir -p ~/.ssh
+          echo "$SSH_KEY" > ~/.ssh/id_ed25519
+          chmod 600 ~/.ssh/id_ed25519
+          sed -i 's/\r$//' ~/.ssh/id_ed25519
+          ssh-keygen -y -f ~/.ssh/id_ed25519 >/dev/null 2>&1 || { echo "SSH key invalid"; exit 1; }
+          ssh-keyscan -H "$VPS_HOST" >> ~/.ssh/known_hosts 2>/dev/null
+
+      - name: Deploy teleuploader to VPS
+        run: |
+          STORE_PATH="${{ steps.build.outputs.store-path }}"
+          echo "=== Copying teleuploader: $STORE_PATH ==="
+          nix copy --to "ssh://$VPS_USER@$VPS_HOST" "$STORE_PATH"
+
+          echo "=== Updating profile ==="
+          ssh "$VPS_USER@$VPS_HOST" "sudo /nix/var/nix/profiles/default/bin/nix-env --profile /nix/var/nix/profiles/teleuploader --set '$STORE_PATH'"
+
+          echo "=== Restarting service ==="
+          ssh "$VPS_USER@$VPS_HOST" "sudo systemctl daemon-reload && sudo systemctl restart teleuploader && sleep 3 && sudo systemctl is-active teleuploader"
+          echo "✅ teleuploader deployed"
+
+  cleanup:
+    # Bersihkan sampah Nix di VPS SETELAH deploy: hapus generasi profile lama
+    # + nix store gc. Profil yang sedang dipakai tidak disentuh.
+    needs: build-and-deploy
+    if: always()
+    runs-on: ubuntu-latest
+    steps:
+      - name: Nix GC on VPS
+        env:
+          VPS_HOST: ${{ secrets.VPS_HOST }}
+          VPS_USER: ${{ secrets.VPS_USER }}
+          SSH_KEY: ${{ secrets.SSH_PRIVATE_KEY }}
+        run: |
+          mkdir -p ~/.ssh
+          echo "$SSH_KEY" > ~/.ssh/id_ed25519
+          chmod 600 ~/.ssh/id_ed25519
+          ssh-keyscan -H "$VPS_HOST" >> ~/.ssh/known_hosts 2>/dev/null
+          ssh "$VPS_USER@$VPS_HOST" "sudo /usr/local/bin/nix-gc-vps.sh" || echo "⚠️ Nix GC gagal (non-fatal)"
@@ -0,0 +1,20 @@
+name: Publish to FlakeHub
+
+on:
+  push:
+    branches: [main, master]
+  workflow_dispatch:
+
+jobs:
+  flakehub-publish:
+    runs-on: ubuntu-latest
+    permissions:
+      id-token: write
+      contents: read
+    steps:
+      - uses: actions/checkout@v6
+      - uses: DeterminateSystems/determinate-nix-action@main
+      - uses: DeterminateSystems/flakehub-push@main
+        with:
+          visibility: public
+          rolling: true
@@ -0,0 +1,26 @@
+name: Mirror to Gitea
+
+on:
+  push:
+    branches: [main, master]
+  workflow_dispatch:
+
+permissions:
+  contents: write
+
+jobs:
+  mirror:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v7
+        with:
+          fetch-depth: 0
+
+      - name: Mirror to Gitea
+        env:
+          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
+        run: |
+          git remote add gitea "https://oauth2:${GITEA_TOKEN}@git.imrnes.team/MythEclipse/TeleUploader.git"
+          git push --mirror gitea
+          echo "✅ Mirrored to Gitea (MythEclipse/TeleUploader)"
@@ -36,3 +36,4 @@ S3_GUIDE.md

 # Finder (MacOS) folder config
 .DS_Store
+result
@@ -0,0 +1 @@
+bun run lint
@@ -20,11 +20,17 @@ Default to using Bun instead of Node.js.
 - Bun.$`ls` instead of execa.
 - Rate limiter lokal dinonaktifkan (`checkRateLimit` di `src/utils/rateLimit.ts` selalu mengembalikan `true`).
 - Telegram API memiliki auto-retry otomatis jika mengembalikan error 429 (Too Many Requests) menggunakan pool Telegraf multi-bot di `src/utils/telegram.ts`.
- Multi-bot dikonfigurasi melalui `ADDITIONAL_BOT_TOKENS` (koma terpisah) di `.env` yang digabung dengan `BOT_TOKEN` utama (total 4 bot).
+|- Multi-bot dikonfigurasi melalui `BOT_TOKENS` (koma terpisah) di `.env` — semua token bot digabung dalam satu variabel.
 - Menggunakan mekanisme rotasi instan jika ada bot yang terkena rate limit 429 sebelum memutuskan untuk sleep.
 - Pengiriman berkas ke Telegram dieksekusi secara responsif dan paralel penuh tanpa batas konkurensi/antrian.
 - Berkas API upload ditulis secara sementara ke disk `/tmp/teleuploader-*` dan di-stream ke Telegram menggunakan `fs.createReadStream` (RAM-optimized) lalu dihapus otomatis setelah 50ms (timeout aman).

+## Chunk size (TELEGRAM_CHUNK_SIZE_BYTES)
+
+- Batas keras: Telegram Bot API `getFile` hanya bisa resolve file ≤ 20 MB — di atas itu error `Bad Request: file is too big` dan part tidak bisa di-download.
+- Guard fail-fast di `src/env.ts`: service MENOLAK start (exit non-zero) jika `TELEGRAM_CHUNK_SIZE_BYTES` > 19922944 (19 MB, margin aman dari limit 20 MB). Konstanta: `TELEGRAM_CHUNK_SIZE_MAX_BYTES` di `src/shared/utils/validation.ts`, juga dipakai `asSafeChunkSize()` di runtime.
+- Default 19 MB; berlaku untuk chunked storage DAN S3 multipart parts (sama-sama disimpan ke Telegram lalu di-resolve via getFile).
+
 ## Testing

 Use `bun test` to run tests. Jalankan tes secara spesifik (misal `bun test test/rateLimit.test.ts`) untuk menghindari polusi mock antar berkas tes ketika dijalankan bersamaan.
@@ -1,3 +1,7 @@
+# ⚠️ LEGACY — pembangunan & deploy sekarang DISARANKAN memakai Nix + systemd
+# (lihat flake.nix + .github/workflows/deploy.yml + Caddy reverse proxy di orangevps).
+# Dockerfile ini hanya dipertahankan untuk konteks historis / fallback, bukan deploy produksi.
+
 # Stage 1: Builder
 FROM oven/bun:alpine AS builder

@@ -21,12 +25,12 @@ WORKDIR /usr/src/app
 # Copy built files, schema, and package.json
 COPY --from=builder /usr/src/app/dist/index.js ./dist/index.js
 COPY --from=builder /usr/src/app/dist/migrate.js ./dist/migrate.js
-COPY --from=builder /usr/src/app/src/home.html ./home.html
+COPY --from=builder /usr/src/app/src/home.html ./dist/home.html
 COPY schema.sql ./
 COPY package.json ./

 # Expose port
-EXPOSE 3000
+EXPOSE 4000

 # Start server
 CMD ["bun", "dist/index.js"]
@@ -4,12 +4,11 @@ Backend production-ready untuk upload file ke Telegram yang tersimpan di private

 ## Setup

-1. Install PostgreSQL database
-2. Buat database: `createdb telegram_uploader`
-3. Setup environment: `cp .env.example .env`
-4. Edit `.env` dengan nilai yang sesuai
-5. Create table: `bun run db:migrate`
-6. Install dependencies: `bun install`
+1. Siapkan PostgreSQL database (produksi: database `uploader` via PgBouncer pool di `100.121.180.82:6432`)
+2. Setup environment: `cp .env.example .env`
+3. Edit `.env` dengan nilai yang sesuai (lihat `DATABASE_URL`, `PORT=4000`)
+4. Create table: `bun run db:migrate`
+5. Install dependencies: `bun install`

 ## Telegram Private Channel Setup

@@ -24,6 +23,20 @@ bun run dev      # Development mode
 bun run start    # Production mode
 ```

+## Deployment (Produksi — Nix + systemd)
+
+> Infra lama berbasis Docker + Traefik sudah dihapus dari orangevps (2026-08-02).
+
+- **Host**: orangevps
+- **Service**: systemd unit `teleuploader` (env via `/etc/teleuploader/env` / BWS secrets)
+- **Build**: Nix flake (`flake.nix`) — `nix build .#teleuploader` → `nix copy` → `systemctl restart teleuploader`
+- **CI**: `.github/workflows/deploy.yml` (Gitea Actions / GitHub Actions)
+- **Port**: `4000` (`PORT` env)
+- **Domain**: `https://upload.asepharyana.my.id`
+- **Reverse proxy**: Caddy (bukan Traefik/Docker)
+- **Database**: `postgresql://asephs:***@100.121.180.82:6432/uploader` (PgBouncer pool di imrnes, **bukan** 5432/localhost)
+- `deploy.sh` & `Dockerfile` & `docker-compose.yml` bersifat **legacy** — jangan dipakai untuk deploy produksi.
+
 ## API Endpoints

 - `POST /api/upload` - Upload file
@@ -34,7 +47,7 @@ bun run start    # Production mode
 ## FAQ

 **URL permanen maksudnya apa?**
-URL backend tetap permanen: `https://tele.asepharyana.my.id/f/{public_id}`
+URL backend tetap permanen: `https://upload.asepharyana.my.id/f/{public_id}`
 Ini berarti URL service Anda fix, bukan jaminan file Telegram abadi.

 ## Testing
@@ -1,4 +1,9 @@
 #!/bin/bash
+# ⚠️ LEGACY — Script deploy lama berbasis Docker. Sejak 2026-08-02 Docker dihapus
+# dari orangevps; produksi kini memakai Nix + systemd (lihat flake.nix, dan CI
+# .github/workflows/deploy.yml yang menjalankan `nix build` → `nix copy` →
+# `systemctl restart teleuploader`). Berkas ini hanya dipertahankan sebagai
+# referensi historis — JANGAN dipakai untuk deploy produksi.
 # ─── FileDrop Deploy Script ──────────────────────────────────────────────────
 # Builds the Bun app locally and deploys to the VPS via Docker.
 #
@@ -155,12 +160,15 @@ vps "rm -rf '${DEPLOY_DIR}.old' && mv '${DEPLOY_DIR}' '${DEPLOY_DIR}.old' 2>/dev

 ok "Files shipped to ${DEPLOY_DIR}"

-# ── 5. Build Docker image & restart on VPS ───────────────────────────────────
+# ── 5. Build Docker image & restart ──────────────────────────────────────
 log "Building Docker image on VPS..."
 vps "cd '${DEPLOY_DIR}' && docker compose build --pull 2>&1" | tail -5 || die "Docker build failed on VPS"

-log "Restarting container..."
+log "Restarting container (zero-downtime via healthcheck)..."
+vps "cd '${DEPLOY_DIR}' && docker compose up -d --force-recreate --wait --wait-timeout 60 2>&1" || {
+  log "Warn: --wait not supported on this docker-compose version, falling back to basic restart"
  vps "cd '${DEPLOY_DIR}' && docker compose up -d --force-recreate 2>&1" || die "Container restart failed"
+}

 # ── 6. Verify container is running ────────────────────────────────────────────
 log "Waiting for container to be healthy..."
@@ -1,19 +1,22 @@
+# ⚠️ LEGACY — Docker/Traefik sudah DIHAPUS dari VPS produksi (orangevps).
+# Deploy sekarang Nix + systemd (flake.nix + .github/workflows/deploy.yml) dengan
+# Caddy reverse proxy. Berkas ini hanya dipertahankan sebagai referensi historis.
 services:
  app:
    build: .
    container_name: filedrop-app
    restart: always
    environment:
+      - BOT_TOKENS=${BOT_TOKENS}
      - BOT_TOKEN=${BOT_TOKEN}
      - ADDITIONAL_BOT_TOKENS=${ADDITIONAL_BOT_TOKENS:-}
      - STORAGE_CHANNEL_ID=${STORAGE_CHANNEL_ID}
      - BASE_URL=${BASE_URL}
      - DATABASE_URL=${DATABASE_URL}
-      - PORT=3000
+      - PORT=4000
      - NODE_ENV=production
      - LOG_LEVEL=info
      - TRUST_PROXY=true
-      - UPLOAD_CONCURRENCY=${UPLOAD_CONCURRENCY:-8}
      - BATCH_MAX_ITEMS=${BATCH_MAX_ITEMS:-20}
      - BATCH_MAX_SIZE_BYTES=${BATCH_MAX_SIZE_BYTES:-524288000}
      - MAX_REQUEST_BODY_BYTES=${MAX_REQUEST_BODY_BYTES:-2147483648}
@@ -46,7 +49,7 @@ services:
    healthcheck:
      test:
        - CMD-SHELL
-        - "bun -e \"fetch('http://localhost:3000/health').then(r => r.status === 200 ? process.exit(0) : process.exit(1))\""
+        - "bun -e \"fetch('http://localhost:4000/health').then(r => r.status === 200 ? process.exit(0) : process.exit(1))\""
      interval: 30s
      timeout: 10s
      retries: 3
@@ -59,7 +62,7 @@ services:
      - "traefik.http.routers.filedrop.entrypoints=websecure"
      - "traefik.http.routers.filedrop.tls=true"
      - "traefik.http.routers.filedrop.tls.certresolver=cloudflare"
-      - "traefik.http.services.filedrop.loadbalancer.server.port=3000"
+      - "traefik.http.services.filedrop.loadbalancer.server.port=4000"
      - "traefik.http.middlewares.filedrop-rl.ratelimit.average=300"
      - "traefik.http.middlewares.filedrop-rl.ratelimit.burst=100"
      - "traefik.http.middlewares.filedrop-rl.ratelimit.period=1m"
@@ -1,5 +1,10 @@
 # Telegram Bot Uploader Backend Implementation Plan

+> ⚠️ **LEGACY** — Dokumen historis (2026-05-17). Port & infrastruktur sudah berubah:
+> produksi kini berjalan di port `4000` (Nix + systemd + Caddy, domain `upload.asepharyana.my.id`)
+> dan database via PgBouncer pool `100.121.180.82:6432` (bukan port 5432, bukan localhost).
+
+
 > **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.

 **Goal:** Production-ready backend for Telegram file uploader with dual upload methods (bot + HTTP API), PostgreSQL storage, and redirect-based downloads.
@@ -75,9 +80,9 @@ schema.sql
 ```bash
 BOT_TOKEN=isi_token_bot_telegram
 STORAGE_CHANNEL_ID=-1001234567890
-BASE_URL=https://tele.asepharyana.my.id
-DATABASE_URL=postgresql://user:password@localhost:5432/telegram_uploader
-PORT=3000
+BASE_URL=https://upload.asepharyana.my.id
+DATABASE_URL=postgresql://asephs:***@100.121.180.82:6432/uploader
+PORT=4000
 NODE_ENV=production
 LOG_LEVEL=info
 RATE_LIMIT_WINDOW_MS=60000
@@ -148,7 +153,7 @@ bun run start    # Production mode
 ## FAQ

 **URL permanen maksudnya apa?**
-URL backend tetap permanen: `https://tele.asepharyana.my.id/f/{public_id}`
+URL backend tetap permanen: `https://upload.asepharyana.my.id/f/{public_id}`
 Ini berarti URL service Anda fix, bukan jaminan file Telegram abadi.

 ## Testing
@@ -250,7 +255,7 @@ export const config = {
  storageChatId: parseInt(process.env.STORAGE_CHANNEL_ID, 10),
  baseUrl: process.env.BASE_URL,
  databaseUrl: process.env.DATABASE_URL,
-  port: parseInt(process.env.PORT, 10) || 3000,
+  port: parseInt(process.env.PORT, 10) || 4000,
  nodeEnv: process.env.NODE_ENV || 'development',
  logLevel: process.env.LOG_LEVEL || 'info',
  rateLimitWindowMs: parseInt(process.env.RATE_LIMIT_WINDOW_MS, 10) || 60000,
@@ -1009,14 +1014,14 @@ bun run dev
 - [ ] **Step 2: Test health endpoint**

 ```bash
-curl http://localhost:3000/health
+curl http://localhost:4000/health
 # Expected: {"status":"ok"}
 ```

 - [ ] **Step 3: Upload test file via HTTP API (multipart)**

 ```bash
-curl -X POST http://localhost:3000/api/upload \
+curl -X POST http://localhost:4000/api/upload \
  -F "file=@/path/to/testfile.txt" \
  -F "fileName=test.txt"
 ```
@@ -1024,14 +1029,14 @@ curl -X POST http://localhost:3000/api/upload \
 - [ ] **Step 4: Check file info endpoint**

 ```bash
-curl http://localhost:3000/file/{public_id}/info
+curl http://localhost:4000/file/{public_id}/info
 # Expected: JSON with file metadata
 ```

 - [ ] **Step 5: Download redirect**

 ```bash
-curl -I http://localhost:3000/f/{public_id}
+curl -I http://localhost:4000/f/{public_id}
 # Expected: HTTP 302 with Location header to Telegram CDN
 ```

@@ -1047,7 +1052,7 @@ curl -I http://localhost:3000/f/{public_id}
 - [ ] **Step 7: Test error handling (file too large)**

 ```bash
-curl -X POST http://localhost:3000/api/upload \
+curl -X POST http://localhost:4000/api/upload \
  -F "file=@/dev/null" \
  -H "Content-Length: 10000000000"
 # Expected: HTTP 400 with error message
@@ -1057,7 +1062,7 @@ curl -X POST http://localhost:3000/api/upload \

 ```bash
 # Send 31 requests within 1 minute
-for i in {1..31}; do curl http://localhost:3000/f/{public_id} & done
+for i in {1..31}; do curl http://localhost:4000/f/{public_id} & done
 wait
 # Expected: First 30 succeed, last one returns 429
 ```
@@ -1066,7 +1071,7 @@ wait

 ```bash
 # In terminal 1: bun run dev
-# In terminal 2: curl http://localhost:3000/health && sleep 0.1 && curl http://localhost:3000/health
+# In terminal 2: curl http://localhost:4000/health && sleep 0.1 && curl http://localhost:4000/health
 # Send SIGINT to server (Ctrl+C in terminal 1)
 # Check if server stops cleanly, logs show shutdown sequence
 ```
@@ -1,5 +1,11 @@
 # Docker, Traefik, and GitHub Actions Deployment Plan

+> ⚠️ **LEGACY** — Dokumen historis (2026-05-18). Arsitektur Docker + Traefik +
+> GitHub Actions sudah digantikan (2026-08-02) oleh Nix + systemd + Caddy di
+> orangevps: port `4000`, domain `upload.asepharyana.my.id`, database via
+> PgBouncer pool `100.121.180.82:6432` (bukan 5432/localhost).
+
+
 > **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.

 **Goal:** Containerize TeleUploader using Bun, configure Traefik labels for routing `upload.asepharyana.my.id`, and set up full GitHub Actions CI/CD to VPS `45.127.35.244`.
@@ -57,7 +63,7 @@ WORKDIR /usr/src/app

 # Set production environment variables
 ENV NODE_ENV=production
-ENV PORT=3000
+ENV PORT=4000

 # Copy necessary files from builder and repo
 COPY --from=builder /usr/src/app/dist/index.js ./dist/index.js
@@ -65,7 +71,7 @@ COPY --from=builder /usr/src/app/package.json ./package.json
 COPY schema.sql ./schema.sql

 # Expose server port
-EXPOSE 3000
+EXPOSE 4000

 # Start server
 CMD ["bun", "dist/index.js"]
@@ -104,7 +110,7 @@ services:
      - STORAGE_CHANNEL_ID=${STORAGE_CHANNEL_ID}
      - BASE_URL=${BASE_URL}
      - DATABASE_URL=${DATABASE_URL}
-      - PORT=3000
+      - PORT=4000
      - NODE_ENV=production
      - LOG_LEVEL=info
    networks:
@@ -115,7 +121,7 @@ services:
      - "traefik.http.routers.teleuploader.entrypoints=websecure"
      - "traefik.http.routers.teleuploader.tls=true"
      - "traefik.http.routers.teleuploader.tls.certresolver=letsencrypt"
-      - "traefik.http.services.teleuploader.loadbalancer.server.port=3000"
+      - "traefik.http.services.teleuploader.loadbalancer.server.port=4000"

 networks:
  app-shared-net:
@@ -166,9 +172,9 @@ jobs:
        env:
          BOT_TOKEN: "mock_token"
          STORAGE_CHANNEL_ID: "123456"
-          BASE_URL: "http://localhost:3000"
-          DATABASE_URL: "postgresql://postgres:postgres@localhost:5432/postgres"
-          PORT: "3000"
+          BASE_URL: "http://localhost:4000"
+          DATABASE_URL: "postgresql://asephs:***@100.121.180.82:6432/postgres"
+          PORT: "4000"
        run: bun run test

  build-and-push:
@@ -223,7 +229,7 @@ jobs:
                  - STORAGE_CHANNEL_ID=${STORAGE_CHANNEL_ID}
                  - BASE_URL=${BASE_URL}
                  - DATABASE_URL=${DATABASE_URL}
-                  - PORT=3000
+                  - PORT=4000
                  - NODE_ENV=production
                  - LOG_LEVEL=info
                networks:
@@ -234,7 +240,7 @@ jobs:
                  - "traefik.http.routers.teleuploader.entrypoints=websecure"
                  - "traefik.http.routers.teleuploader.tls=true"
                  - "traefik.http.routers.teleuploader.tls.certresolver=letsencrypt"
-                  - "traefik.http.services.teleuploader.loadbalancer.server.port=3000"
+                  - "traefik.http.services.teleuploader.loadbalancer.server.port=4000"

            networks:
              app-shared-net:
@@ -248,7 +254,7 @@ jobs:
            STORAGE_CHANNEL_ID=${{ secrets.STORAGE_CHANNEL_ID }}
            BASE_URL=${{ secrets.BASE_URL }}
            DATABASE_URL=${{ secrets.DATABASE_URL }}
-            PORT=3000
+            PORT=4000
            EOF

            # Pull latest docker image
@@ -1,5 +1,11 @@
 # S3-Compatible TeleUploader Implementation Plan

+> ⚠️ **LEGACY** — Dokumen historis (2026-07-06). Port & infrastruktur sudah berubah:
+> produksi kini berjalan di port `4000` (Nix + systemd + Caddy, domain
+> `upload.asepharyana.my.id`), database via PgBouncer pool `100.121.180.82:6432`
+> (bukan 5432/localhost). Contoh kode di bawah memakai `localhost:4000` untuk dev.
+
+
 > **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.

 **Goal:** Transform TeleUploader into an S3-compatible storage server (Telegram-backed) with a web file manager UI.
@@ -2675,7 +2681,7 @@ describe('S3 Bucket Operations', () => {
    process.env.S3_DEFAULT_REGION = 'us-east-1';
    process.env.BOT_TOKEN = '123456:ABC-DEF';
    process.env.STORAGE_CHANNEL_ID = '-1001234567890';
-    process.env.BASE_URL = 'http://localhost:3000';
+    process.env.BASE_URL = 'http://localhost:4000';
    process.env.DATABASE_URL = 'postgresql://localhost/test';
  });

@@ -2684,7 +2690,7 @@ describe('S3 Bucket Operations', () => {
  });

  it('should return 403 for unauthorized requests', async () => {
-    const req = new Request('http://localhost:3000/', {
+    const req = new Request('http://localhost:4000/', {
      method: 'GET',
      headers: { authorization: 'Invalid' },
    });
@@ -2849,7 +2855,7 @@ describe('Web API v1', () => {
    mockDbExecute.mockClear();
    process.env.BOT_TOKEN = '123456:ABC-DEF';
    process.env.STORAGE_CHANNEL_ID = '-1001234567890';
-    process.env.BASE_URL = 'http://localhost:3000';
+    process.env.BASE_URL = 'http://localhost:4000';
    process.env.DATABASE_URL = 'postgresql://localhost/test';
  });

@@ -2858,7 +2864,7 @@ describe('Web API v1', () => {
  });

  it('should list buckets via GET /api/v1/buckets', async () => {
-    const req = new Request('http://localhost:3000/api/v1/buckets');
+    const req = new Request('http://localhost:4000/api/v1/buckets');
    const res = await handleWebApiV1(req);
    expect(res.status).toBe(200);
    const data = await res.json();
@@ -2867,7 +2873,7 @@ describe('Web API v1', () => {
  });

  it('should return 404 for unknown API path', async () => {
-    const req = new Request('http://localhost:3000/api/v1/unknown');
+    const req = new Request('http://localhost:4000/api/v1/unknown');
    const res = await handleWebApiV1(req);
    expect(res.status).toBe(404);
    const data = await res.json();
@@ -2875,7 +2881,7 @@ describe('Web API v1', () => {
  });

  it('should return bucket object listing', async () => {
-    const req = new Request('http://localhost:3000/api/v1/buckets/test-bucket/objects?prefix=');
+    const req = new Request('http://localhost:4000/api/v1/buckets/test-bucket/objects?prefix=');
    const res = await handleWebApiV1(req);
    // Should return 200 even with empty results
    expect(res.status).toBe(200);
@@ -2885,7 +2891,7 @@ describe('Web API v1', () => {
  });

  it('should reject invalid bucket name on create', async () => {
-    const req = new Request('http://localhost:3000/api/v1/buckets', {
+    const req = new Request('http://localhost:4000/api/v1/buckets', {
      method: 'POST',
      headers: { 'content-type': 'application/json' },
      body: JSON.stringify({ name: 'INVALID_NAME!' }),
@@ -1,5 +1,7 @@
 # Gitea CI/CD Migration Implementation Plan

+> Catatan (2026-08-02): Produksi sekarang port 4000, deploy Nix+systemd di orangevps, Caddy reverse proxy upload.asepharyana.my.id, DB via pgbouncer pool imrnes 100.121.180.82:6432. Docker/Traefik/Gitea-CI legacy.
+
 > **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.

 **Goal:** Move `origin` from GitLab to `git.imrnes.team:MythEclipse/TeleUploader` and add Gitea Actions deployment on push to `main` using the existing VPS deploy path.
@@ -1,5 +1,7 @@
 # S3 Compatibility Completion Implementation Plan

+> Catatan (2026-08-02): Produksi sekarang port 4000, deploy Nix+systemd di orangevps, Caddy reverse proxy upload.asepharyana.my.id, DB via pgbouncer pool imrnes 100.121.180.82:6432. Docker/Traefik/Gitea-CI legacy.
+
 > **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.

 **Goal:** Finish TeleUploader S3 compatibility gaps: strict presigned GET, byte ranges, complete multipart GetObject streaming, strict AWS SDK multipart investigation/fix, and warning-free lint.
@@ -0,0 +1,950 @@
+# DDD & Clean Architecture Restructure Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Restructure TeleUploader from flat architecture to DDD/Clean Architecture with repository abstraction, controller/use-case separation, and full JSDoc documentation.
+
+**Architecture:** 5-layer DDD — domain (entities + ports), application (use cases + DTOs), infrastructure (persistence + telegram + cache), interfaces (HTTP controllers + routes + middleware + bot + S3 protocol), and shared/config foundation.
+
+**Tech Stack:** Bun + TypeScript + Drizzle ORM + Telegraf
+
+## Global Constraints
+
+- Zero behavioral changes — only move/restructure code, never alter logic
+- Old source files remain until Phase 8 (cleanup), so existing tests keep passing
+- JSDoc on every exported function, interface, type, and class (English)
+- All new imports use relative paths within new structure
+- `config/` and `shared/` have zero dependencies on other new layers
+- Domain `ports/` interfaces are implemented by `infrastructure/` repositories
+- Use cases constructed via factory functions accepting repository interfaces (no DI framework)
+- Controller = HTTP parsing + use case call + response formatting only; no business logic
+- Domain entities reuse Drizzle types (no pure domain models)
+- `bun test test/<file>` must pass at every phase (old files remain)
+
+---
+
+### Phase 1: Foundation Layer — Config + Shared Utilities
+
+#### Task 1: Create config/index.ts
+
+**Files:**
+- Create: `src/config/index.ts`
+
+**Interfaces:**
+- Produces: `AppConfig` type, `config: AppConfig` singleton
+
+- [ ] **Create `src/config/index.ts`** — Move content from `src/env.ts`. Same `AppConfig` interface, same `config` export. Add JSDoc to `AppConfig` interface (document every property), the `config` export, `parseNumber`, `parseTokens`, `parseDomains`, `maskSecret`, `maskDatabaseUrl`.
+
+- [ ] **Run tests to verify nothing broken**
+
+```bash
+bun test test/env.test.ts
+```
+Expected: PASS
+
+- [ ] **Create `src/config/__tests__/env.test.ts`** — Mirror of `test/env.test.ts` but imports from `../../config/index.ts`
+
+- [ ] **Run both env tests to verify**
+
+```bash
+bun test test/env.test.ts
+bun test src/config/__tests__/env.test.ts
+```
+Expected: Both PASS
+
+- [ ] **Commit**
+
+```bash
+git add src/config/
+git commit -m "feat: create config layer with JSDoc"
+```
+
+#### Task 2: Create shared/ errors and logger
+
+**Files:**
+- Create: `src/shared/errors/index.ts`
+- Create: `src/shared/logger/index.ts`
+
+**Interfaces:**
+- Produces: `DomainError`, `FileNotFoundError`, `BucketNotFoundError`, `FileTooLargeError`, `DuplicateFileError`, `AuthenticationError`, `ValidationError`, `logger` singleton, type `Logger`
+
+- [ ] **Create `src/shared/errors/index.ts`** — Export all error classes from spec Section 11. Add JSDoc for each class.
+
+- [ ] **Create `src/shared/logger/index.ts`** — Move content from `src/utils/logger.ts`. Same implementation. Add JSDoc.
+
+- [ ] **Quick compile check**
+
+```bash
+bun build src/config/index.ts --target=bun --outfile=/dev/null 2>&1 | head -5
+bun build src/shared/errors/index.ts --target=bun --outfile=/dev/null 2>&1 | head -5
+```
+Expected: No errors
+
+- [ ] **Commit**
+
+```bash
+git add src/shared/errors/ src/shared/logger/
+git commit -m "feat: create shared errors and logger layer"
+```
+
+#### Task 3: Create shared/ metrics
+
+**Files:**
+- Create: `src/shared/metrics/index.ts`
+
+**Interfaces:**
+- Produces: `metricsCollector`, `MetricsCollector`, `getSnapshot()`
+
+- [ ] **Create `src/shared/metrics/index.ts`** — Move content from `src/utils/metrics.ts`. Same implementation. Add JSDoc to class, all methods, and `getSnapshot()` return type.
+
+- [ ] **Compile check**
+
+```bash
+bun build src/shared/metrics/index.ts --target=bun --outfile=/dev/null 2>&1 | head -5
+```
+Expected: No errors
+
+- [ ] **Commit**
+
+```bash
+git add src/shared/metrics/
+git commit -m "feat: create shared metrics layer"
+```
+
+#### Task 4: Create shared/utils (file, ip, retry, zip)
+
+**Files:**
+- Create: `src/shared/utils/file.ts`
+- Create: `src/shared/utils/ip.ts`
+- Create: `src/shared/utils/retry.ts`
+- Create: `src/shared/utils/zip.ts`
+
+**Interfaces:**
+- Produces: `getErrorMessage`, `cleanupTempFile`, `getFileType`, `checkFileSize`, `ensureExtension`, `extractFileName`, `extractMimeType`, `computeHash`, `extractFileFromMessage`, `detectFileType`, `getFileSizeLimit`, `formatCreatedAt`, `buildUploadResponse`, `extractClientIp`, `withRetry`, `withTimeout`, `withFallback`, `createZip`, `extractZipEntry`, `locateZipEntry`
+
+- [ ] **Create `src/shared/utils/file.ts`** — Move all exports from `src/utils/file.ts`. Add JSDoc to every export. Keep all logic identical.
+
+- [ ] **Create `src/shared/utils/ip.ts`** — Move `extractClientIp` from `src/utils/ip.ts`. Add JSDoc.
+
+- [ ] **Create `src/shared/utils/retry.ts`** — Move all exports from `src/utils/retry.ts`. Add JSDoc.
+
+- [ ] **Create `src/shared/utils/zip.ts`** — Move all exports from `src/utils/zip.ts`. Add JSDoc.
+
+- [ ] **Run existing tests to verify**
+
+```bash
+bun test test/rateLimit.test.ts
+bun test test/file.test.ts
+bun test test/zip.test.ts
+```
+Expected: PASS
+
+- [ ] **Commit**
+
+```bash
+git add src/shared/utils/
+git commit -m "feat: create shared utilities layer with JSDoc"
+```
+
+---
+
+### Phase 2: Domain Layer — Entities + Ports
+
+#### Task 5: Create domain/entities (File, Bucket, FilePart, Multipart)
+
+**Files:**
+- Create: `src/domain/entities/file.ts`
+- Create: `src/domain/entities/bucket.ts`
+- Create: `src/domain/entities/file-part.ts`
+- Create: `src/domain/entities/multipart.ts`
+
+**Interfaces:**
+- Produces: `File`, `NewFile`, `FilePart`, `NewFilePart`, `Bucket`, `MultipartUpload`, `MultipartPart` types
+
+- [ ] **Create `src/domain/entities/file.ts`** — Re-export `File` and `NewFile` types from Drizzle schema. Add domain JSDoc.
+
+```typescript
+// Re-export Drizzle types as domain entities
+export type { File, NewFile } from '../../infrastructure/persistence/drizzle/schema';
+```
+
+Wait — this creates a circular dependency! Domain shouldn't import from infrastructure. Instead, define standalone interfaces:
+
+```typescript
+/**
+ * Core domain entity representing a file stored in Telegram.
+ * Contains both Telegram metadata and optional S3-compatible fields.
+ */
+export interface File {
+  id: string;
+  publicId: string;
+  telegramFileId: string;
+  telegramFileUniqueId: string;
+  storageChatId: number;
+  storageMessageId: number;
+  fileName: string;
+  mimeType: string;
+  sizeBytes: number;
+  fileType: string;
+  uploaderId: number;
+  fileHash: string | null;
+  archiveTelegramFileId: string | null;
+  archiveStorageMessageId: number | null;
+  archiveFileName: string | null;
+  archiveEntryName: string | null;
+  archiveMimeType: string | null;
+  archiveSizeBytes: number | null;
+  bucketId: string | null;
+  s3Key: string | null;
+  storageBackend: string | null;
+  isDeleted: boolean | null;
+  multipartUploadId: string | null;
+  partCount: number | null;
+  createdAt: Date;
+  updatedAt: Date;
+}
+
+export type NewFile = Omit<File, 'id' | 'createdAt' | 'updatedAt'>;
+```
+
+- [ ] **Create `src/domain/entities/bucket.ts`** — Standalone Bucket interface.
+
+- [ ] **Create `src/domain/entities/file-part.ts`** — Standalone FilePart + NewFilePart types with `CompressionAlgorithm`.
+
+- [ ] **Create `src/domain/entities/multipart.ts`** — Standalone MultipartUpload, MultipartPart types.
+
+- [ ] **Compile check**
+
+```bash
+bun build src/domain/entities/file.ts --target=bun --outfile=/dev/null 2>&1 | head -5
+```
+Expected: No errors
+
+- [ ] **Commit**
+
+```bash
+git add src/domain/entities/
+git commit -m "feat: create domain entities with JSDoc"
+```
+
+#### Task 6: Create domain/ports (repository interfaces)
+
+**Files:**
+- Create: `src/domain/ports/file-repository.ts`
+- Create: `src/domain/ports/bucket-repository.ts`
+- Create: `src/domain/ports/file-part-repository.ts`
+- Create: `src/domain/ports/multipart-repository.ts`
+
+**Interfaces:**
+- Produces: `IFileRepository`, `IBucketRepository`, `IFilePartRepository`, `IMultipartRepository`, `ITelegramService`, `S3FileRecord`, `CompressionAlgorithm`
+
+- [ ] **Create `src/domain/ports/file-repository.ts`** — Define interface for all file operations currently in `db/files.ts` and `db/files-ext.ts`.
+
+```typescript
+import type { File, NewFile } from '../entities/file';
+
+export interface S3FileRecord extends File {
+  bucketId: string;
+  s3Key: string;
+}
+
+export interface IFileRepository {
+  findByHash(hash: string): Promise<File | null>;
+  findByPublicId(publicId: string): Promise<File | null>;
+  findByUniqueId(telegramFileUniqueId: string): Promise<File | null>;
+  findByBucketAndKey(bucketId: string, s3Key: string): Promise<File | null>;
+  create(file: NewFile): Promise<File>;
+  listByPrefix(
+    bucketId: string,
+    prefix: string,
+    delimiter: string | null,
+    maxKeys: number,
+    startAfter: string | null,
+  ): Promise<{ objects: S3FileRecord[]; prefixes: string[] }>;
+  softDelete(bucketId: string, s3Key: string): Promise<boolean>;
+  softDeleteBatch(bucketId: string, keys: string[]): Promise<number>;
+  countByBucket(bucketId: string): Promise<number>;
+  findOrphansByBucket(bucketId: string): Promise<File[]>;
+}
+```
+
+- [ ] **Create `src/domain/ports/bucket-repository.ts`** — Interface for bucket CRUD.
+
+- [ ] **Create `src/domain/ports/file-part-repository.ts`** — Interface for file parts operations.
+
+- [ ] **Create `src/domain/ports/multipart-repository.ts`** — Interface for multipart upload operations.
+
+- [ ] **Create `src/domain/ports/telegram-service.ts`** — Interface for Telegram operations.
+
+```typescript
+/** Result of forwarding a file to Telegram storage */
+export interface ForwardResult {
+  telegramFileId: string;
+  telegramFileUniqueId: string;
+  storageMessageId: number;
+}
+
+/** File information returned by Telegram's getFile API */
+export interface TelegramFileInfo {
+  file_size: number;
+  mime_type: string;
+  file_path: string;
+  bot_token: string;
+}
+
+/** Abstraction over Telegram bot API operations */
+export interface ITelegramService {
+  forwardToStorage(fileChunk: unknown, fileName: string, fileType: string): Promise<ForwardResult>;
+  getFileInfo(telegramFileId: string): Promise<TelegramFileInfo>;
+  enqueueUpload<T>(task: () => Promise<T>): Promise<T>;
+}
+```
+
+- [ ] **Compile check**
+
+```bash
+bun build src/domain/ports/file-repository.ts --target=bun --outfile=/dev/null 2>&1
+bun build src/domain/ports/telegram-service.ts --target=bun --outfile=/dev/null 2>&1
+```
+Expected: No errors (domain has no infrastructure dependencies)
+
+- [ ] **Commit**
+
+```bash
+git add src/domain/ports/
+git commit -m "feat: create domain port interfaces with JSDoc"
+```
+
+---
+
+### Phase 3: Infrastructure Layer — Persistence, Telegram, Cache
+
+#### Task 7: Create infrastructure/persistence/drizzle (DB init, schema, migrate)
+
+**Files:**
+- Create: `src/infrastructure/persistence/drizzle/index.ts`
+- Create: `src/infrastructure/persistence/drizzle/schema.ts`
+- Create: `src/infrastructure/persistence/drizzle/migrate.ts`
+
+**Interfaces:**
+- Consumes: domain entities (for type alignment)
+- Produces: `db` client, `files`, `fileParts` table definitions, `runMigration()`, Drizzle schema types
+
+- [ ] **Create `src/infrastructure/persistence/drizzle/index.ts`** — Move content from `src/db/index.ts`. Same implementation. Add JSDoc to exports.
+
+- [ ] **Create `src/infrastructure/persistence/drizzle/schema.ts`** — Move content from `src/db/schema.ts`. Same implementation. Add JSDoc to table definitions and exported types.
+
+- [ ] **Create `src/infrastructure/persistence/drizzle/migrate.ts`** — Move content from `src/db/migrate.ts`. Same implementation. Add JSDoc.
+
+- [ ] **Compile check**
+
+```bash
+bun build src/infrastructure/persistence/drizzle/index.ts --target=bun --outfile=/dev/null 2>&1 | head -10
+```
+Expected: No errors
+
+- [ ] **Commit**
+
+```bash
+git add src/infrastructure/persistence/drizzle/
+git commit -m "feat: create persistence drizzle layer"
+```
+
+#### Task 8: Create infrastructure/persistence/repositories (implement ports)
+
+**Files:**
+- Create: `src/infrastructure/persistence/repositories/file-repository.ts`
+- Create: `src/infrastructure/persistence/repositories/bucket-repository.ts`
+- Create: `src/infrastructure/persistence/repositories/file-part-repository.ts`
+- Create: `src/infrastructure/persistence/repositories/multipart-repository.ts`
+
+**Interfaces:**
+- Consumes: `IFileRepository`, `IBucketRepository`, `IFilePartRepository`, `IMultipartRepository` from domain/ports
+- Produces: Concrete repository classes implementing each interface
+
+- [ ] **Create `src/infrastructure/persistence/repositories/file-repository.ts`** — Implement `IFileRepository` using Drizzle. Extract logic from `src/db/files.ts` and `src/db/files-ext.ts`. Methods delegate to Drizzle queries (same SQL as original).
+
+```typescript
+import { eq, and, sql } from 'drizzle-orm';
+import { db, files as fileSchema } from '../drizzle/index';
+import type { File, NewFile } from '../../../domain/entities/file';
+import type { IFileRepository, S3FileRecord } from '../../../domain/ports/file-repository';
+
+export class DrizzleFileRepository implements IFileRepository {
+  async findByHash(hash: string): Promise<File | null> {
+    const result = await db.select().from(fileSchema).where(eq(fileSchema.fileHash, hash)).limit(1);
+    return result[0] || null;
+  }
+  // ... all methods from original files.ts + files-ext.ts
+}
+```
+
+- [ ] **Create `src/infrastructure/persistence/repositories/bucket-repository.ts`** — Implement `IBucketRepository` from `src/db/buckets.ts`.
+
+- [ ] **Create `src/infrastructure/persistence/repositories/file-part-repository.ts`** — Implement `IFilePartRepository` from `src/db/file-parts.ts`.
+
+- [ ] **Create `src/infrastructure/persistence/repositories/multipart-repository.ts`** — Implement `IMultipartRepository` from `src/db/multipart.ts`.
+
+- [ ] **Compile check**
+
+```bash
+bun build src/infrastructure/persistence/repositories/file-repository.ts --target=bun --outfile=/dev/null 2>&1 | head -10
+```
+Expected: No errors
+
+- [ ] **Commit**
+
+```bash
+git add src/infrastructure/persistence/repositories/
+git commit -m "feat: create Drizzle repository implementations"
+```
+
+#### Task 9: Create infrastructure/telegram (bot-pool, queue, batcher, chunked-storage)
+
+**Files:**
+- Create: `src/infrastructure/telegram/types.ts`
+- Create: `src/infrastructure/telegram/bot-pool.ts`
+- Create: `src/infrastructure/telegram/upload-queue.ts`
+- Create: `src/infrastructure/telegram/upload-batcher.ts`
+- Create: `src/infrastructure/telegram/chunked-storage.ts`
+
+**Interfaces:**
+- Consumes: `ITelegramService`, `IFilePartRepository`, `IFileRepository` from domain/ports
+- Produces: `DrizzleFileRepository`, `BotPool`, etc.
+
+- [ ] **Create `src/infrastructure/telegram/types.ts`** — Extract Telegram-specific types from `src/utils/telegram.ts` (no longer inline).
+
+- [ ] **Create `src/infrastructure/telegram/bot-pool.ts`** — Move multi-bot pool + retry logic from `src/utils/telegram.ts`. Implement `ITelegramService` interface. Add JSDoc.
+
+- [ ] **Create `src/infrastructure/telegram/upload-queue.ts`** — Move P-Queue wrapper from `src/utils/telegramQueue.ts`. Add JSDoc.
+
+- [ ] **Create `src/infrastructure/telegram/upload-batcher.ts`** — Move batch upload logic from `src/utils/uploadBatcher.ts`. Add JSDoc. Accept repository interface instead of importing `db` directly.
+
+- [ ] **Create `src/infrastructure/telegram/chunked-storage.ts`** — Move chunked storage logic from `src/utils/chunked-storage.ts`. Accept repository interfaces. Add JSDoc.
+
+- [ ] **Compile check**
+
+```bash
+bun build src/infrastructure/telegram/bot-pool.ts --target=bun --outfile=/dev/null 2>&1 | head -10
+bun build src/infrastructure/telegram/upload-batcher.ts --target=bun --outfile=/dev/null 2>&1 | head -10
+```
+Expected: No errors
+
+- [ ] **Commit**
+
+```bash
+git add src/infrastructure/telegram/
+git commit -m "feat: create infrastructure telegram layer"
+```
+
+#### Task 10: Create infrastructure/cache
+
+**Files:**
+- Create: `src/infrastructure/cache/index.ts`
+
+**Interfaces:**
+- Produces: `Cache<T>`, `fileInfoCache` singleton
+
+- [ ] **Create `src/infrastructure/cache/index.ts`** — Move generic TTL cache from `src/utils/cache.ts`. Add JSDoc. Same implementation.
+
+- [ ] **Compile check**
+
+```bash
+bun build src/infrastructure/cache/index.ts --target=bun --outfile=/dev/null 2>&1 | head -5
+```
+Expected: No errors
+
+- [ ] **Commit**
+
+```bash
+git add src/infrastructure/cache/
+git commit -m "feat: create infrastructure cache layer"
+```
+
+---
+
+### Phase 4: Application Layer — DTOs + Use Cases
+
+#### Task 11: Create application/dto
+
+**Files:**
+- Create: `src/application/dto/upload.ts`
+- Create: `src/application/dto/file.ts`
+- Create: `src/application/dto/bucket.ts`
+- Create: `src/application/dto/s3.ts`
+- Create: `src/application/dto/auth.ts`
+
+**Interfaces:**
+- Produces: `UploadInput`, `UploadOutput`, `FileInfoResponse`, `BucketResponse`, `S3ObjectResponse`, `AuthSession`, etc.
+
+- [ ] **Create `src/application/dto/upload.ts`** — Define upload request/response DTOs.
+
+```typescript
+/** Input for the upload file use case */
+export interface UploadInput {
+  tempPath: string;
+  fileHash: string;
+  fileName: string;
+  mimeType: string;
+  fileType: string;
+  sizeBytes: number;
+  uploaderId?: number;
+  bucketId?: string | null;
+  s3Key?: string | null;
+}
+
+/** Output from the upload file use case */
+export interface UploadOutput {
+  publicId: string;
+  fileName: string;
+  mimeType: string;
+  sizeBytes: number;
+  fileType: string;
+  createdAt: Date;
+  downloadUrl: string;
+}
+```
+
+- [ ] **Create `src/application/dto/file.ts`** — File info response DTOs.
+
+- [ ] **Create `src/application/dto/bucket.ts`** — Bucket CRUD DTOs.
+
+- [ ] **Create `src/application/dto/s3.ts`** — S3 operation DTOs (list, copy, multipart).
+
+- [ ] **Create `src/application/dto/auth.ts`** — Auth request/response DTOs (login input, session info).
+
+- [ ] **Compile check**
+
+```bash
+bun build src/application/dto/upload.ts --target=bun --outfile=/dev/null 2>&1 | head -5
+```
+Expected: No errors
+
+- [ ] **Commit**
+
+```bash
+git add src/application/dto/
+git commit -m "feat: create application DTOs"
+```
+
+#### Task 12: Create application/use-cases (upload, get-file, auth)
+
+**Files:**
+- Create: `src/application/use-cases/upload-file.ts`
+- Create: `src/application/use-cases/get-file.ts`
+- Create: `src/application/use-cases/authenticate.ts`
+
+**Interfaces:**
+- Consumes: Repository interfaces from domain/ports, DTOs from application/dto
+- Produces: Factory functions returning use case closures
+
+- [ ] **Create `src/application/use-cases/upload-file.ts`** — Extract upload business logic from `src/routes/upload.ts` + `src/utils/chunked-storage.ts`. Factory function pattern:
+
+```typescript
+import { nanoid } from 'nanoid';
+import type { IFileRepository } from '../../domain/ports/file-repository';
+import type { IFilePartRepository } from '../../domain/ports/file-part-repository';
+import type { ITelegramService } from '../../domain/ports/telegram-service';
+import type { AppConfig } from '../../config/index';
+import type { UploadInput, UploadOutput } from '../dto/upload';
+
+export interface UploadFileUseCaseDeps {
+  fileRepo: IFileRepository;
+  filePartRepo: IFilePartRepository;
+  telegramService: ITelegramService;
+  config: AppConfig;
+}
+
+export function createUploadFileUseCase(deps: UploadFileUseCaseDeps) {
+  return async (input: UploadInput): Promise<UploadOutput> => {
+    // 1. Check dedup (fileRepo.findByHash)
+    // 2. Check file size limits
+    // 3. Determine storage strategy: chunked vs single vs batch
+    // 4. Store via telegramService
+    // 5. Insert DB record via fileRepo
+    // 6. Build and return UploadOutput
+  };
+}
+```
+
+- [ ] **Create `src/application/use-cases/get-file.ts`** — Extract file redirect/stream logic from `src/routes/files.ts`.
+
+- [ ] **Create `src/application/use-cases/authenticate.ts`** — Extract login/logout/session logic from `src/routes/auth.ts` + `src/utils/auth.ts`.
+
+- [ ] **Compile check**
+
+```bash
+bun build src/application/use-cases/upload-file.ts --target=bun --outfile=/dev/null 2>&1 | head -15
+```
+Expected: No errors (may have non-functional code until controllers wired up — skip if not compile-ready)
+
+- [ ] **Commit**
+
+```bash
+git add src/application/use-cases/authenticate.ts src/application/use-cases/upload-file.ts src/application/use-cases/get-file.ts
+git commit -m "feat: create application use cases (upload, get-file, auth)"
+```
+
+#### Task 13: Create application/use-cases (bucket, s3-object, multipart)
+
+**Files:**
+- Create: `src/application/use-cases/manage-bucket.ts`
+- Create: `src/application/use-cases/s3-object.ts`
+- Create: `src/application/use-cases/multipart-upload.ts`
+
+**Interfaces:**
+- Consumes: Repository interfaces from domain/ports, DTOs from application/dto
+- Produces: Factory functions for bucket CRUD, S3 object ops, multipart upload
+
+- [ ] **Create `src/application/use-cases/manage-bucket.ts`** — Extract bucket CRUD logic from `src/routes/web-api.ts` + `src/routes/s3.ts`.
+
+- [ ] **Create `src/application/use-cases/s3-object.ts`** — Extract S3 get/put/delete/copy logic from `src/routes/s3.ts`. This is the biggest extraction.
+
+- [ ] **Create `src/application/use-cases/multipart-upload.ts`** — Extract S3 multipart upload logic from `src/routes/s3.ts`.
+
+- [ ] **Commit**
+
+```bash
+git add src/application/use-cases/manage-bucket.ts src/application/use-cases/s3-object.ts src/application/use-cases/multipart-upload.ts
+git commit -m "feat: create application use cases (bucket, s3-object, multipart)"
+```
+
+---
+
+### Phase 5: Interfaces Layer — Controllers, Middleware, Routes, S3, Bot
+
+#### Task 14: Create interfaces/s3 protocol files
+
+**Files:**
+- Create: `src/interfaces/s3/auth.ts`
+- Create: `src/interfaces/s3/headers.ts`
+- Create: `src/interfaces/s3/object-stream.ts`
+- Create: `src/interfaces/s3/range.ts`
+- Create: `src/interfaces/s3/virtual-host.ts`
+- Create: `src/interfaces/s3/xml.ts`
+
+**Interfaces:**
+- Produces: SigV4 auth, S3 headers, object streaming, range parsing, virtual-host extraction, XML builders — all same as `src/utils/s3/*`
+
+- [ ] **Create each file** — Move content from `src/utils/s3/auth.ts`, `src/utils/s3/headers.ts`, etc. Add JSDoc to each exported function. Same implementations.
+
+- [ ] **Compile check**
+
+```bash
+bun build src/interfaces/s3/auth.ts --target=bun --outfile=/dev/null 2>&1 | head -5
+```
+Expected: No errors
+
+- [ ] **Commit**
+
+```bash
+git add src/interfaces/s3/
+git commit -m "feat: create interfaces/s3 protocol layer"
+```
+
+#### Task 15: Create HTTP middleware (auth, rate-limit)
+
+**Files:**
+- Create: `src/interfaces/http/middleware/auth.ts`
+- Create: `src/interfaces/http/middleware/rate-limit.ts`
+
+**Interfaces:**
+- Produces: `requireAuth`, `getAuthSession`, `withRateLimit`, `checkRateLimit`, `cleanupRateLimitCache`
+
+- [ ] **Create `src/interfaces/http/middleware/auth.ts`** — Move auth middleware from `src/utils/auth.ts`. Update imports to use `config` from `../../config/index`. Add JSDoc.
+
+- [ ] **Create `src/interfaces/http/middleware/rate-limit.ts`** — Move rate limiter from `src/utils/rateLimit.ts`. Add JSDoc.
+
+- [ ] **Compile check**
+
+```bash
+bun build src/interfaces/http/middleware/auth.ts --target=bun --outfile=/dev/null 2>&1 | head -10
+```
+Expected: No errors
+
+- [ ] **Commit**
+
+```bash
+git add src/interfaces/http/middleware/
+git commit -m "feat: create HTTP middleware layer"
+```
+
+#### Task 16: Create HTTP controllers
+
+**Files:**
+- Create: `src/interfaces/http/controllers/upload-controller.ts`
+- Create: `src/interfaces/http/controllers/file-controller.ts`
+- Create: `src/interfaces/http/controllers/auth-controller.ts`
+- Create: `src/interfaces/http/controllers/home-controller.ts`
+- Create: `src/interfaces/http/controllers/health-controller.ts`
+- Create: `src/interfaces/http/controllers/s3-controller.ts`
+- Create: `src/interfaces/http/controllers/web-api-controller.ts`
+
+**Interfaces:**
+- Consumes: Use case factory functions from application layer
+- Produces: HTTP handler functions compatible with `Bun.serve()` routes
+
+- [ ] **Create `src/interfaces/http/controllers/upload-controller.ts`** — Extract upload HTTP handling from `src/routes/upload.ts`. Controller parses request, calls use case, formats response:
+
+```typescript
+import { createUploadFileUseCase } from '../../../application/use-cases/upload-file';
+// ... setup use case with dependencies
+// ... handler functions for multipart and JSON upload paths
+```
+
+- [ ] **Create `src/interfaces/http/controllers/file-controller.ts`** — Extract from `src/routes/files.ts`. Controller handles params, calls getFile use case, handles redirect/stream.
+
+- [ ] **Create `src/interfaces/http/controllers/auth-controller.ts`** — Extract from `src/routes/auth.ts`.
+
+- [ ] **Create `src/interfaces/http/controllers/home-controller.ts`** — Move from `src/routes/home.ts`.
+
+- [ ] **Create `src/interfaces/http/controllers/health-controller.ts`** — Move from `src/routes/health.ts`.
+
+- [ ] **Create `src/interfaces/http/controllers/s3-controller.ts`** — Extract S3 dispatching from `src/routes/s3.ts`. This is the largest extraction — split into clear sections (bucket ops, object ops, multipart ops). The 1179-line file becomes a focused controller that delegates to use cases.
+
+- [ ] **Create `src/interfaces/http/controllers/web-api-controller.ts`** — Extract from `src/routes/web-api.ts`.
+
+- [ ] **Move `src/home.html` to `src/interfaces/http/controllers/home.html`** — Update reference in home-controller.
+
+- [ ] **Commit**
+
+```bash
+git add src/interfaces/http/controllers/
+git commit -m "feat: create HTTP controller layer"
+```
+
+#### Task 17: Create HTTP route definitions
+
+**Files:**
+- Create: `src/interfaces/http/routes/index.ts`
+
+**Interfaces:**
+- Consumes: All controller handler functions
+- Produces: Route table for `Bun.serve()`
+
+- [ ] **Create `src/interfaces/http/routes/index.ts`** — Define route table matching current `src/index.ts` routes. Each route maps to its controller handler. Add JSDoc.
+
+```typescript
+import type { Server } from 'bun';
+import { handleUpload } from '../controllers/upload-controller';
+import { handleFileRedirect, handleFileInfo } from '../controllers/file-controller';
+// ... other imports
+
+/** Defines all HTTP routes for the application */
+export const routes: Server['routes'] = {
+  '/api/upload': { POST: handleUpload },
+  '/f/:public_id': { GET: handleFileRedirect },
+  '/file/:public_id/info': { GET: handleFileInfo },
+  '/health': { GET: handleHealth },
+  '/docs': { GET: handleSwaggerHtml },
+  '/swagger.json': { GET: handleSwaggerJson },
+  // ... etc
+};
+```
+
+- [ ] **Commit**
+
+```bash
+git add src/interfaces/http/routes/
+git commit -m "feat: create HTTP route definitions"
+```
+
+#### Task 18: Create interfaces/bot
+
+**Files:**
+- Create: `src/interfaces/bot/handler.ts`
+
+**Interfaces:**
+- Consumes: `ITelegramService`, use cases
+- Produces: `startBot()` function for Telegram bot lifecycle
+
+- [ ] **Create `src/interfaces/bot/handler.ts`** — Move bot handler logic from `src/bot.ts`. Add JSDoc. Update imports to use new structure.
+
+- [ ] **Commit**
+
+```bash
+git add src/interfaces/bot/
+git commit -m "feat: create bot interface layer"
+```
+
+---
+
+### Phase 6: Entry Point Rewire
+
+#### Task 19: Rewrite src/index.ts
+
+**Files:**
+- Modify: `src/index.ts`
+- Modify (delete): `src/bot.ts`
+
+- [ ] **Rewrite `src/index.ts`** — Update to import from new structure. Server bootstrap, S3 detection, route table from `interfaces/http/routes/index`, lifecycle management.
+
+```typescript
+import { serve } from 'bun';
+import { config } from './config/index';
+import { startBot } from './interfaces/bot/handler';
+import { routes } from './interfaces/http/routes/index';
+import { isS3Request } from './interfaces/s3/auth';
+import { handleS3Request } from './interfaces/http/controllers/s3-controller';
+import { extractS3BucketFromHost } from './interfaces/s3/virtual-host';
+import { fileInfoCache } from './infrastructure/cache/index';
+import { cleanupRateLimitCache } from './interfaces/http/middleware/rate-limit';
+import { logger } from './shared/logger/index';
+import { metricsCollector } from './shared/metrics/index';
+```
+
+- [ ] **Remove `src/bot.ts`** (replaced by `src/interfaces/bot/handler.ts`)
+
+- [ ] **Run full test suite**
+
+```bash
+bun test
+```
+Expected: All tests PASS (old src files still exist for backward compat)
+
+- [ ] **Commit**
+
+```bash
+git add src/index.ts src/interfaces/bot/handler.ts
+git rm src/bot.ts
+git commit -m "feat: rewire entry point to new architecture"
+```
+
+---
+
+### Phase 7: Test Restructure
+
+#### Task 20: Create mirror test structure
+
+**Files:**
+- Create: `test/unit/domain/entities/` (entity type tests)
+- Create: `test/unit/application/use-cases/` (use case tests)
+- Create: `test/unit/shared/` (util tests)
+- Create: `test/integration/interfaces/http/` (route tests)
+- Create: `test/integration/infrastructure/` (repo tests)
+
+- [ ] **Create test folder structure mirroring src/**
+
+```bash
+mkdir -p test/unit/domain/entities \
+  test/unit/application/use-cases \
+  test/unit/shared \
+  test/integration/interfaces/http \
+  test/integration/infrastructure/persistence \
+  test/integration/infrastructure/telegram
+```
+
+- [ ] **Move util tests** — Copy `test/env.test.ts` → `test/unit/config/env.test.ts`, update import path to `src/config/index`. Copy `test/file.test.ts` → `test/unit/shared/file.test.ts`, update imports. Copy `test/zip.test.ts` → `test/unit/shared/zip.test.ts`.
+
+- [ ] **Move route tests** — Copy `test/upload.test.ts` → `test/integration/interfaces/http/upload.test.ts`, update imports. Copy `test/files.test.ts` → `test/integration/interfaces/http/files.test.ts`. Copy `test/auth-routes.test.ts`, `test/health.test.ts`, `test/swagger.test.ts`.
+
+- [ ] **Move S3 tests** — Copy `test/s3-auth.test.ts` → `test/unit/interfaces/s3/auth.test.ts`. Copy `test/s3-range.test.ts`, `test/s3-operations.test.ts`, `test/s3-bucket-config.test.ts`, `test/s3-object-stream.test.ts`.
+
+- [ ] **Move infrastructure tests** — Copy `test/db.test.ts` → `test/unit/infrastructure/persistence/drizzle/schema.test.ts`. Copy `test/chunked-storage.test.ts` → `test/unit/infrastructure/telegram/chunked-storage.test.ts`. Copy `test/telegram.test.ts`, `test/telegramQueue.test.ts`.
+
+- [ ] **Keep original test files** — Do NOT delete them yet. Original tests still reference old source paths and need to keep passing for now.
+
+- [ ] **Update test runner scripts in package.json** — Add test patterns for new test locations:
+
+```json
+"test:new": "bun test test/unit/ test/integration/",
+"test:all": "bun test && bun test test/unit/ test/integration/"
+```
+
+- [ ] **Run both old and new tests**
+
+```bash
+bun test test/env.test.ts
+bun test test/unit/config/env.test.ts
+```
+Expected: Both PASS
+
+- [ ] **Commit**
+
+```bash
+git add test/unit/ test/integration/ package.json
+git commit -m "test: restructure tests to mirror new architecture"
+```
+
+---
+
+### Phase 8: Cleanup — Delete Old Files
+
+#### Task 21: Remove old source directories
+
+**Files:** Delete old source directories once new structure is verified.
+
+- [ ] **Delete old directories** (only after all tests pass with new imports)
+
+```bash
+rm -rf src/db src/routes src/utils src/env.ts src/bot.ts
+```
+
+- [ ] **Run full test suite to confirm nothing is broken**
+
+```bash
+bun test
+bun test test/unit/ test/integration/
+```
+Expected: All PASS
+
+- [ ] **Commit**
+
+```bash
+git rm -r src/db src/routes src/utils src/env.ts src/bot.ts
+git commit -m "chore: remove legacy source directories after migration"
+```
+
+#### Task 22: Final verification
+
+- [ ] **Full test suite**
+
+```bash
+bun run test:all
+```
+Expected: All PASS
+
+- [ ] **Build verification**
+
+```bash
+bun run build
+```
+Expected: dist/index.js and dist/migrate.js compile without errors
+
+- [ ] **Lint check**
+
+```bash
+bunx biome check src test/unit test/integration
+```
+Expected: No errors
+
+- [ ] **Final commit** if any fixes were needed
+
+```bash
+git add -A
+git commit -m "chore: final cleanup after architecture migration"
+```
+
+---
+
+## Spec Coverage Check
+
+| Spec Requirement | Covered In |
+|-----------------|------------|
+| New folder structure | Task 5-19 (all phases) |
+| DDD layers | Phase 2 (domain), Phase 4 (application), Phase 3 (infrastructure), Phase 5 (interfaces) |
+| Repository interfaces | Task 6 |
+| Repository implementations | Task 8 |
+| Controller/use-case separation | Task 12-13 (use cases), Task 16 (controllers) |
+| Dependency injection (factory functions) | Task 12 |
+| Telegram service interface | Task 6 (ITelegramService port) |
+| Bot moved to interfaces/bot | Task 18 |
+| S3 protocol moved to interfaces/s3 | Task 14 |
+| Config moved to config/ | Task 1 |
+| Shared utilities moved to shared/ | Task 2-4 |
+| Error classes | Task 2 |
+| JSDoc on all exports | All creation tasks |
+| Test restructure | Task 20 |
+| Zero behavior changes | No logic altered — only moved/extracted |
+| Delete old files | Task 21 |
+| Final verification | Task 22 |
@@ -0,0 +1,576 @@
+# Per-Bot Queue Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Replace global PQueue with per-bot queues (concurrency=1 per bot) to eliminate 429 collisions and improve rate-limit safety.
+
+**Architecture:** Each bot token gets its own PQueue with concurrency=1. Uploads are assigned to the least-loaded available bot via `selectBot()`. On 429, the bot is marked rate-limited and the upload retries on the next available bot. The global `upload-queue.ts` is removed; `uploadConcurrency` config is replaced by `botCount * perBotConcurrency`.
+
+**Tech Stack:** TypeScript, PQueue, Telegraf
+
+## Global Constraints
+
+- Use `Bun` runtime, not Node.js
+- Follow existing code style (Biome lint)
+- Each bot queue has concurrency=1 (no two uploads hit same bot simultaneously)
+- `selectBot()` picks bot with lowest pending queue count, skipping rate-limited bots
+- Remove `uploadConcurrency` from config; derive effective concurrency from bot count
+- Remove `upload-queue.ts` entirely
+- Remove `enqueueUpload` from `ITelegramService` interface
+
+---
+## File Structure
+
+### Files to Modify
+| File | Change |
+|------|--------|
+| `src/infrastructure/telegram/bot-pool.ts` | BotEntry array, selectBot(), per-bot queues, retry logic |
+| `src/domain/ports/telegram-service.ts` | Remove `enqueueUpload` from interface |
+| `src/env.ts` | Remove `uploadConcurrency` field |
+| `src/index.ts` | Remove upload-queue import and usage |
+| `src/utils/chunked-storage.ts` | Replace `config.uploadConcurrency` with bot count |
+
+### Files to Delete
+| File | Reason |
+|------|--------|
+| `src/infrastructure/telegram/upload-queue.ts` | Global queue replaced by per-bot queues |
+| `test/telegramQueue.test.ts` | Tests for deleted module |
+
+### Files Not Changed
+| File | Reason |
+|------|--------|
+| `test/bot.test.ts` | Only uses ITelegramService interface (via `forwardToStorage`) |
+| `src/infrastructure/telegram/chunked-storage.ts` | Uses ITelegramService interface, not BotPool directly |
+
+---
+
+### Task 1: Refresh the spec & plan files after compaction
+
+Due to context compaction, re-read the current spec and plan files to ensure accuracy before implementing.
+
+- [ ] **Step 1: Re-read the spec**
+
+Read: `docs/superpowers/specs/2026-07-29-per-bot-queue-design.md`
+
+- [ ] **Step 2: Re-read key implementation files**
+
+Read: `src/infrastructure/telegram/bot-pool.ts`, `src/env.ts`, `src/utils/chunked-storage.ts`
+
+### Task 2: Refactor ITelegramService interface
+
+Remove `enqueueUpload` from the interface — BotPool handles queueing internally now.
+
+**Files:**
+- Modify: `src/domain/ports/telegram-service.ts`
+
+- [ ] **Step 1: Remove `enqueueUpload` from interface**
+
+```typescript
+// src/domain/ports/telegram-service.ts — remove entire section:
+  /**
+   * Enqueue a task for sequential upload execution.
+   *
+   * Ensures only one Telegram upload runs at a time to avoid
+   * rate limits and resource contention.
+   *
+   * @param task - An async function performing the upload.
+   * @returns The result of the task.
+   */
+  enqueueUpload<T>(task: () => Promise<T>): Promise<T>;
+```
+
+- [ ] **Step 2: Run lint to verify**
+
+Run: `bunx biome check src/domain/ports/telegram-service.ts`
+Expected: No errors.
+
+- [ ] **Step 3: Commit**
+
+```bash
+git add src/domain/ports/telegram-service.ts
+git commit -m "refactor: remove enqueueUpload from ITelegramService
+
+Per-bot queue handles queueing internally.
+
+Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>"
+```
+
+### Task 3: Refactor BotPool with per-bot queues
+
+The core of the redesign. Replace `claimBotIndex()` round-robin with per-bot PQueue instances and `selectBot()` for least-loaded assignment.
+
+**Files:**
+- Modify: `src/infrastructure/telegram/bot-pool.ts`
+
+**Interfaces:**
+- Consumes: `ITelegramService` (no `enqueueUpload` method)
+- Produces: `botPool` singleton with per-bot queues, `selectBot()`, per-bot rate-limit tracking
+
+- [ ] **Step 1: Write test file for per-bot queue behavior**
+
+```typescript
+// test/bot-pool.test.ts
+import { beforeEach, describe, expect, it, mock, spyOn } from 'bun:test';
+
+// We'll test the BotEntry queue behavior and selectBot logic
+```
+
+- [ ] **Step 2: Implement BotEntry type and BotPool refactor**
+
+Replace the class body:
+
+```typescript
+import PQueue from 'p-queue';
+import { Telegraf } from 'telegraf';
+import type {
+  ForwardResult,
+  ITelegramService,
+  TelegramFileInfo,
+} from '../../domain/ports/telegram-service';
+import { config } from '../../env';
+import logger from '../../shared/logger/index';
+import {
+  buildSendPayload,
+  extractUploadedFile,
+  type SendMethod,
+  sendMethodMap,
+  type TelegramMessageResult,
+} from './types';
+
+const sleep = (ms: number): Promise<void> => 
+  new Promise((resolve) => setTimeout(resolve, ms));
+
+const isTransientError = (error: unknown): boolean => {
+  const str = error instanceof Error ? error.message : String(error);
+  const transientPatterns = [
+    'timeout', 'Timed out', 'etimedout', 'econnrefused', 'econnreset',
+    'ECONNREFUSED', 'ECONNRESET', 'ETIMEDOUT', '5xx', '502', '503', '504',
+    'Bad Gateway', 'Service Unavailable', 'Gateway Timeout', 'socket hang up',
+    'socket closed', 'fetch failed', 'network error', 'network timeout',
+    'API closed', 'read ECONNRESET', 'write EPIPE',
+  ];
+  return transientPatterns.some((p) => str.toLowerCase().includes(p.toLowerCase()));
+};
+
+const MAX_TRANSIENT_RETRIES = 3;
+const TELEGRAM_API_TIMEOUT_MS = 120_000;
+const PER_BOT_CONCURRENCY = 1;
+
+interface BotEntry {
+  index: number;
+  token: string;
+  instance: Telegraf;
+  queue: PQueue;
+  rateLimitedUntil: number; // 0 = not rate-limited
+}
+
+export class BotPool implements ITelegramService {
+  private readonly bots: BotEntry[] = [];
+
+  constructor() {
+    const tokens = Array.from(new Set([config.botToken, ...config.additionalBotTokens]));
+    this.bots = tokens.map((token, index) => ({
+      index,
+      token,
+      instance: new Telegraf(token),
+      queue: new PQueue({ concurrency: PER_BOT_CONCURRENCY }),
+      rateLimitedUntil: 0,
+    }));
+  }
+
+  /** Number of bots in the pool */
+  get size(): number {
+    return this.bots.length;
+  }
+
+  /**
+   * Select the bot with the fewest pending tasks that isn't rate-limited
+   * or in the skip set.
+   */
+  private selectBot(skipIndexes?: Set<number>): BotEntry | null {
+    let best: BotEntry | null = null;
+    let bestPending = Infinity;
+
+    for (const bot of this.bots) {
+      if (skipIndexes?.has(bot.index)) continue;
+      if (bot.rateLimitedUntil > Date.now()) continue;
+
+      const pending = bot.queue.pending + bot.queue.size;
+      if (pending < bestPending) {
+        bestPending = pending;
+        best = bot;
+      }
+    }
+
+    return best;
+  }
+
+  /**
+   * Execute a Telegram API action on a specific bot entry.
+   * Wraps with timeout.
+   */
+  private async executeBotAction<T>(
+    bot: BotEntry,
+    action: (instance: Telegraf, token: string) => Promise<T>,
+  ): Promise<T> {
+    return Promise.race([
+      action(bot.instance, bot.token),
+      new Promise<never>((_, reject) =>
+        setTimeout(
+          () => reject(new Error(`Telegram API timeout after ${TELEGRAM_API_TIMEOUT_MS}ms`)),
+          TELEGRAM_API_TIMEOUT_MS,
+        ),
+      ),
+    ]);
+  }
+
+  /**
+   * Forward a file chunk to the configured Telegram storage chat.
+   *
+   * The upload is submitted to the least-loaded bot's queue. If the bot
+   * returns 429, it is marked rate-limited and the upload retries on the
+   * next available bot. If all bots are rate-limited, sleeps before retrying.
+   */
+  async forwardToStorage(
+    fileChunk: unknown,
+    fileName: string,
+    fileType: string,
+  ): Promise<ForwardResult> {
+    let lastError: unknown;
+    const attemptedIndexes = new Set<number>();
+    let transientAttempts = 0;
+
+    // Outer retry loop — up to 10 attempts across all bots
+    for (let attempt = 0; attempt < 10; attempt++) {
+      const bot = this.selectBot(attemptedIndexes);
+
+      if (!bot) {
+        // No available bots — either all rate-limited or all attempted
+        if (attemptedIndexes.size > 0) {
+          // All non-rate-limited bots were tried and failed — wait & reset
+          logger.warn('All available bots exhausted, sleeping 5s before retry');
+          await sleep(5000 + Math.random() * 1000);
+          attemptedIndexes.clear();
+          continue;
+        }
+        // All bots rate-limited — wait for the shortest cooldown
+        const earliestCooldown = Math.min(
+          ...this.bots.map((b) => b.rateLimitedUntil || Infinity),
+        );
+        const waitMs = Math.max(1000, earliestCooldown - Date.now() + 500);
+        logger.warn('All bots rate-limited, waiting', { waitMs });
+        await sleep(waitMs);
+        attemptedIndexes.clear();
+        continue;
+      }
+
+      attemptedIndexes.add(bot.index);
+
+      try {
+        const result = await bot.queue.add(async () => {
+          // Inner transient retry loop inside the queue
+          for (let innerRetry = 0; innerRetry <= MAX_TRANSIENT_RETRIES; innerRetry++) {
+            try {
+              const filePayload = { source: fileChunk, filename: fileName };
+              const sendMethodName = sendMethodMap[fileType] || 'sendDocument';
+              const payload = buildSendPayload(fileType, fileName);
+
+              const tgResult = await this.executeBotAction<TelegramMessageResult>(
+                bot,
+                (activeBot) => {
+                  const telegram = activeBot.telegram as unknown as Record<string, SendMethod>;
+                  return telegram[sendMethodName](config.storageChatId, filePayload, payload);
+                },
+              );
+
+              const uploadedFile = extractUploadedFile(tgResult, fileType);
+              return {
+                telegramFileId: uploadedFile?.file_id || '',
+                telegramFileUniqueId: uploadedFile?.file_unique_id || '',
+                storageMessageId: tgResult.message_id,
+              };
+            } catch (error: unknown) {
+              const errorStr = error instanceof Error ? error.message : String(error);
+              const retryAfterMatch = errorStr.match(/retry after (\d+)/i);
+
+              if (retryAfterMatch) {
+                // 429 — mark bot rate-limited, throw to outer loop for retry on different bot
+                const seconds = parseInt(retryAfterMatch[1], 10);
+                bot.rateLimitedUntil = Date.now() + seconds * 1000;
+                logger.info(`Bot #${bot.index} rate-limited for ${seconds}s`, { fileName, attempt });
+                throw error; // caught by outer retry loop
+              }
+
+              if (innerRetry < MAX_TRANSIENT_RETRIES && isTransientError(error)) {
+                const backoffMs = Math.min(1000 * 2 ** innerRetry, 10_000);
+                logger.warn(
+                  `Transient error on bot #${bot.index}, retrying (${innerRetry + 1}/${MAX_TRANSIENT_RETRIES})`,
+                  { fileName, error: errorStr, backoffMs },
+                );
+                await sleep(backoffMs);
+                continue;
+              }
+
+              throw error; // non-transient — propagate
+            }
+          }
+
+          throw new Error(`Exhausted transient retries on bot #${bot.index}`);
+        });
+
+        logger.info('File forwarded to storage', { fileName, message: result.storageMessageId });
+        return result;
+      } catch (error: unknown) {
+        lastError = error;
+        const errorStr = error instanceof Error ? error.message : String(error);
+        const retryAfterMatch = errorStr.match(/retry after (\d+)/i);
+
+        if (retryAfterMatch) {
+          // Bot was rate-limited — already marked, try next bot
+          continue;
+        }
+
+        // Transient error at the queue level (timeout, 5xx)
+        if (transientAttempts < MAX_TRANSIENT_RETRIES && isTransientError(error)) {
+          transientAttempts++;
+          continue;
+        }
+
+        // Non-transient — give up
+        logger.error('Failed to forward file to storage', {
+          fileName,
+          error: errorStr,
+          attempt,
+        });
+        throw error;
+      }
+    }
+
+    throw lastError || new Error('Failed to forward file after all retries');
+  }
+
+  /** Get total effective concurrency across all bots */
+  getEffectiveConcurrency(): number {
+    return this.bots.length * PER_BOT_CONCURRENCY;
+  }
+
+  async getFileInfo(telegramFileId: string): Promise<TelegramFileInfo> {
+    let lastError: unknown;
+    for (const bot of this.bots) {
+      for (let retry = 0; retry <= MAX_TRANSIENT_RETRIES; retry++) {
+        try {
+          const result = await bot.instance.telegram.getFile(telegramFileId);
+          const fileData = result as unknown as Omit<TelegramFileInfo, 'bot_token'>;
+          return {
+            file_size: fileData.file_size || 0,
+            mime_type: fileData.mime_type || 'application/octet-stream',
+            file_path: fileData.file_path || '',
+            bot_token: bot.token,
+          };
+        } catch (error: unknown) {
+          lastError = error;
+          const errorStr = error instanceof Error ? error.message : String(error);
+          if (
+            errorStr.includes('wrong file_id') ||
+            errorStr.includes('file is temporarily unavailable')
+          ) {
+            break;
+          }
+          if (retry < MAX_TRANSIENT_RETRIES && isTransientError(error)) {
+            const backoffMs = Math.min(1000 * 2 ** (retry + 1), 5_000);
+            await sleep(backoffMs);
+            continue;
+          }
+          break;
+        }
+      }
+    }
+    logger.error('Failed to get file info from any bot', {
+      error: lastError instanceof Error ? lastError.message : String(lastError),
+    });
+    throw lastError;
+  }
+}
+
+export const botPool = new BotPool();
+```
+
+- [ ] **Step 3: Run lint**
+
+Run: `bunx biome check src/infrastructure/telegram/bot-pool.ts`
+Expected: No errors.
+
+- [ ] **Step 4: Run existing test suite**
+
+Run: `bun test test/bot.test.ts`
+Expected: All tests pass.
+
+- [ ] **Step 5: Commit**
+
+```bash
+git add src/infrastructure/telegram/bot-pool.ts
+git commit -m "refactor: per-bot queue with selectBot() and rate-limit tracking
+
+Each bot has its own PQueue (concurrency=1). Uploads are assigned to
+the least-loaded available bot. On 429, the bot is marked rate-limited
+and the upload retries on the next available bot.
+
+Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>"
+```
+
+### Task 4: Remove global upload queue
+
+Delete the global queue, its test, and all references to it from index.ts.
+
+**Files:**
+- Delete: `src/infrastructure/telegram/upload-queue.ts`
+- Modify: `src/index.ts` (lines 4, 71-81)
+- Delete: `test/telegramQueue.test.ts`
+
+- [ ] **Step 1: Delete upload-queue.ts**
+
+Run: `rm src/infrastructure/telegram/upload-queue.ts`
+
+- [ ] **Step 2: Delete the test file**
+
+Run: `rm test/telegramQueue.test.ts`
+
+- [ ] **Step 3: Update index.ts — remove upload-queue import and shutdown drain logic**
+
+Remove line:
+```typescript
+import { clearQueue, getQueueStats, waitForQueue } from './infrastructure/telegram/upload-queue';
+```
+
+Remove the drain block (lines 70-81):
+```typescript
+  // Drain pending upload queue with a timeout
+  const { pending, size } = getQueueStats();
+  if (pending > 0 || size > 0) {
+    logger.info('Draining upload queue', { pending, size });
+    const drainTimeout = setTimeout(() => {
+      logger.warn('Upload queue drain timeout — clearing remaining tasks');
+      clearQueue();
+    }, 30_000);
+    await waitForQueue();
+    clearTimeout(drainTimeout);
+    logger.info('Upload queue drained');
+  }
+```
+
+- [ ] **Step 4: Run lint**
+
+Run: `bunx biome check src/index.ts`
+Expected: No errors.
+
+- [ ] **Step 5: Run tests**
+
+Run: `bun test`
+Expected: All tests pass (some may be skipped due to missing queue test).
+
+- [ ] **Step 6: Commit**
+
+```bash
+git add src/infrastructure/telegram/upload-queue.ts test/telegramQueue.test.ts src/index.ts
+git commit -m "refactor: remove global upload queue
+
+Per-bot queues now handle concontrol internally.
+
+Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>"
+```
+
+### Task 5: Update env.ts and chunked-storage backpressure
+
+Remove `uploadConcurrency` from config and update chunked-storage to derive effective concurrency from bot pool.
+
+**Files:**
+- Modify: `src/env.ts`
+- Modify: `src/utils/chunked-storage.ts`
+
+- [ ] **Step 1: Remove `uploadConcurrency` from env.ts**
+
+Remove:
+```typescript
+  uploadConcurrency: number;
+```
+and:
+```typescript
+  uploadConcurrency: parseNumber(process.env.UPLOAD_CONCURRENCY, 8),
+```
+
+- [ ] **Step 2: Update chunked-storage.ts backpressure**
+
+Replace:
+```typescript
+import { config } from '../env';
+// ...
+if (inFlight.size >= config.uploadConcurrency * 2) {
+```
+With:
+```typescript
+import { botPool } from '../infrastructure/telegram/bot-pool';
+// ...
+if (inFlight.size >= botPool.getEffectiveConcurrency()) {
+```
+(Use effective concurrency * 2 for backpressure, or just use effective concurrency as the limit.)
+
+Actually let me think about this more carefully. The backpressure in chunked-storage:
+```
+if (inFlight.size >= config.uploadConcurrency * 2) {
+  await Promise.race(inFlight);
+  await new Promise((resolve) => setTimeout(resolve, 0));
+}
+```
+
+This limits the number of in-flight chunks per file. With `uploadConcurrency: 16`, it was 32. Now with effective concurrency of 6 (6 bots), it would be 12. That's fine as backpressure — it prevents too many chunks from being in memory at once.
+
+Let me use `botPool.getEffectiveConcurrency() * 2` to keep the same multiplier.
+
+- [ ] **Step 3: Run lint and tests**
+
+```bash
+bunx biome check src/env.ts src/utils/chunked-storage.ts
+bun test test/chunked-storage.test.ts
+```
+
+Expected: All checks pass.
+
+- [ ] **Step 4: Commit**
+
+```bash
+git add src/env.ts src/utils/chunked-storage.ts
+git commit -m "refactor: remove uploadConcurrency from config
+
+Effective concurrency derived from bot pool size. Chunked-storage
+backpressure now uses botPool.getEffectiveConcurrency().
+
+Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>"
+```
+
+### Task 6: Full integration test
+
+- [ ] **Step 1: Run the full test suite**
+
+Run: `bun test`
+Expected: All tests pass.
+
+- [ ] **Step 2: Run lint**
+
+Run: `bunx biome check src test`
+Expected: No errors.
+
+- [ ] **Step 3: Create summary commit**
+
+```bash
+git add -A
+git commit -m "refactor: implement per-bot queue architecture
+
+- Each bot has its own PQueue with concurrency=1
+- selectBot() assigns uploads to least-loaded available bot
+- 429 rate limits are tracked per-bot with cooldown timers
+- Failed uploads retry on next available bot
+- Removed global upload-queue.ts and uploadConcurrency config
+- Updated ITelegramService interface
+
+Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>"
+```
@@ -1,5 +1,10 @@
 # Telegram Bot Uploader Backend Design

+> ⚠️ **LEGACY** — Dokumen historis (2026-05-17). Port & infrastruktur sudah berubah:
+> produksi kini berjalan di port `4000` (Nix + systemd + Caddy, domain `upload.asepharyana.my.id`)
+> dan database via PgBouncer pool `100.121.180.82:6432` (bukan port 5432, bukan localhost).
+
+
 **Date:** 2026-05-17  
 **Status:** Approved  
 **Stack:** Bun, Telegraf, PostgreSQL, Drizzle ORM, Winston, nanoid
@@ -35,7 +40,7 @@ Production-ready backend untuk Telegram file uploader dengan dual upload methods
 4. Bot extracts `telegram_file_id`, `telegram_file_unique_id`, `storage_message_id`
 5. Bot generates `public_id` using nanoid
 6. Bot saves metadata to PostgreSQL
-7. Bot replies with download link: `https://tele.asepharyana.my.id/f/{public_id}`
+7. Bot replies with download link: `https://upload.asepharyana.my.id/f/{public_id}`

 #### Upload via HTTP API
 1. Client POSTs to `/api/upload` with file (multipart or base64)
@@ -115,7 +120,7 @@ fileName: optional_filename.ext
  "size_bytes": 1024000,
  "file_type": "document",
  "created_at": "2026-05-17T23:42:19Z",
-  "download_url": "https://tele.asepharyana.my.id/f/abc123xyz"
+  "download_url": "https://upload.asepharyana.my.id/f/abc123xyz"
 }
 ```

@@ -212,9 +217,9 @@ schema.sql
 ```
 BOT_TOKEN=<telegram_bot_token>
 STORAGE_CHANNEL_ID=<private_channel_id>
-BASE_URL=https://tele.asepharyana.my.id
-DATABASE_URL=postgresql://user:password@localhost:5432/telegram_uploader
-PORT=3000
+BASE_URL=https://upload.asepharyana.my.id
+DATABASE_URL=postgresql://asephs:***@100.121.180.82:6432/uploader
+PORT=4000
 NODE_ENV=production
 LOG_LEVEL=info
 RATE_LIMIT_WINDOW_MS=60000
@@ -7,6 +7,12 @@ metadata:

 # Design: TeleUploader Deployment & CI/CD Setup

+> ⚠️ **LEGACY** — Dokumen historis (2026-05-18) untuk arsitektur Docker + Traefik +
+> GitHub Actions. Docker & Traefik sudah dihapus dari VPS produksi (2026-08-02):
+> deploy sekarang Nix + systemd + Caddy di orangevps, port `4000`, domain
+> `upload.asepharyana.my.id`, database via PgBouncer pool `100.121.180.82:6432`.
+
+
 We are setting up production deployment for TeleUploader on VPS `45.127.35.244` behind Traefik utilizing GitHub Actions.

 ## 1. System Architecture
@@ -22,7 +28,7 @@ TeleUploader is a Bun-based service.
 ### `Dockerfile`
 - Multi-stage build.
 - **Stage 1 (Build)**: Install dependencies, copy source files, run Biome lint/format checks, compile TS build to `dist/index.js` using `bun build`.
- **Stage 2 (Run)**: Use minimal `oven/bun:1.1-slim` runtime. Copy `dist/index.js`, `schema.sql`, and `package.json`. Expose port `3000`.
+- **Stage 2 (Run)**: Use minimal `oven/bun:1.1-slim` runtime. Copy `dist/index.js`, `schema.sql`, and `package.json`. Expose port `4000`.

 ### `docker-compose.yml`
 ```yaml
@@ -38,7 +44,7 @@ services:
      - STORAGE_CHANNEL_ID=${STORAGE_CHANNEL_ID}
      - BASE_URL=${BASE_URL}
      - DATABASE_URL=${DATABASE_URL}
-      - PORT=3000
+      - PORT=4000
      - NODE_ENV=production
      - LOG_LEVEL=info
    networks:
@@ -49,7 +55,7 @@ services:
      - "traefik.http.routers.teleuploader.entrypoints=websecure"
      - "traefik.http.routers.teleuploader.tls=true"
      - "traefik.http.routers.teleuploader.tls.certresolver=letsencrypt"
-      - "traefik.http.services.teleuploader.loadbalancer.server.port=3000"
+      - "traefik.http.services.teleuploader.loadbalancer.server.port=4000"

 networks:
  app-shared-net:
@@ -1,5 +1,7 @@
 # Gitea Remote and CI/CD Migration Design

+> Catatan (2026-08-02): Produksi sekarang port 4000, deploy Nix+systemd di orangevps, Caddy reverse proxy upload.asepharyana.my.id, DB via pgbouncer pool imrnes 100.121.180.82:6432. Docker/Traefik/Gitea-CI legacy.
+
 ## Goal

 Move the repository origin from GitLab to a new Gitea repository and add a Gitea Actions deployment flow that behaves like a GitHub Actions CI/CD pipeline.
@@ -1,5 +1,7 @@
 # S3 Compatibility Completion Design

+> Catatan (2026-08-02): Produksi sekarang port 4000, deploy Nix+systemd di orangevps, Caddy reverse proxy upload.asepharyana.my.id, DB via pgbouncer pool imrnes 100.121.180.82:6432. Docker/Traefik/Gitea-CI legacy.
+
 Date: 2026-07-07

 ## Goal
@@ -0,0 +1,310 @@
+# DDD & Clean Architecture Restructure — TeleUploader (filedrop)
+
+**Date:** 2026-07-28
+**Author:** Claude
+**Status:** Draft
+
+## 1. Motivation
+
+The current codebase uses a flat structure (`src/routes/`, `src/utils/`, `src/db/`) that mixes concerns:
+
+- Route handlers contain inline DB queries, Telegram API calls, and business logic
+- Domain entity types (from Drizzle ORM) leak into all layers
+- No clear separation between HTTP concerns, application logic, and infrastructure
+- Large files (`routes/s3.ts` at 1179 lines) are hard to maintain, test, and reason about
+
+The goal is to restructure into **Domain-Driven Design (DDD)** with **Clean Architecture** principles, adding **JSDoc documentation** throughout, without changing behaviour or breaking existing tests.
+
+## 2. Approach: Hybrid C
+
+| Aspect | Decision |
+|--------|----------|
+| **Depth** | Structural DDD + repository abstraction + controller/use-case separation |
+| **Domain entities** | Re-use Drizzle-generated types (pragmatic, not creating new pure domain models) |
+| **Dependency inversion** | Repository interfaces defined in `domain/ports/`, implementations in `infrastructure/` |
+| **Dependency injection** | Simple factory functions (no DI framework) |
+| **Testing** | Test files restructured alongside source files |
+| **Documentation** | JSDoc on all public functions, classes, interfaces, and types |
+| **Language** | English for code and JSDoc |
+
+## 3. Layer Architecture
+
+```
+┌─────────────────────────────────────────────┐
+│          interfaces/  (Delivery)             │
+│  HTTP controllers, routes, middleware        │
+│  Bot handlers                                │
+│  S3 protocol (SigV4, XML, range, stream)     │
+├─────────────────────────────────────────────┤
+│          application/  (Use Cases)           │
+│  Upload file, get file, auth, bucket ops,    │
+│  S3 object ops, multipart upload             │
+├────────────────────┬────────────────────────┤
+│    domain/         │   infrastructure/      │
+│  entities/         │   persistence/         │
+│  ports/ (interfaces)│   telegram/           │
+│                    │   cache/               │
+├────────────────────┴────────────────────────┤
+│           config/ + shared/                  │
+└─────────────────────────────────────────────┘
+```
+
+**Dependency Rule:** Outer layers depend on inner layers, never the reverse. Domain knows nothing about HTTP, Drizzle, or Telegram.
+
+## 4. Full Directory Structure
+
+```
+src/
+├── index.ts                           # Entry point: server bootstrap, lifecycle
+├── domain/
+│   ├── entities/
+│   │   ├── file.ts                    # File entity type (re-export from drizzle)
+│   │   ├── bucket.ts                  # Bucket entity type
+│   │   ├── file-part.ts               # FilePart entity type
+│   │   └── multipart.ts               # MultipartUpload, MultipartPart types
+│   └── ports/
+│       ├── file-repository.ts         # IFileRepository interface
+│       ├── bucket-repository.ts       # IBucketRepository interface
+│       ├── file-part-repository.ts    # IFilePartRepository interface
+│       └── multipart-repository.ts    # IMultipartRepository interface
+├── application/
+│   ├── dto/
+│   │   ├── upload.ts                  # Upload request/response DTOs
+│   │   ├── file.ts                    # File response DTOs
+│   │   ├── bucket.ts                  # Bucket DTOs
+│   │   ├── s3.ts                      # S3 operation DTOs
+│   │   └── auth.ts                    # Auth DTOs
+│   └── use-cases/
+│       ├── upload-file.ts             # Upload logic (multipart, JSON base64)
+│       ├── get-file.ts                # File redirect/stream logic
+│       ├── manage-bucket.ts            # Bucket CRUD logic
+│       ├── s3-object.ts               # S3 get/put/delete/copy logic
+│       ├── multipart-upload.ts        # S3 multipart upload logic
+│       └── authenticate.ts            # Login/logout/session logic
+├── infrastructure/
+│   ├── persistence/
+│   │   ├── drizzle/
+│   │   │   ├── index.ts               # DB client + Drizzle init (from db/index.ts)
+│   │   │   └── schema.ts              # Drizzle table definitions (from db/schema.ts)
+│   │   │   └── migrate.ts             # Migration runner (from db/migrate.ts)
+│   │   └── repositories/
+│   │       ├── file-repository.ts     # IFileRepository implementation (Drizzle)
+│   │       ├── bucket-repository.ts   # IBucketRepository implementation
+│   │       ├── file-part-repository.ts# IFilePartRepository implementation
+│   │       └── multipart-repository.ts# IMultipartRepository implementation
+│   ├── telegram/
+│   │   ├── bot-pool.ts                # Multi-bot pool + retry (from utils/telegram.ts)
+│   │   ├── upload-queue.ts            # P-Queue wrapper (from utils/telegramQueue.ts)
+│   │   ├── upload-batcher.ts          # Batch upload (from utils/uploadBatcher.ts)
+│   │   ├── chunked-storage.ts         # Chunked file storage (from utils/chunked-storage.ts)
+│   │   └── types.ts                   # Telegram-related types
+│   └── cache/
+│       └── index.ts                   # Generic TTL cache (from utils/cache.ts)
+├── interfaces/
+│   ├── http/
+│   │   ├── controllers/
+│   │   │   ├── upload-controller.ts   # Upload HTTP handler
+│   │   │   ├── file-controller.ts     # File redirect + info handler
+│   │   │   ├── auth-controller.ts     # Login/logout/me handler
+│   │   │   ├── home-controller.ts     # Home dashboard handler
+│   │   │   ├── health-controller.ts   # Health check handler
+│   │   │   ├── s3-controller.ts       # S3-compatible API handler
+│   │   │   └── web-api-controller.ts  # JSON REST API handler
+│   │   ├── middleware/
+│   │   │   ├── auth.ts                # requireAuth, getAuthSession
+│   │   │   └── rate-limit.ts          # Rate limiter
+│   │   └── routes/
+│   │       └── index.ts               # All route definitions
+│   ├── bot/
+│   │   └── handler.ts                 # Telegram bot event handlers (from bot.ts)
+│   └── s3/
+│       ├── auth.ts                    # SigV4 verification (from utils/s3/auth.ts)
+│       ├── headers.ts                 # CORS/response headers
+│       ├── object-stream.ts            # Part streaming for GetObject
+│       ├── range.ts                   # HTTP Range header parser
+│       ├── virtual-host.ts            # Virtual-hosted bucket extraction
+│       └── xml.ts                     # S3 XML response builders/parsers
+├── config/
+│   └── index.ts                       # Environment config (from env.ts)
+├── shared/
+│   ├── errors/
+│   │   └── index.ts                   # Domain + application error classes
+│   ├── logger/
+│   │   └── index.ts                   # Winston logger (from utils/logger.ts)
+│   ├── metrics/
+│   │   └── index.ts                   # Metrics collector (from utils/metrics.ts)
+│   └── utils/
+│       ├── file.ts                    # File type, MIME, hash, extension (from utils/file.ts)
+│       ├── ip.ts                      # Client IP extraction (from utils/ip.ts)
+│       ├── retry.ts                   # Retry/timeout/fallback (from utils/retry.ts)
+│       └── zip.ts                     # ZIP create/extract (from utils/zip.ts)
+```
+
+## 5. Dependency Injection Pattern
+
+No DI framework. Use-case factories accept repository interfaces:
+
+```typescript
+// domain/ports/file-repository.ts
+export interface IFileRepository {
+  findByHash(hash: string): Promise<File | null>;
+  findByPublicId(publicId: string): Promise<File | null>;
+  findByUniqueId(uniqueId: string): Promise<File | null>;
+  findByBucketAndKey(bucketId: string, key: string): Promise<File | null>;
+  create(file: NewFile): Promise<File>;
+  softDelete(bucketId: string, key: string): Promise<boolean>;
+  listByPrefix(...): Promise<{ objects: File[]; prefixes: string[] }>;
+}
+
+// application/use-cases/upload-file.ts
+export function createUploadFileUseCase(repos: {
+  fileRepo: IFileRepository;
+  filePartRepo: IFilePartRepository;
+  telegramService: ITelegramService;
+  config: AppConfig;
+}) {
+  return async (input: UploadInput): Promise<UploadOutput> => {
+    // business logic here, using repos.xxx() not db directly
+  };
+}
+```
+
+This keeps use cases testable — inject mock repositories in tests.
+
+## 6. Controller / Use-Case Boundary
+
+**Controller responsibilities:**
+- Parse HTTP request (body, params, headers)
+- Call use case
+- Format HTTP response
+
+**Use case responsibilities:**
+- Business logic (file size checks, dedup, chunking decisions)
+- Orchestrate infrastructure calls (Telegram, DB, cache)
+- Return DTOs
+
+**Example flow for upload:**
+```
+UploadController.handleUpload(req)
+  → parse multipart form data
+  → write to temp file
+  → call uploadFileUseCase({ tempPath, fileName, mimeType, ... })
+      → check dedup (fileRepo.findByHash)
+      → check file size limits
+      → if chunked: telegramService.uploadChunks(...), filePartRepo.create(...)
+      → if batch: telegramService.enqueueBatch(...)
+      → fileRepo.create(...)
+      → return UploadOutput
+  → format response (buildUploadResponse)
+  → return Response
+```
+
+## 7. Migration Strategy
+
+The restructure will be done in one pass per layer, with tests updated in lockstep:
+
+1. Create new folder structure
+2. Move `shared/` utilities first (no dependencies on other layers)
+3. Move `config/`
+4. Move `domain/` entities + ports
+5. Move `infrastructure/` persistence + telegram + cache
+6. Move `application/` use cases + DTOs
+7. Move `interfaces/` controllers + middleware + routes
+8. Update `src/index.ts` entry point
+9. Restructure test files matching new layout
+10. Run all tests, fix import paths
+11. Delete old folders
+
+## 8. Entity Architecture
+
+```
+┌──────────────────────────────────────────────┐
+│              Domain Layer                     │
+│  Entities: File, Bucket, FilePart,            │
+│            MultipartUpload, MultipartPart      │
+│  Ports: IFileRepository, IBucketRepository,   │
+│         IFilePartRepository,                   │
+│         IMultipartRepository                   │
+├──────────────────────────────────────────────┤
+│           Application Layer                    │
+│  UploadFileUseCase                             │
+│  ├── depends on IFileRepository               │
+│  ├── depends on IFilePartRepository            │
+│  └── depends on ITelegramService              │
+│                                               │
+│  S3ObjectUseCase                               │
+│  ├── depends on IFileRepository               │
+│  ├── depends on IBucketRepository             │
+│  ├── depends on IMultipartRepository          │
+│  └── depends on ITelegramService              │
+└──────────────────────────────────────────────┘
+```
+
+## 9. Telegram Service Interface
+
+A new `ITelegramService` interface in `domain/ports/` to abstract Telegram operations:
+
+```typescript
+export interface ITelegramService {
+  forwardToStorage(fileChunk: unknown, fileName: string, fileType: string): Promise<ForwardResult>;
+  getFileInfo(telegramFileId: string): Promise<TelegramFileInfo>;
+  enqueueUpload<T>(task: () => Promise<T>): Promise<T>;
+}
+```
+
+Implementation stays in `infrastructure/telegram/`.
+
+## 10. JSDoc Standards
+
+Every exported function, interface, type, and class gets JSDoc:
+
+```typescript
+/**
+ * Uploads a file to Telegram storage, handling chunking for large files
+ * and batch deduplication for small files.
+ *
+ * @param input - The prepared upload data and metadata
+ * @param input.tempPath - Path to the temporary file on disk
+ * @param input.fileName - Display name for the file
+ * @param input.mimeType - MIME type of the file
+ * @param input.fileType - Telegram file category (document, photo, etc.)
+ * @param input.sizeBytes - File size in bytes
+ * @returns The stored file entity with Telegram metadata
+ * @throws {FileTooLargeError} If file exceeds Telegram size limits
+ */
+```
+
+## 11. Error Handling
+
+Custom error classes replacing generic `Error` throws:
+
+```typescript
+// shared/errors/index.ts
+export class DomainError extends Error { constructor(msg: string) { super(msg); this.name = 'DomainError'; } }
+export class FileNotFoundError extends DomainError {}
+export class BucketNotFoundError extends DomainError {}
+export class FileTooLargeError extends DomainError {}
+export class DuplicateFileError extends DomainError {}
+export class AuthenticationError extends DomainError {}
+export class ValidationError extends DomainError {}
+```
+
+Use cases throw domain errors. Controllers catch and format HTTP responses.
+
+## 12. Existing Files That Remain Unchanged
+
+Files that are purely structural (no business logic restructuring needed):
+
+| Old Path | New Path |
+|----------|----------|
+| `src/home.html` | `src/interfaces/http/controllers/home.html` (or alongside home controller) |
+| `src/utils/s3/*` | `src/interfaces/s3/*` (moved as-is) |
+| `src/db/migrate.ts` | `src/infrastructure/persistence/drizzle/migrate.ts` |
+
+## 13. State After Migration
+
+- **Total source files:** ~60 (was ~30) — more focused files, each with clear responsibility
+- **JSDoc coverage:** 100% of exported APIs
+- **Test files:** ~24, restructured to mirror source layout
+- **Behaviour changes:** Zero. No logic is altered, only moved
+- **External interfaces:** All API endpoints, S3 XML formats, and response shapes unchanged
@@ -0,0 +1,127 @@
+# Per-Bot Queue: Rate-Limit Safe Telegram Upload
+
+**Date:** 2026-07-29
+**Status:** Approved Design
+
+## Problem
+
+Telegram Bot API rate-limits each bot to approximately 1-2 concurrent uploads. When multiple upload chunks hit the same bot simultaneously, Telegram returns HTTP 429 (Too Many Requests), causing delays of 30-60 seconds per retry. Under Docker push load, these cumulative delays trigger Gitea client timeouts and `500 Internal Server Error`.
+
+> Catatan (2026-08-02): Produksi sekarang port 4000, deploy Nix+systemd di orangevps, Caddy reverse proxy upload.asepharyana.my.id, DB via pgbouncer pool imrnes 100.121.180.82:6432. Docker/Traefik/Gitea-CI legacy.
+
+The current architecture uses a **global PQueue** with `concurrency=N` where each task picks a bot via round-robin (`claimBotIndex()`). This means two concurrent tasks can both land on the same bot index (after wrap-around), causing 429 collisions.
+
+## Solution: Per-Bot Queue
+
+Each bot has its own PQueue with `concurrency=1`. Uploads are assigned to the bot with the fewest pending tasks. If a bot rate-limits, the upload moves to the next available bot.
+
+### Architecture
+
+```
+┌────────────────────────────────────────────────────────┐
+│                      BotPool                           │
+│                                                        │
+│  ┌──────────────────────────────────────────────────┐  │
+│  │ BotEntry[0]    token=b1  queue=PQueue(conc=1)    │  │
+│  │                rateLimitedUntil=0                  │  │
+│  ├──────────────────────────────────────────────────┤  │
+│  │ BotEntry[1]    token=b2  queue=PQueue(conc=1)    │  │
+│  │                rateLimitedUntil=0                  │  │
+│  ├──────────────────────────────────────────────────┤  │
+│  │ ... up to N bots                                   │  │
+│  └──────────────────────────────────────────────────┘  │
+│                                                        │
+│  selectBot(skip?): number                              │
+│    └─ bot dengan pending queue paling sedikit           │
+│       dan tidak sedang rate-limited                     │
+│                                                        │
+│  forwardToStorage(file): ForwardResult                 │
+│    └─ retry loop: selectBot → queue.add → handle 429   │
+└────────────────────────────────────────────────────────┘
+```
+
+### BotEntry Structure
+
+```typescript
+interface BotEntry {
+  index: number;
+  token: string;
+  instance: Telegraf;
+  queue: PQueue;            // concurrency: 1
+  rateLimitedUntil: number;  // epoch ms, 0 = not limited
+}
+```
+
+### Data Flow: Upload
+
+```
+forwardToStorage(fileChunk, fileName, fileType)
+  │
+  ├─ MAX_RETRIES loop (attempt up to all bots)
+  │   │
+  │   ├─ selectBot(attemptedIndexes)
+  │   │   ├─ Filter out rate-limited bots (rateLimitedUntil > Date.now())
+  │   │   ├─ Filter out already-attempted bots
+  │   │   ├─ If none available:
+  │   │   │   ├─ Wait MIN_SLEEP_MS (5000ms)
+  │   │   │   ├─ Reset rate-limited timers (clear attemptedIndexes)
+  │   │   │   └─ Retry selectBot
+  │   │   └─ Return bot with smallest queue.pending count
+  │   │
+  │   ├─ attemptedIndexes.add(selectedBot)
+  │   │
+  │   ├─ result = await bots[selectedBot].queue.add(() =>
+  │   │     executeTelegramCall(bot, fileChunk, fileName)
+  │   │   )
+  │   │   │
+  │   │   ├─ ✅ Success → return ForwardResult
+  │   │   │
+  │   │   └─ ❌ Error
+  │   │       ├─ 429 → markRateLimited(bot, retryAfter)
+  │   │       │        → continue to next bot in retry loop
+  │   │       ├─ Transient (timeout, 5xx) → continue
+  │   │       └─ Non-transient → throw (propagate up)
+  │   │
+  │   └─ Attempt counter exhausted → throw lastError
+  │
+  └─ Sorted part tracking (for chunked uploads)
+```
+
+### Key Design Decisions
+
+1. **Concurrency=1 per bot**: Guarantees no two Telegram API calls compete for the same bot token. With 6 bots, effective concurrency = 6.
+
+2. **Least-loaded assignment**: `selectBot()` picks the bot with the fewest queued + pending tasks. This naturally load-balances even when some bots are slower.
+
+3. **Rate-limit isolation**: When bot A hits 429, only bot A's queue is paused. Other 5 bots continue serving uploads uninterrupted.
+
+4. **Per-bot rate-limit timer**: `rateLimitedUntil` prevents re-selecting a recently-429'd bot until its cooldown expires.
+
+5. **No global PQueue**: The old `upload-queue.ts` is removed. Each bot owns its queue, eliminating the global backpressure problem.
+
+### Changes by File
+
+| File | Action |
+|------|--------|
+| `src/infrastructure/telegram/bot-pool.ts` | **Major refactor**: BotEntry array, selectBot(), per-bot queues, retry loop |
+| `src/infrastructure/telegram/upload-queue.ts` | **Delete**: No longer needed |
+| `src/domain/ports/telegram-service.ts` | **Remove** `enqueueUpload<T>(task: () => Promise<T>): Promise<T>` from interface |
+| `src/utils/chunked-storage.ts` | **No changes** — only uses `forwardToStorage()` |
+| `src/env.ts` | **Remove** `uploadConcurrency` config (no longer needed) |
+
+### Error Handling
+
+- **429 per bot**: Mark bot rate-limited, move to next. Clear timer after `retryAfter` seconds.
+- **All bots 429**: Sleep 5 seconds with jitter, then retry from bot 0.
+- **Transient errors** (timeout, 5xx, connection reset): Retry on same bot (inside its queue), then on next bot.
+- **Non-transient errors** (4xx other than 429, wrong file_id, auth errors): Propagate immediately.
+- **MAX_RETRIES**: 10 attempts across all bots before giving up.
+
+### Testing
+
+- Unit: `selectBot()` returns bot with fewest pending tasks
+- Unit: `selectBot()` skips rate-limited bots
+- Unit: 429 on bot 0 → retries on bot 1 → succeeds
+- Unit: All bots rate-limited → sleeps → retries → succeeds
+- Unit: Per-bot queue has concurrency=1 (two tasks to same bot queue sequentially)
+- Integration: Forward a real file through the per-bot pool
@@ -0,0 +1,61 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1785301185,
+        "narHash": "sha256-eoS3KQTO0aPWXZvIaRbRAzSSHW3l5wdMFXtT1ISfoKA=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "9bc02893134c733dd85de46ee4fb2fac696b5529",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
@@ -0,0 +1,85 @@
+{
+  description = "TeleUploader — Nix build";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { self, nixpkgs, flake-utils }:
+    flake-utils.lib.eachSystem [ "x86_64-linux" ] (system:
+      let
+        pkgs = import nixpkgs { inherit system; };
+
+        # TeleUploader package
+        teleuploader = pkgs.stdenvNoCC.mkDerivation rec {
+          pname = "teleuploader";
+          version = "1.1.0";
+
+          src = ./.;
+
+          nativeBuildInputs = [
+            pkgs.bun
+            pkgs.makeBinaryWrapper
+          ];
+
+          # Bun cache di sandbox — prevent online fetch
+          # Karena bun.lock sudah di repo, bun install --frozen-lockfile
+          # akan pake cache, tapi di Nix sandbox gak ada internet.
+          # Solusi: offline flag
+          preBuild = ''
+            export HOME=$TMPDIR/home
+            mkdir -p $HOME
+            export BUN_INSTALL=$HOME/.bun
+          '';
+
+          buildPhase = ''
+            echo "=== Installing dependencies ==="
+            bun install --frozen-lockfile --ignore-scripts 2>&1
+
+            echo "=== Building ==="
+            bun run build 2>&1
+          '';
+
+          installPhase = ''
+            mkdir -p $out/bin $out/share/teleuploader
+
+            # Copy dist files
+            cp -r dist $out/share/teleuploader/dist
+            cp src/home.html $out/share/teleuploader/ 2>/dev/null || true
+            cp schema.sql $out/share/teleuploader/ 2>/dev/null || true
+
+            # Wrap with bun from Nix store (dependency sharing!)
+            # Note: NO --chdir — systemd WorkingDirectory controls this
+            makeBinaryWrapper ${pkgs.bun}/bin/bun $out/bin/teleuploader \
+              --add-flags "$out/share/teleuploader/dist/index.js" \
+              --set-default NODE_ENV production \
+              --prefix PATH : ${pkgs.lib.makeBinPath [ pkgs.bun ]}
+
+            # Also create the migrate wrapper
+            makeBinaryWrapper ${pkgs.bun}/bin/bun $out/bin/teleuploader-migrate \
+              --add-flags "$out/share/teleuploader/dist/migrate.js" \
+              --prefix PATH : ${pkgs.lib.makeBinPath [ pkgs.bun ]}
+          '';
+
+          meta = {
+            description = "Telegram file uploader backend (S3 → Telegram)";
+            license = pkgs.lib.licenses.mit;
+            platforms = pkgs.lib.platforms.linux;
+          };
+        };
+      in {
+        packages = {
+          inherit teleuploader;
+          default = teleuploader;
+        };
+
+        # Dev shell with bun for local development
+        devShells.default = pkgs.mkShell {
+          buildInputs = [
+            pkgs.bun
+            pkgs.nodejs_22
+          ];
+        };
+      });
+}
@@ -56,7 +56,8 @@ CREATE TABLE IF NOT EXISTS multipart_uploads (
  s3_key TEXT NOT NULL,
  initiated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
  status VARCHAR DEFAULT 'in_progress',
-  initiated_by TEXT
+  initiated_by TEXT,
+  content_type TEXT
 );

 CREATE TABLE IF NOT EXISTS multipart_parts (
@@ -0,0 +1,46 @@
+/**
+ * Input for the login endpoint.
+ * The caller provides the admin API token to obtain a session cookie.
+ */
+export interface LoginInput {
+  /** Admin API token for authentication */
+  token: string;
+}
+
+/**
+ * Active authentication session information.
+ */
+export interface AuthSession {
+  /** Authenticated username (currently always "admin") */
+  username: string;
+  /** Session expiry timestamp; null for bearer-token sessions */
+  expiresAt: Date | null;
+  /** Authentication method used */
+  method: 'cookie' | 'bearer';
+}
+
+/**
+ * Response payload for a successful login.
+ */
+export interface LoginResponse {
+  /** Authenticated username */
+  username: string;
+}
+
+/**
+ * Response payload for logout.
+ */
+export interface LogoutResponse {
+  /** Whether the logout succeeded */
+  success: boolean;
+}
+
+/**
+ * Response payload for the current-user (/me) endpoint.
+ */
+export interface UserInfoResponse {
+  /** Authenticated username */
+  username: string;
+  /** ISO-8601 session expiry timestamp; null when using bearer token */
+  expiresAt: string | null;
+}
@@ -0,0 +1,47 @@
+/**
+ * Input for creating a new bucket.
+ */
+export interface CreateBucketInput {
+  /** Bucket name (must match S3 naming rules: 3-63 chars, lowercase, no underscore) */
+  name: string;
+}
+
+/**
+ * Single bucket representation returned by bucket endpoints.
+ */
+export interface BucketResponse {
+  /** Bucket UUID */
+  id: string;
+  /** Bucket name */
+  name: string;
+  /** ISO-8601 timestamp of when the bucket was created */
+  createdAt: string;
+  /** Number of non-deleted objects in the bucket */
+  objectCount?: number;
+}
+
+/**
+ * Response payload for the list-buckets endpoint.
+ */
+export interface BucketListResponse {
+  /** Array of buckets */
+  buckets: BucketResponse[];
+}
+
+/**
+ * Response payload for bucket creation.
+ */
+export interface CreateBucketResponse {
+  /** Bucket UUID */
+  id: string;
+  /** Bucket name */
+  name: string;
+}
+
+/**
+ * Response payload for bucket deletion.
+ */
+export interface DeleteBucketResponse {
+  /** Whether the deletion succeeded */
+  success: boolean;
+}
@@ -0,0 +1,68 @@
+/**
+ * Public file information response returned by the file-info endpoint.
+ * Mirrors the JSON shape of GET /file/:publicId/info.
+ */
+export interface FileInfoResponse {
+  /** Public, shareable identifier (nanoid) */
+  public_id: string;
+  /** Stored file name */
+  file_name: string;
+  /** MIME type of the stored file */
+  mime_type: string;
+  /** File size in bytes */
+  size_bytes: number;
+  /** High-level file category (e.g. "document", "photo") */
+  file_type: string;
+  /** ISO-8601 timestamp of when the file record was created */
+  created_at: string;
+}
+
+/**
+ * Summary-level file metadata used internally for constructing
+ * upload responses and object listing entries.
+ */
+export interface FileMetadata {
+  /** Public, shareable identifier (nanoid) */
+  publicId: string;
+  /** Telegram file identifier used to retrieve the file from Telegram CDN */
+  telegramFileId: string;
+  /** Telegram unique file identifier (persists across re‑uploads) */
+  telegramFileUniqueId: string;
+  /** Chat ID where the file or archive was stored */
+  storageChatId: number;
+  /** Message ID of the stored file or archive */
+  storageMessageId: number;
+  /** Stored file name */
+  fileName: string;
+  /** MIME type of the stored file */
+  mimeType: string;
+  /** File size in bytes */
+  sizeBytes: number;
+  /** High-level file category */
+  fileType: string;
+  /** Telegram user ID of the uploader; 0 when unknown or system */
+  uploaderId: number;
+  /** Timestamp of file record creation */
+  createdAt: Date | string | number;
+}
+
+/**
+ * Upload response shape returned to API callers.
+ * Mirrors the JSON output of the /api/upload endpoint.
+ */
+export interface UploadResponse {
+  /** Public, shareable identifier */
+  public_id: string;
+  /** Stored file name */
+  file_name: string;
+  /** MIME type */
+  mime_type: string;
+  /** File size in bytes */
+  size_bytes: number;
+  /** High-level file category */
+  file_type: string;
+  /** ISO-8601 creation timestamp */
+  created_at: string;
+  /** Public download URL */
+  download_url: string;
+}
@@ -0,0 +1,87 @@
+/**
+ * A single S3 object as it appears in listing results.
+ */
+export interface S3ObjectResponse {
+  /** The object key (full path within the bucket) */
+  key: string;
+  /** Stored file name (basename of the key) */
+  fileName: string;
+  /** MIME type of the stored object */
+  mimeType: string;
+  /** Object size in bytes */
+  sizeBytes: number;
+  /** High-level file category */
+  fileType: string;
+  /** SHA-256 hex digest of the object content */
+  etag: string | null;
+  /** ISO-8601 timestamp of last modification */
+  lastModified: string;
+  /** Public download URL */
+  downloadUrl: string;
+}
+
+/**
+ * Response payload for S3 ListObjectsV1 / ListObjectsV2.
+ */
+export interface S3ListObjectsResponse {
+  /** Array of object summaries */
+  objects: S3ObjectResponse[];
+  /** Common prefixes when a delimiter was used (e.g. "folder/" entries) */
+  prefixes: string[];
+  /** Whether more results are available */
+  isTruncated: boolean;
+  /** Token to pass as continuation-token to retrieve the next page */
+  nextContinuationToken: string | null;
+}
+
+/**
+ * Input for the copy-object operation (Web API v1).
+ */
+export interface S3CopyObjectInput {
+  /** Source object key within the same or source bucket */
+  sourceKey: string;
+  /** Destination bucket name; defaults to the source bucket when omitted */
+  destBucket?: string;
+  /** Destination object key */
+  destKey: string;
+}
+
+/**
+ * Response payload for the copy-object operation.
+ */
+export interface S3CopyObjectResponse {
+  /** Source object key that was copied */
+  sourceKey: string;
+  /** Destination object key */
+  destKey: string;
+  /** Destination bucket name */
+  destBucket: string;
+}
+
+/**
+ * Summary of a multipart upload in listing results.
+ */
+export interface S3MultipartUploadResponse {
+  /** The object key being uploaded */
+  key: string;
+  /** Upload identifier (nanoid) */
+  uploadId: string;
+  /** ISO-8601 timestamp when the upload was initiated */
+  initiatedAt: Date;
+  /** Identifier string of the upload initiator */
+  initiatedBy: string;
+}
+
+/**
+ * Summary of a single part within a multipart upload.
+ */
+export interface S3MultipartPartResponse {
+  /** 1-indexed part number */
+  partNumber: number;
+  /** ETag of the part content */
+  etag: string;
+  /** Part size in bytes */
+  sizeBytes: number;
+  /** ISO-8601 timestamp when the part was stored */
+  createdAt: Date;
+}
@@ -0,0 +1,46 @@
+/**
+ * Input for the upload file use case.
+ * Carries all metadata needed to persist an uploaded file,
+ * including its temporary location on disk and optional bucket/S3 context.a
+ */
+export interface UploadInput {
+  /** Absolute path to the temporary file on disk */
+  tempPath: string;
+  /** SHA-256 hex digest of the file content */
+  fileHash: string;
+  /** Original file name (may include extension) */
+  fileName: string;
+  /** MIME type detected from content inspection or request header */
+  mimeType: string;
+  /** High-level file category (e.g. "document", "photo", "video") */
+  fileType: string;
+  /** File size in bytes */
+  sizeBytes: number;
+  /** Telegram user ID of the uploader; 0 when unknown or system */
+  uploaderId?: number;
+  /** Target bucket UUID for S3-compatible storage; null when un-bucketed */
+  bucketId?: string | null;
+  /** Object key within the bucket for S3-compatible storage; null when un-bucketed */
+  s3Key?: string | null;
+}
+
+/**
+ * Output from the upload file use case.
+ * Contains the public-facing file metadata returned to the caller.
+ */
+export interface UploadOutput {
+  /** Public, shareable identifier (nanoid) */
+  publicId: string;
+  /** Stored file name (may have been normalized with extension) */
+  fileName: string;
+  /** MIME type of the stored file */
+  mimeType: string;
+  /** File size in bytes */
+  sizeBytes: number;
+  /** High-level file category */
+  fileType: string;
+  /** ISO-8601 timestamp of when the file record was created */
+  createdAt: Date;
+  /** Public download URL */
+  downloadUrl: string;
+}
@@ -0,0 +1,114 @@
+import { timingSafeEqual } from 'node:crypto';
+import type {
+  AuthSession,
+  LoginInput,
+  LoginResponse,
+  LogoutResponse,
+  UserInfoResponse,
+} from '../dto/auth';
+
+/** Subset of application configuration consumed by the authenticate use case. */
+export interface AuthUseCaseConfig {
+  /** Admin API token used to authenticate login requests. */
+  adminApiToken: string;
+  /** Name of the session cookie. */
+  sessionCookieName: string;
+  /** Session lifetime in milliseconds. */
+  sessionMaxAgeMs: number;
+}
+
+/** Dependencies required by the authenticate use case factory. */
+export interface AuthenticateUseCaseDeps {
+  /** Application configuration subset. */
+  config: AuthUseCaseConfig;
+}
+
+/**
+ * Performs a constant-time string comparison to prevent timing attacks.
+ *
+ * @param left - The first string to compare.
+ * @param right - The second string to compare.
+ * @returns `true` if the strings are equal, `false` otherwise.
+ */
+const timingSafeCompare = (left: string, right: string): boolean => {
+  const leftBuffer = Buffer.from(left);
+  const rightBuffer = Buffer.from(right);
+
+  if (leftBuffer.length !== rightBuffer.length) {
+    return false;
+  }
+
+  return timingSafeEqual(leftBuffer, rightBuffer);
+};
+
+/**
+ * Checks whether authentication is enabled based on the configured token.
+ *
+ * @param adminApiToken - The admin API token value.
+ * @returns `true` if the token is non-empty (auth is enabled).
+ */
+const isAuthEnabled = (adminApiToken: string): boolean => adminApiToken.length > 0;
+
+/**
+ * Creates a factory function for the login use case.
+ *
+ * Validates the provided admin API token and returns session metadata on
+ * success. The caller (controller/adapter) is responsible for translating
+ * the result into an HTTP response (e.g. setting a session cookie).
+ *
+ * @param deps - The injected dependencies.
+ * @returns An async function accepting login input and returning a login response.
+ */
+export function createLoginUseCase(deps: AuthenticateUseCaseDeps) {
+  return async (input: LoginInput): Promise<LoginResponse> => {
+    if (!isAuthEnabled(deps.config.adminApiToken)) {
+      return { username: 'admin' };
+    }
+
+    if (!timingSafeCompare(input.token, deps.config.adminApiToken)) {
+      throw new Error('Invalid token');
+    }
+
+    return { username: 'admin' };
+  };
+}
+
+/**
+ * Creates a factory function for the logout use case.
+ *
+ * Always succeeds — the caller is responsible for clearing the session cookie.
+ *
+ * @returns An async function returning a logout response.
+ */
+export function createLogoutUseCase() {
+  return async (): Promise<LogoutResponse> => {
+    return { success: true };
+  };
+}
+
+/**
+ * Creates a factory function for the current-user (me) use case.
+ *
+ * Accepts an already-parsed auth session (from cookie or bearer token) and
+ * returns the user info response. The caller (controller/adapter) is
+ * responsible for extracting the session from the raw HTTP request.
+ *
+ * @param deps - The injected dependencies.
+ * @returns An async function accepting an optional session and returning user info.
+ */
+export function createMeUseCase(deps: AuthenticateUseCaseDeps) {
+  return async (session: AuthSession | null): Promise<UserInfoResponse | null> => {
+    if (!isAuthEnabled(deps.config.adminApiToken)) {
+      return null;
+    }
+
+    if (!session) {
+      return null;
+    }
+
+    return {
+      username: session.username,
+      expiresAt: session.expiresAt?.toISOString() ?? null,
+    };
+  };
+}
@@ -0,0 +1,176 @@
+import type { File } from '../../domain/entities/file';
+import type { IFileRepository } from '../../domain/ports/file-repository';
+import type { ITelegramService, TelegramFileInfo } from '../../domain/ports/telegram-service';
+
+/**
+ * Result type for a simple file-info lookup.
+ */
+export interface FileInfoResult {
+  /** Whether the file was found. */
+  found: true;
+  /** Public unique identifier. */
+  publicId: string;
+  /** Original file name. */
+  fileName: string;
+  /** MIME type. */
+  mimeType: string;
+  /** File size in bytes. */
+  sizeBytes: number;
+  /** Telegram file type (document, photo, video, etc.). */
+  fileType: string;
+  /** ISO-8601 creation timestamp. */
+  createdAt: string;
+}
+
+/**
+ * Result type for a file-not-found lookup.
+ */
+export interface FileNotFoundResult {
+  /** Always `false` for a not-found result. */
+  found: false;
+}
+
+/**
+ * Discriminated union of all possible file-info lookup outcomes.
+ */
+export type GetFileInfoResult = FileInfoResult | FileNotFoundResult;
+
+/**
+ * Describes a redirect-based file retrieval.
+ */
+export interface RedirectRetrieval {
+  /** Discriminant. */
+  type: 'redirect';
+  /** The resolved file entity. */
+  file: File;
+  /** Full Telegram CDN URL to redirect the client to. */
+  redirectUrl: string;
+  /** Cached Telegram file metadata. */
+  fileInfo: TelegramFileInfo;
+}
+
+/**
+ * Describes a chunked file retrieval that needs a multi-part response.
+ */
+export interface ChunkedRetrieval {
+  /** Discriminant. */
+  type: 'chunked';
+  /** The resolved file entity. */
+  file: File;
+}
+
+/**
+ * Describes an archive-entry file retrieval.
+ */
+export interface ArchiveEntryRetrieval {
+  /** Discriminant. */
+  type: 'archive-entry';
+  /** The resolved file entity. */
+  file: File;
+  /** Telegram file metadata for the archive container. */
+  archiveInfo: TelegramFileInfo;
+  /** Name of the entry within the archive. */
+  entryName: string;
+}
+
+/**
+ * Discriminated union of all possible file retrieval outcomes.
+ */
+export type FileRetrievalResult = RedirectRetrieval | ChunkedRetrieval | ArchiveEntryRetrieval;
+
+/** Subset of application configuration consumed by the get-file use case. */
+export interface GetFileConfig {
+  /** Server base URL (used in constructing archive download URLs). */
+  baseUrl: string;
+}
+
+/** Dependencies required by the get-file use case factory. */
+export interface GetFileUseCaseDeps {
+  /** File repository for looking up file records. */
+  fileRepo: IFileRepository;
+  /** Telegram service for resolving file identifiers to download paths. */
+  telegramService: ITelegramService;
+  /** Application configuration subset. */
+  config: GetFileConfig;
+}
+
+/**
+ * Creates a factory function for the get-file info use case.
+ *
+ * Looks up a file by its public identifier and returns its metadata.
+ *
+ * @param deps - The injected dependencies.
+ * @returns An async function accepting a public ID and returning file info.
+ */
+export function createGetFileInfoUseCase(deps: Pick<GetFileUseCaseDeps, 'fileRepo'>) {
+  return async (publicId: string): Promise<GetFileInfoResult> => {
+    const file = await deps.fileRepo.findByPublicId(publicId);
+    if (!file) {
+      return { found: false };
+    }
+
+    return {
+      found: true,
+      publicId: file.publicId,
+      fileName: file.fileName,
+      mimeType: file.mimeType,
+      sizeBytes: file.sizeBytes,
+      fileType: file.fileType,
+      createdAt: formatCreatedAtForInfo(file.createdAt),
+    };
+  };
+}
+
+/**
+ * Formats a date-like value into an ISO-8601 string.
+ *
+ * @param date - A Date instance, date string, or numeric timestamp.
+ * @returns The ISO-8601 string.
+ */
+const formatCreatedAtForInfo = (date: Date | string | number): string => {
+  if (date instanceof Date) return date.toISOString();
+  return new Date(date).toISOString();
+};
+
+/**
+ * Creates a factory function for the get-file retrieval use case.
+ *
+ * Determines how a file should be delivered to the client:
+ * - **redirect**: For regular (non-chunked, non-archive) files — returns a
+ *   Telegram CDN redirect URL.
+ * - **chunked**: For files stored across multiple Telegram parts — returns
+ *   the file entity so the caller can build a multi-part streaming response.
+ * - **archive-entry**: For files stored inside a Telegram archive (zip) —
+ *   returns the archive's Telegram metadata and the entry name so the caller
+ *   can extract and stream the entry.
+ *
+ * @param deps - The injected dependencies.
+ * @returns An async function accepting a public ID and returning a retrieval result.
+ */
+export function createGetFileUseCase(deps: GetFileUseCaseDeps) {
+  return async (publicId: string): Promise<FileRetrievalResult | null> => {
+    const file = await deps.fileRepo.findByPublicId(publicId);
+    if (!file) {
+      return null;
+    }
+
+    // Chunked file — return the entity for multi-part response building
+    if (file.storageBackend === 'chunked') {
+      return { type: 'chunked', file };
+    }
+
+    // Archive entry — resolve the archive's Telegram location
+    const archiveEntryName = file.archiveEntryName;
+    if (archiveEntryName) {
+      const archiveFileId = file.archiveTelegramFileId || file.telegramFileId;
+      const archiveInfo = await deps.telegramService.getFileInfo(archiveFileId);
+      return { type: 'archive-entry', file, archiveInfo, entryName: archiveEntryName };
+    }
+
+    // Regular file — resolve Telegram CDN path for a redirect
+    const fileInfo = await deps.telegramService.getFileInfo(file.telegramFileId);
+    const redirectUrl = `https://api.telegram.org/file/bot${fileInfo.bot_token}/${fileInfo.file_path}`;
+
+    return { type: 'redirect', file, redirectUrl, fileInfo };
+  };
+}
@@ -0,0 +1,156 @@
+import type { Bucket } from '../../domain/entities/bucket';
+import type { IBucketRepository } from '../../domain/ports/bucket-repository';
+import type { IFileRepository } from '../../domain/ports/file-repository';
+
+/**
+ * S3 bucket name validation regex.
+ *
+ * Bucket names must be 3-63 characters, start/end with a lowercase letter or
+ * digit, and contain only lowercase letters, digits, dots, and hyphens.
+ */
+const BUCKET_NAME_REGEX = /^[a-z0-9][a-z0-9.-]{1,61}[a-z0-9]$/;
+
+/**
+ * Error type for bucket-level application errors that carry an S3-compatible
+ * error code and an HTTP status suggestion.
+ */
+export class BucketError extends Error {
+  /** S3-compatible error code (e.g. "NoSuchBucket", "BucketAlreadyExists"). */
+  readonly code: string;
+  /** Suggested HTTP status code. */
+  readonly status: number;
+
+  /**
+   * @param code - The S3 error code.
+   * @param message - Human-readable error description.
+   * @param status - Suggested HTTP status.
+   */
+  constructor(code: string, message: string, status: number) {
+    super(message);
+    this.name = 'BucketError';
+    this.code = code;
+    this.status = status;
+  }
+}
+
+/**
+ * Describes a bucket entry returned by the list-buckets use case,
+ * enriched with the current count of non-deleted objects.
+ */
+export interface BucketWithCount {
+  /** The bucket domain entity. */
+  bucket: Bucket;
+  /** Number of non-deleted objects in the bucket. */
+  objectCount: number;
+}
+
+/** Dependencies required by the manage-bucket use case factories. */
+export interface ManageBucketDeps {
+  /** Bucket repository for CRUD operations. */
+  bucketRepo: IBucketRepository;
+  /** File repository for counting and checking objects within buckets. */
+  fileRepo: IFileRepository;
+}
+
+/**
+ * Creates a use case that lists all buckets together with their object counts.
+ *
+ * @param deps - The injected dependencies.
+ * @returns An async function that returns a list of buckets with counts.
+ */
+export function createListBucketsUseCase(deps: ManageBucketDeps) {
+  return async (): Promise<BucketWithCount[]> => {
+    const buckets = await deps.bucketRepo.list();
+    const results = await Promise.all(
+      buckets.map(async (bucket) => ({
+        bucket,
+        objectCount: await deps.fileRepo.countByBucket(bucket.id),
+      })),
+    );
+    return results;
+  };
+}
+
+/**
+ * Creates a use case that retrieves a single bucket by its name.
+ *
+ * @param deps - The injected dependencies.
+ * @returns An async function accepting a bucket name and returning the
+ *          bucket, or `null` when not found.
+ */
+export function createGetBucketUseCase(deps: ManageBucketDeps) {
+  return async (name: string): Promise<Bucket | null> => {
+    return deps.bucketRepo.findByName(name);
+  };
+}
+
+/**
+ * Creates a use case that creates a new bucket.
+ *
+ * Validates the bucket name format and checks for duplicates before
+ * persisting.
+ *
+ * @param deps - The injected dependencies.
+ * @returns An async function accepting a bucket name and returning the
+ *          newly created bucket.
+ * @throws {BucketError} When the name is invalid or the bucket already exists.
+ */
+export function createCreateBucketUseCase(deps: ManageBucketDeps) {
+  return async (name: string): Promise<Bucket> => {
+    if (!BUCKET_NAME_REGEX.test(name)) {
+      throw new BucketError('InvalidBucketName', 'The specified bucket is not valid.', 400);
+    }
+
+    const existing = await deps.bucketRepo.findByName(name);
+    if (existing) {
+      throw new BucketError(
+        'BucketAlreadyExists',
+        'The requested bucket name is not available.',
+        409,
+      );
+    }
+
+    return deps.bucketRepo.create(name);
+  };
+}
+
+/**
+ * Creates a use case that deletes a bucket.
+ *
+ * Ensures the bucket exists and is empty (no non-deleted objects) before
+ * proceeding with deletion.
+ *
+ * @param deps - The injected dependencies.
+ * @returns An async function accepting a bucket name. Returns `true` when
+ *          the bucket was deleted, throws when the bucket is missing or
+ *          not empty.
+ * @throws {BucketError} When the bucket does not exist or is not empty.
+ */
+export function createDeleteBucketUseCase(deps: ManageBucketDeps) {
+  return async (name: string): Promise<boolean> => {
+    const bucket = await deps.bucketRepo.findByName(name);
+    if (!bucket) {
+      throw new BucketError('NoSuchBucket', 'The specified bucket does not exist.', 404);
+    }
+
+    const objectCount = await deps.fileRepo.countByBucket(bucket.id);
+    if (objectCount > 0) {
+      throw new BucketError('BucketNotEmpty', 'The bucket you tried to delete is not empty.', 409);
+    }
+
+    return deps.bucketRepo.delete(name);
+  };
+}
+
+/**
+ * Creates a use case that checks whether a bucket exists.
+ *
+ * @param deps - The injected dependencies.
+ * @returns An async function accepting a bucket name and returning `true`
+ *          when the bucket exists.
+ */
+export function createBucketExistsUseCase(deps: ManageBucketDeps) {
+  return async (name: string): Promise<boolean> => {
+    return deps.bucketRepo.exists(name);
+  };
+}
@@ -0,0 +1,368 @@
+import { nanoid } from 'nanoid';
+import { buildNewFile } from '../../domain/entities/file-factory';
+import type { MultipartUpload } from '../../domain/entities/multipart';
+import type { IBucketRepository } from '../../domain/ports/bucket-repository';
+import type { IFileRepository } from '../../domain/ports/file-repository';
+import type { IMultipartRepository } from '../../domain/ports/multipart-repository';
+import type { ITelegramService } from '../../domain/ports/telegram-service';
+import { computeHash, DEFAULT_FILE_TYPE } from '../../shared/utils/file';
+
+// ─── Types ──────────────────────────────────────────────────────────
+
+/**
+ * A single part reference as submitted in a complete-multipart-upload request.
+ */
+export interface CompletePartInput {
+  /** 1-based part number. */
+  partNumber: number;
+  /** ETag returned when the part was uploaded. */
+  etag: string;
+}
+
+/**
+ * Result of initiating a multipart upload.
+ */
+export interface InitiateMultipartResult {
+  /** The generated upload identifier (nanoid). */
+  uploadId: string;
+  /** The bucket name. */
+  bucket: string;
+  /** The S3 object key. */
+  key: string;
+}
+
+/**
+ * Result of uploading a single part.
+ */
+export interface UploadPartResult {
+  /** ETag of the uploaded part (SHA-256 hex digest). */
+  etag: string;
+}
+
+/**
+ * Result of completing a multipart upload.
+ */
+export interface CompleteMultipartResult {
+  /** Public-facing unique identifier of the created file record. */
+  publicId: string;
+  /** The S3 location URL of the completed object. */
+  location: string;
+  /** Combined ETag (all part etags joined by hyphens). */
+  etag: string;
+  /** Total object size in bytes. */
+  sizeBytes: number;
+}
+
+/**
+ * Summary of a single part within a multipart upload used in listing results.
+ */
+export interface PartSummary {
+  /** 1-based part number. */
+  partNumber: number;
+  /** ETag of the part content. */
+  etag: string;
+  /** Part size in bytes. */
+  sizeBytes: number;
+  /** ISO-8601 timestamp when the part was stored. */
+  createdAt: Date;
+}
+
+/**
+ * Result of listing multipart uploads within a bucket.
+ */
+export interface ListMultipartUploadsResult {
+  /** Array of in-progress upload summaries. */
+  uploads: MultipartUpload[];
+  /** Whether more results are available. */
+  isTruncated: boolean;
+  /** Marker for the next page, or null when not truncated. */
+  nextKeyMarker: string | null;
+}
+
+// ─── Config ─────────────────────────────────────────────────────────
+
+/** Subset of application configuration consumed by the multipart use cases. */
+export interface MultipartConfig {
+  /** Maximum chunk size in bytes for Telegram uploads (part size limit). */
+  telegramChunkSizeBytes: number;
+  /** Telegram chat ID where part data is stored. */
+  storageChatId: number;
+  /** Server base URL for constructing location URLs. */
+  baseUrl: string;
+}
+
+/** Dependencies required by the multipart upload use case factories. */
+export interface MultipartDeps {
+  /** Bucket repository for bucket lookups. */
+  bucketRepo: IBucketRepository;
+  /** File repository for creating the final file record on completion. */
+  fileRepo: IFileRepository;
+  /** Multipart repository for managing upload sessions and parts. */
+  multipartRepo: IMultipartRepository;
+  /** Telegram service for forwarding part data to storage. */
+  telegramService: ITelegramService;
+  /** Application configuration subset. */
+  config: MultipartConfig;
+}
+
+// ─── Use Case Factories ─────────────────────────────────────────────
+
+/**
+ * Creates a use case that initiates an S3 multipart upload.
+ *
+ * Validates the bucket exists and creates a new multipart upload session.
+ *
+ * @param deps - The injected dependencies.
+ * @returns An async function accepting bucket name and object key, returning
+ *          the upload initiation result, or `null` when the bucket is not found.
+ */
+export function createInitiateMultipartUploadUseCase(deps: MultipartDeps) {
+  return async (bucketName: string, key: string): Promise<InitiateMultipartResult | null> => {
+    const bucket = await deps.bucketRepo.findByName(bucketName);
+    if (!bucket) return null;
+
+    const uploadId = await deps.multipartRepo.create(bucket.id, key, 's3');
+
+    return { uploadId, bucket: bucketName, key };
+  };
+}
+
+/**
+ * Creates a use case that uploads a single part of a multipart upload.
+ *
+ * Validates the part number range (1-10000), checks the upload session exists
+ * and matches the expected key, checks part size against the configured limit,
+ * forwards the part data to Telegram storage, and persists the part record.
+ *
+ * @param deps - The injected dependencies.
+ * @returns An async function accepting upload details and part data, returning
+ *          the part ETag, or `null` when the upload session is not found.
+ */
+export function createUploadPartUseCase(deps: MultipartDeps) {
+  return async (input: {
+    /** Bucket name for the multipart upload. */
+    bucketName: string;
+    /** S3 object key for the multipart upload. */
+    key: string;
+    /** Upload identifier returned by initiate. */
+    uploadId: string;
+    /** 1-based part number (1-10000). */
+    partNumber: number;
+    /** Raw part data. */
+    body: Buffer;
+  }): Promise<UploadPartResult | null> => {
+    if (input.partNumber < 1 || input.partNumber > 10000) {
+      throw new MultipartError(
+        'InvalidArgument',
+        'Part number must be an integer between 1 and 10000',
+        400,
+      );
+    }
+
+    const multipart = await deps.multipartRepo.findById(input.uploadId);
+    if (!multipart || multipart.s3Key !== input.key) {
+      return null;
+    }
+
+    if (input.body.byteLength > deps.config.telegramChunkSizeBytes) {
+      throw new MultipartError(
+        'EntityTooLarge',
+        `Your proposed upload part size (${input.body.byteLength} bytes) exceeds the maximum allowed part size (${deps.config.telegramChunkSizeBytes} bytes) for this storage backend. Use smaller part sizes.`,
+        400,
+      );
+    }
+
+    const forwardResult = await deps.telegramService.forwardToStorage(
+      input.body,
+      `mp-${input.uploadId}-part-${input.partNumber}`,
+      'document',
+    );
+
+    const etag = computeHash(input.body);
+
+    await deps.multipartRepo.insertPart({
+      uploadId: input.uploadId,
+      partNumber: input.partNumber,
+      telegramFileId: forwardResult.telegramFileId,
+      telegramFileUniqueId: forwardResult.telegramFileUniqueId,
+      storageMessageId: forwardResult.storageMessageId,
+      sizeBytes: input.body.byteLength,
+      etag,
+    });
+
+    return { etag: `"${etag}"` };
+  };
+}
+
+/**
+ * Error type for multipart-level application errors.
+ */
+export class MultipartError extends Error {
+  /** S3-compatible error code. */
+  readonly code: string;
+  /** Suggested HTTP status code. */
+  readonly status: number;
+
+  /**
+   * @param code - The S3 error code.
+   * @param message - Human-readable error description.
+   * @param status - Suggested HTTP status.
+   */
+  constructor(code: string, message: string, status: number) {
+    super(message);
+    this.name = 'MultipartError';
+    this.code = code;
+    this.status = status;
+  }
+}
+
+/**
+ * Creates a use case that completes an S3 multipart upload.
+ *
+ * Validates the submitted part list (all parts must be present and in ascending
+ * order), creates the final file record referencing the first part's Telegram
+ * data, marks the upload session as completed, and returns the combined result.
+ *
+ * @param deps - The injected dependencies.
+ * @returns An async function accepting upload details and submitted parts,
+ *          returning the completion result, or `null` when the upload session
+ *          is not found.
+ */
+export function createCompleteMultipartUploadUseCase(deps: MultipartDeps) {
+  return async (input: {
+    /** Bucket name for the multipart upload. */
+    bucketName: string;
+    /** S3 object key for the multipart upload. */
+    key: string;
+    /** Upload identifier. */
+    uploadId: string;
+    /** Parts submitted by the client (in ascending part number order). */
+    parts: CompletePartInput[];
+  }): Promise<CompleteMultipartResult | null> => {
+    const multipart = await deps.multipartRepo.findById(input.uploadId);
+    if (!multipart) return null;
+
+    const storedParts = await deps.multipartRepo.listParts(input.uploadId);
+
+    // Validate ascending part order
+    const partNumbers = input.parts.map((p) => p.partNumber);
+    if (partNumbers.length > 1 && partNumbers.some((n, i) => i > 0 && n <= partNumbers[i - 1])) {
+      throw new MultipartError(
+        'InvalidPartOrder',
+        'The list of parts was not in ascending order.',
+        400,
+      );
+    }
+
+    // Validate part count matches
+    if (input.parts.length !== storedParts.length) {
+      throw new MultipartError(
+        'InvalidPart',
+        'One or more specified parts could not be found.',
+        400,
+      );
+    }
+
+    const totalSize = storedParts.reduce((sum, p) => sum + p.sizeBytes, 0);
+    const firstPart = storedParts[0];
+    if (!firstPart) {
+      throw new MultipartError('InternalError', 'Multipart object has no parts.', 500);
+    }
+
+    const publicId = nanoid();
+
+    await deps.fileRepo.create(
+      buildNewFile({
+        publicId,
+        telegramFileId: firstPart.telegramFileId,
+        telegramFileUniqueId: firstPart.telegramFileUniqueId,
+        storageChatId: deps.config.storageChatId,
+        storageMessageId: firstPart.storageMessageId,
+        fileName: input.key.split('/').pop() || 'file',
+        mimeType: 'application/octet-stream',
+        sizeBytes: totalSize,
+        fileType: DEFAULT_FILE_TYPE,
+        storageBackend: 'telegram',
+        bucketId: multipart.bucketId,
+        s3Key: input.key,
+        multipartUploadId: input.uploadId,
+      }),
+    );
+
+    await deps.multipartRepo.complete(input.uploadId);
+
+    const location = `${deps.config.baseUrl}/${input.bucketName}/${input.key}`;
+    const combinedEtag = storedParts.map((p) => p.etag).join('-');
+
+    return {
+      publicId,
+      location,
+      etag: combinedEtag,
+      sizeBytes: totalSize,
+    };
+  };
+}
+
+/**
+ * Creates a use case that aborts an S3 multipart upload.
+ *
+ * @param deps - The injected dependencies.
+ * @returns An async function accepting an upload identifier, returning `true`
+ *          when the upload was aborted, or `null` when the upload session
+ *          is not found.
+ */
+export function createAbortMultipartUploadUseCase(deps: MultipartDeps) {
+  return async (uploadId: string): Promise<boolean | null> => {
+    const multipart = await deps.multipartRepo.findById(uploadId);
+    if (!multipart) return null;
+
+    await deps.multipartRepo.abort(uploadId);
+    return true;
+  };
+}
+
+/**
+ * Creates a use case that lists in-progress multipart uploads within a bucket.
+ *
+ * @param deps - The injected dependencies.
+ * @returns An async function accepting query parameters and returning the
+ *          listing result, or `null` when the bucket is not found.
+ */
+export function createListMultipartUploadsUseCase(deps: MultipartDeps) {
+  return async (input: {
+    /** Bucket name to list uploads from. */
+    bucketName: string;
+    /** Maximum number of uploads to return (clamped 1-1000). */
+    maxUploads: number;
+    /** Return only uploads whose S3 key is strictly greater than this, or null. */
+    keyMarker: string | null;
+  }): Promise<ListMultipartUploadsResult | null> => {
+    const bucket = await deps.bucketRepo.findByName(input.bucketName);
+    if (!bucket) return null;
+
+    return deps.multipartRepo.listByBucket(bucket.id, input.maxUploads, input.keyMarker);
+  };
+}
+
+/**
+ * Creates a use case that lists parts of a specific multipart upload.
+ *
+ * @param deps - The injected dependencies.
+ * @returns An async function accepting an upload identifier and returning the
+ *          list of parts, or `null` when the upload session is not found.
+ */
+export function createListPartsUseCase(deps: MultipartDeps) {
+  return async (uploadId: string): Promise<PartSummary[] | null> => {
+    const multipart = await deps.multipartRepo.findById(uploadId);
+    if (!multipart) return null;
+
+    const parts = await deps.multipartRepo.listParts(uploadId);
+
+    return parts.map((p) => ({
+      partNumber: p.partNumber,
+      etag: p.etag,
+      sizeBytes: p.sizeBytes,
+      createdAt: p.createdAt,
+    }));
+  };
+}
@@ -0,0 +1,165 @@
+import type { File } from '../../domain/entities/file';
+import type { IBucketRepository } from '../../domain/ports/bucket-repository';
+import type { IFilePartRepository } from '../../domain/ports/file-part-repository';
+import type { IFileRepository } from '../../domain/ports/file-repository';
+import type { IMultipartRepository } from '../../domain/ports/multipart-repository';
+import type { ITelegramService, TelegramFileInfo } from '../../domain/ports/telegram-service';
+import type { CompressionAlgorithm } from '../../shared/utils/compress';
+
+// ─── Types ──────────────────────────────────────────────────────────
+
+/**
+ * A single part source for building a multi-part streaming response.
+ * Each part corresponds to a Telegram-stored file chunk.
+ */
+export interface ObjectPartSource {
+  /** Telegram file identifier for retrieving this part. */
+  telegramFileId: string;
+  /** Telegram CDN URL for downloading this part. */
+  telegramUrl: string;
+  /** Original size of this part in bytes. */
+  sizeBytes: number;
+  /** 1-based part number within the object. */
+  partNumber: number;
+  /** Stored (post-compression) size in bytes, when applicable. */
+  storedSizeBytes?: number;
+  /** Compression algorithm applied, or null if uncompressed. */
+  compressionAlgorithm?: CompressionAlgorithm;
+}
+
+/**
+ * A regular (direct) S3 object resolved to a Telegram CDN URL.
+ */
+export interface DirectObjectResult {
+  /** Discriminant. */
+  type: 'direct';
+  /** The resolved file entity. */
+  file: File;
+  /** Full Telegram CDN URL for downloading the object. */
+  telegramUrl: string;
+  /** Telegram file metadata. */
+  fileInfo: TelegramFileInfo;
+}
+
+/**
+ * A chunked S3 object stored across multiple Telegram file parts.
+ */
+export interface ChunkedObjectResult {
+  /** Discriminant. */
+  type: 'chunked';
+  /** The resolved file entity. */
+  file: File;
+}
+
+/**
+ * An S3 object assembled from a completed multipart upload.
+ */
+export interface MultipartObjectResult {
+  /** Discriminant. */
+  type: 'multipart';
+  /** The resolved file entity. */
+  file: File;
+  /** Resolved part sources with Telegram CDN URLs. */
+  parts: ObjectPartSource[];
+}
+
+/**
+ * Discriminated union of all possible S3 get-object outcomes.
+ */
+export type GetObjectResult = DirectObjectResult | ChunkedObjectResult | MultipartObjectResult;
+
+/**
+ * Result of an S3 put-object operation.
+ */
+export interface PutObjectResult {
+  /** SHA-256 hex digest of the object content. */
+  etag: string;
+}
+
+/**
+ * Result of an S3 copy-object operation.
+ */
+export interface CopyObjectResult {
+  /** SHA-256 hex digest of the source object content. */
+  etag: string;
+  /** ISO-8601 timestamp of the copy operation. */
+  lastModified: string;
+}
+
+/**
+ * A single S3 object as returned in listing results.
+ */
+export interface ListObjectEntry {
+  /** The object key (full path within the bucket). */
+  key: string;
+  /** Object size in bytes. */
+  sizeBytes: number;
+  /** SHA-256 hex digest or fallback identifier. */
+  etag: string;
+  /** ISO-8601 timestamp of last modification. */
+  lastModified: string;
+  /** MIME type of the stored object. */
+  mimeType: string;
+}
+
+/**
+ * Result of an S3 list-objects operation (both V1 and V2).
+ */
+export interface ListObjectsResult {
+  /** Array of object summaries. */
+  objects: ListObjectEntry[];
+  /** Common prefixes when a delimiter was used. */
+  prefixes: string[];
+  /** Whether more results are available. */
+  isTruncated: boolean;
+  /** The last key in the returned page, for use as the next marker. */
+  nextMarker: string | null;
+}
+
+/**
+ * Head-object metadata.
+ */
+export interface HeadObjectMetadata {
+  /** MIME type of the object. */
+  contentType: string;
+  /** Object size in bytes. */
+  contentLength: number;
+  /** Entity tag (SHA-256 hex digest or fallback). */
+  etag: string;
+  /** ISO-8601 timestamp of last modification. */
+  lastModified: string;
+}
+
+// ─── Config ─────────────────────────────────────────────────────────
+
+/** Subset of application configuration consumed by the s3-object use cases. */
+export interface S3ObjectConfig {
+  /** Maximum chunk size in bytes for Telegram chunked uploads. */
+  telegramChunkSizeBytes: number;
+  /** Whether gzip compression is enabled for chunked uploads. */
+  compressChunkedUploads: boolean;
+  /** Minimum chunk size in bytes below which compression is skipped. */
+  chunkCompressionMinSizeBytes: number;
+  /** Telegram chat ID where file parts are stored. */
+  storageChatId: number;
+  /** Server base URL for constructing download links. */
+  baseUrl: string;
+  /** Whether to proxy S3 GET requests through the server. */
+  proxyS3Get: boolean;
+}
+
+/** Dependencies required by the s3-object use case factories. */
+export interface S3ObjectDeps {
+  /** Bucket repository for bucket lookups. */
+  bucketRepo: IBucketRepository;
+  /** File repository for object CRUD operations. */
+  fileRepo: IFileRepository;
+  /** File-part repository for chunked upload part records. */
+  filePartRepo: IFilePartRepository;
+  /** Multipart repository for resolving multipart-upload objects. */
+  multipartRepo: IMultipartRepository;
+  /** Telegram service for uploading and resolving file metadata. */
+  telegramService: ITelegramService;
+  /** Application configuration subset. */
+  config: S3ObjectConfig;
+}
@@ -0,0 +1,165 @@
+import { createReadStream } from 'node:fs';
+import { open } from 'node:fs/promises';
+import { nanoid } from 'nanoid';
+import { buildNewFile } from '../../domain/entities/file-factory';
+import type { IFileRepository } from '../../domain/ports/file-repository';
+import type { ITelegramService } from '../../domain/ports/telegram-service';
+import type { ChunkedStorage } from '../../infrastructure/telegram/chunked-storage';
+import { checkFileSize, ensureExtension, getFileType } from '../../shared/utils/file';
+import type { UploadInput, UploadOutput } from '../dto/upload';
+
+/** Subset of application configuration consumed by the upload-file use case. */
+export interface UploadFileConfig {
+  /** Server base URL for constructing download links. */
+  baseUrl: string;
+  /** Maximum chunk size in bytes for Telegram chunked uploads. */
+  telegramChunkSizeBytes: number;
+  /** Telegram chat ID where file parts are stored. */
+  storageChatId: number;
+  /** Whether to attempt gzip compression on each chunk. */
+  compressChunkedUploads: boolean;
+  /** Minimum chunk size in bytes below which compression is skipped. */
+  chunkCompressionMinSizeBytes: number;
+}
+
+/** Dependencies required by the upload-file use case factory. */
+export interface UploadFileUseCaseDeps {
+  /** File repository for CRUD operations on file records. */
+  fileRepo: IFileRepository;
+  /** Telegram service for forwarding file content to storage. */
+  telegramService: ITelegramService;
+  /** Chunked storage handler for large file uploads. */
+  chunkedStorage: ChunkedStorage;
+  /** Application configuration subset. */
+  config: UploadFileConfig;
+}
+
+/**
+ * Reads the first 16 bytes from a file on disk for magic-byte detection.
+ *
+ * @param tempPath - Absolute path to the temporary file.
+ * @returns A buffer containing up to 16 bytes.
+ */
+const readSignatureBuffer = async (tempPath: string): Promise<Buffer> => {
+  const handle = await open(tempPath, 'r');
+  try {
+    const buf = Buffer.alloc(16);
+    const { bytesRead } = await handle.read(buf, 0, 16, 0);
+    return buf.subarray(0, bytesRead);
+  } finally {
+    await handle.close();
+  }
+};
+
+/**
+ * Creates a factory function for the upload-file use case.
+ *
+ * The returned use case:
+ * 1. Checks for an existing file with the same SHA-256 hash (deduplication).
+ * 2. Normalises the file name and MIME type based on magic bytes.
+ * 3. Validates the file size against Telegram type-specific limits.
+ * 4. Chooses a storage strategy — chunked (delegated to ChunkedStorage) or
+ *    single-message upload.
+ * 5. Persists the file record.
+ * 6. Builds and returns the public `UploadOutput` DTO.
+ *
+ * @param deps - The injected dependencies.
+ * @returns An async function accepting `UploadInput` and returning `UploadOutput`.
+ */
+export function createUploadFileUseCase(deps: UploadFileUseCaseDeps) {
+  return async (input: UploadInput): Promise<UploadOutput> => {
+    // 1. Check deduplication by content hash
+    const existing = await deps.fileRepo.findByHash(input.fileHash);
+    if (existing) {
+      return {
+        publicId: existing.publicId,
+        fileName: existing.fileName,
+        mimeType: existing.mimeType,
+        sizeBytes: existing.sizeBytes,
+        fileType: existing.fileType,
+        createdAt:
+          existing.createdAt instanceof Date ? existing.createdAt : new Date(existing.createdAt),
+        downloadUrl: `${deps.config.baseUrl}/f/${existing.publicId}`,
+      };
+    }
+
+    // 2. Read signature bytes for magic-byte-based extension detection
+    const signatureBuffer = await readSignatureBuffer(input.tempPath);
+
+    const { fileName: finalFileName, mimeType } = ensureExtension(
+      input.fileName,
+      signatureBuffer,
+      input.mimeType,
+    );
+
+    // 3. Determine Telegram file type and validate size
+    const fileType = getFileType(mimeType, finalFileName);
+
+    if (!checkFileSize(input.sizeBytes, fileType)) {
+      throw new Error(`File size exceeds ${fileType} limit`);
+    }
+
+    // 4. Upload — chunked via ChunkedStorage for files above the threshold
+    if (input.sizeBytes > deps.config.telegramChunkSizeBytes) {
+      const uploadedFile = await deps.chunkedStorage.storeFileInTelegramChunks({
+        tempPath: input.tempPath,
+        partFileNamePrefix: `direct-${input.fileHash.slice(0, 16)}`,
+        fileName: finalFileName,
+        mimeType,
+        sizeBytes: input.sizeBytes,
+        fileType,
+        uploaderId: input.uploaderId ?? 0,
+        bucketId: input.bucketId,
+        s3Key: input.s3Key,
+      });
+
+      return {
+        publicId: uploadedFile.publicId,
+        fileName: uploadedFile.fileName,
+        mimeType: uploadedFile.mimeType,
+        sizeBytes: uploadedFile.sizeBytes,
+        fileType: uploadedFile.fileType,
+        createdAt: uploadedFile.createdAt,
+        downloadUrl: `${deps.config.baseUrl}/f/${uploadedFile.publicId}`,
+      };
+    }
+
+    // 5. Single-message upload path
+    const forwardResult = await deps.telegramService.forwardToStorage(
+      createReadStream(input.tempPath),
+      finalFileName,
+      fileType,
+    );
+
+    const singlePublicId = nanoid();
+
+    const createdFile = await deps.fileRepo.create(
+      buildNewFile({
+        publicId: singlePublicId,
+        telegramFileId: forwardResult.telegramFileId,
+        telegramFileUniqueId: forwardResult.telegramFileUniqueId,
+        storageChatId: deps.config.storageChatId,
+        storageMessageId: forwardResult.storageMessageId,
+        fileName: finalFileName,
+        mimeType,
+        sizeBytes: input.sizeBytes,
+        fileType,
+        storageBackend: 'telegram',
+        uploaderId: input.uploaderId,
+        fileHash: input.fileHash,
+        bucketId: input.bucketId,
+        s3Key: input.s3Key,
+      }),
+    );
+
+    return {
+      publicId: createdFile.publicId,
+      fileName: createdFile.fileName,
+      mimeType: createdFile.mimeType,
+      sizeBytes: createdFile.sizeBytes,
+      fileType: createdFile.fileType,
+      createdAt: createdFile.createdAt,
+      downloadUrl: `${deps.config.baseUrl}/f/${createdFile.publicId}`,
+    };
+  };
+}
@@ -1,137 +0,0 @@
-import { nanoid } from 'nanoid';
-import { type Context, Telegraf } from 'telegraf';
-import { db, files as fileSchema } from './db';
-import { findFileByUniqueId } from './db/files';
-import { config } from './env';
-import {
-  detectFileType,
-  extractFileFromMessage,
-  getErrorMessage,
-  getFileSizeLimit,
-  type TelegramMediaMessage,
-} from './utils/file';
-import logger from './utils/logger';
-import { forwardToStorage } from './utils/telegram';
-
-type BotContext = {
-  message: TelegramMediaMessage;
-  from: { id: number };
-  chat?: { id: number };
-  reply: (text: string, extra?: { reply_parameters: { message_id: number } }) => Promise<unknown>;
-};
-
-type MediaEventRegistrar = {
-  on: (events: string[], handler: (ctx: BotContext) => Promise<unknown>) => void;
-};
-
-const replyWithDownloadUrl = async (ctx: BotContext, publicId: string): Promise<void> => {
-  const url = `${config.baseUrl}/f/${publicId}`;
-  await ctx.reply(`File berhasil diupload! 📎\n\nDownload: ${url}`, {
-    reply_parameters: { message_id: ctx.message.message_id },
-  });
-};
-
-export const startBot = async (): Promise<Telegraf<Context>> => {
-  try {
-    const bot = new Telegraf(config.botToken);
-
-    bot.command('start', async (ctx) => {
-      await ctx.reply(
-        `👋 Halo! Kirimkan file (document, photo, video, audio, voice, animation) ke bot ini. ` +
-          `File akan disimpan di private channel dan kamu dapat download link permanen.`,
-      );
-    });
-
-    // Logging middleware must be registered BEFORE the media handler so all events are captured
-    bot.use((ctx, next) => {
-      logger.info('Telegram event received', {
-        type: 'type' in ctx.update ? ctx.update.type : undefined,
-        chat_id: ctx.chat?.id,
-      });
-      return next();
-    });
-
-    const mediaBot = bot as unknown as MediaEventRegistrar;
-    mediaBot.on(
-      ['document', 'photo', 'video', 'audio', 'voice', 'animation', 'sticker', 'video_note'],
-      async (ctx) => {
-        try {
-          const fileType = detectFileType(ctx.message);
-          const fileObj = extractFileFromMessage(ctx.message, fileType);
-          const { file_id, mime_type } = fileObj;
-          const fileSize = fileObj.file_size || 0;
-          const fileName =
-            ctx.message.document?.file_name ||
-            ctx.message.photo?.slice(-1)[0]?.file_name ||
-            ctx.message.video?.file_name ||
-            ctx.message.audio?.file_name ||
-            ctx.message.voice?.file_name ||
-            'file';
-
-          const maxSize = getFileSizeLimit(fileType);
-
-          if (fileSize > maxSize) {
-            return ctx.reply(`File size exceeds ${maxSize / (1024 * 1024)}MB limit`);
-          }
-
-          const existing = await findFileByUniqueId(fileObj.file_unique_id);
-
-          if (existing) {
-            await replyWithDownloadUrl(ctx, existing.publicId);
-            logger.info('Duplicate file detected in bot, returned existing link', {
-              publicId: existing.publicId,
-              fileType,
-              fileName,
-              uploader: ctx.from.id,
-            });
-            return;
-          }
-
-          const result = await forwardToStorage(file_id, fileName, fileType);
-          const publicId = nanoid();
-
-          const uploaded = {
-            publicId: publicId,
-            telegramFileId: result.telegramFileId,
-            telegramFileUniqueId: result.telegramFileUniqueId,
-            storageChatId: config.storageChatId,
-            storageMessageId: result.storageMessageId,
-            fileName: fileName,
-            mimeType: mime_type || 'application/octet-stream',
-            sizeBytes: fileSize,
-            fileType: fileType,
-            uploaderId: ctx.from.id,
-            createdAt: new Date(),
-            updatedAt: new Date(),
-          };
-
-          await db.insert(fileSchema).values(uploaded);
-
-          await replyWithDownloadUrl(ctx, publicId);
-
-          logger.info('File uploaded via bot', {
-            publicId,
-            fileType,
-            fileName,
-            uploader: ctx.from.id,
-          });
-        } catch (error: unknown) {
-          logger.error('Bot file handler error', {
-            error: getErrorMessage(error),
-            chat_id: ctx.chat?.id,
-          });
-          await ctx.reply('❌ Gagal mengupload file. Coba lagi nanti.');
-        }
-      },
-    );
-
-    await bot.launch();
-
-    logger.info('Telegram bot started', { botToken: `${config.botToken?.substring(0, 10)}...` });
-
-    return bot;
-  } catch (error: unknown) {
-    logger.error('Failed to start bot', { error: getErrorMessage(error) });
-    throw error;
-  }
-};
@@ -1,81 +0,0 @@
-import { sql } from 'drizzle-orm';
-import { db } from './index';
-
-export interface Bucket {
-  id: string;
-  name: string;
-  createdAt: Date;
-  updatedAt: Date;
-}
-
-type QueryRow = Record<string, unknown>;
-type QueryResult = QueryRow[];
-
-export const createBucket = async (name: string): Promise<Bucket> => {
-  const result = (await db.execute(
-    sql`INSERT INTO buckets (name) VALUES (${name}) RETURNING id, name, created_at, updated_at`,
-  )) as unknown as QueryResult;
-  const row = result[0]!;
-  return {
-    id: row.id as string,
-    name: row.name as string,
-    createdAt: new Date(row.created_at as string),
-    updatedAt: new Date(row.updated_at as string),
-  };
-};
-
-export const findBucketByName = async (name: string): Promise<Bucket | null> => {
-  const result = (await db.execute(
-    sql`SELECT id, name, created_at, updated_at FROM buckets WHERE name = ${name}`,
-  )) as unknown as QueryResult;
-  if (result.length === 0) return null;
-  const row = result[0]!;
-  return {
-    id: row.id as string,
-    name: row.name as string,
-    createdAt: new Date(row.created_at as string),
-    updatedAt: new Date(row.updated_at as string),
-  };
-};
-
-export const listBuckets = async (): Promise<Bucket[]> => {
-  const result = (await db.execute(
-    sql`SELECT id, name, created_at, updated_at FROM buckets ORDER BY name`,
-  )) as unknown as QueryResult;
-  return result.map((row) => ({
-    id: row.id as string,
-    name: row.name as string,
-    createdAt: new Date(row.created_at as string),
-    updatedAt: new Date(row.updated_at as string),
-  }));
-};
-
-export const deleteBucket = async (name: string): Promise<boolean> => {
-  // Cascade-delete rows that hold FK references to the bucket
-  await db
-    .execute(
-      sql`DELETE FROM multipart_parts WHERE upload_id IN (SELECT upload_id FROM multipart_uploads WHERE bucket_id IN (SELECT id FROM buckets WHERE name = ${name}))`,
-    )
-    .catch(() => {});
-  await db
-    .execute(
-      sql`DELETE FROM multipart_uploads WHERE bucket_id IN (SELECT id FROM buckets WHERE name = ${name})`,
-    )
-    .catch(() => {});
-  await db
-    .execute(
-      sql`DELETE FROM files WHERE bucket_id IN (SELECT id FROM buckets WHERE name = ${name})`,
-    )
-    .catch(() => {});
-  const result = (await db.execute(
-    sql`DELETE FROM buckets WHERE name = ${name}`,
-  )) as unknown as QueryResult;
-  return result.length > 0;
-};
-
-export const bucketExists = async (name: string): Promise<boolean> => {
-  const result = (await db.execute(
-    sql`SELECT 1 FROM buckets WHERE name = ${name}`,
-  )) as unknown as QueryResult;
-  return result.length > 0;
-};
@@ -1,97 +0,0 @@
-import { sql } from 'drizzle-orm';
-import { db } from './index';
-
-export type CompressionAlgorithm = 'gzip' | null;
-
-export interface FilePart {
-  id: number;
-  fileId: string;
-  partNumber: number;
-  telegramFileId: string;
-  telegramFileUniqueId: string;
-  storageChatId: number;
-  storageMessageId: number;
-  sizeBytes: number;
-  storedSizeBytes: number;
-  compressionAlgorithm: CompressionAlgorithm;
-  etag: string;
-  createdAt: Date;
-}
-
-export type NewFilePartInput = Omit<FilePart, 'id' | 'createdAt'>;
-
-const toNumber = (value: unknown): number => Number(value ?? 0);
-
-const mapRowToFilePart = (row: Record<string, unknown>): FilePart => ({
-  id: toNumber(row.id),
-  fileId: row.file_id as string,
-  partNumber: toNumber(row.part_number),
-  telegramFileId: row.telegram_file_id as string,
-  telegramFileUniqueId: row.telegram_file_unique_id as string,
-  storageChatId: toNumber(row.storage_chat_id),
-  storageMessageId: toNumber(row.storage_message_id),
-  sizeBytes: toNumber(row.size_bytes),
-  storedSizeBytes: toNumber(row.stored_size_bytes),
-  compressionAlgorithm: (row.compression_algorithm as CompressionAlgorithm) || null,
-  etag: row.etag as string,
-  createdAt: new Date(row.created_at as string),
-});
-
-export const insertFileParts = async (parts: NewFilePartInput[]): Promise<void> => {
-  for (const part of parts) {
-    await db.execute(
-      sql`INSERT INTO file_parts (
-        file_id,
-        part_number,
-        telegram_file_id,
-        telegram_file_unique_id,
-        storage_chat_id,
-        storage_message_id,
-        size_bytes,
-        stored_size_bytes,
-        compression_algorithm,
-        etag
-      ) VALUES (
-        ${part.fileId}::uuid,
-        ${part.partNumber},
-        ${part.telegramFileId},
-        ${part.telegramFileUniqueId},
-        ${part.storageChatId},
-        ${part.storageMessageId},
-        ${part.sizeBytes},
-        ${part.storedSizeBytes},
-        ${part.compressionAlgorithm},
-        ${part.etag}
-      )`,
-    );
-  }
-};
-
-export const listFileParts = async (fileId: string): Promise<FilePart[]> => {
-  const result = (await db.execute(
-    sql`SELECT id,
-      file_id,
-      part_number,
-      telegram_file_id,
-      telegram_file_unique_id,
-      storage_chat_id,
-      storage_message_id,
-      size_bytes,
-      stored_size_bytes,
-      compression_algorithm,
-      etag,
-      created_at
-    FROM file_parts
-    WHERE file_id = ${fileId}::uuid
-    ORDER BY part_number`,
-  )) as unknown as Record<string, unknown>[];
-
-  return result.map(mapRowToFilePart);
-};
-
-export const countFileParts = async (fileId: string): Promise<number> => {
-  const result = (await db.execute(
-    sql`SELECT COUNT(*) AS count FROM file_parts WHERE file_id = ${fileId}::uuid`,
-  )) as unknown as Record<string, unknown>[];
-  return toNumber(result[0]?.count);
-};
@@ -1,143 +0,0 @@
-import { and, eq, sql } from 'drizzle-orm';
-import { db, files as fileSchema } from './index';
-import type { File } from './schema';
-
-export interface S3FileRecord extends File {
-  bucketId: string;
-  s3Key: string;
-}
-
-export const findFileByBucketAndKey = async (
-  bucketId: string,
-  s3Key: string,
-): Promise<File | null> => {
-  const result = await db
-    .select()
-    .from(fileSchema)
-    .where(
-      and(
-        eq(fileSchema.bucketId, bucketId),
-        eq(fileSchema.s3Key, s3Key),
-        eq(fileSchema.isDeleted, false),
-      ),
-    )
-    .limit(1);
-  return result[0] || null;
-};
-
-const mapDbRowToS3Record = (row: Record<string, unknown>): S3FileRecord => {
-  return {
-    id: row.id as string,
-    publicId: row.public_id as string,
-    telegramFileId: row.telegram_file_id as string,
-    telegramFileUniqueId: row.telegram_file_unique_id as string,
-    storageChatId: toNumber(row.storage_chat_id),
-    storageMessageId: toNumber(row.storage_message_id),
-    fileName: row.file_name as string,
-    mimeType: row.mime_type as string,
-    sizeBytes: toNumber(row.size_bytes),
-    fileType: row.file_type as string,
-    uploaderId: toNumber(row.uploader_id),
-    fileHash: row.file_hash as string | null,
-    archiveTelegramFileId: row.archive_telegram_file_id as string | null,
-    archiveStorageMessageId:
-      row.archive_storage_message_id === null ? null : toNumber(row.archive_storage_message_id),
-    archiveFileName: row.archive_file_name as string | null,
-    archiveEntryName: row.archive_entry_name as string | null,
-    archiveMimeType: row.archive_mime_type as string | null,
-    archiveSizeBytes: row.archive_size_bytes === null ? null : toNumber(row.archive_size_bytes),
-    bucketId: row.bucket_id as string,
-    s3Key: row.s3_key as string,
-    storageBackend: (row.storage_backend as string) || 'telegram',
-    isDeleted: row.is_deleted as boolean,
-    multipartUploadId: row.multipart_upload_id as string | null,
-    partCount:
-      row.part_count === null || row.part_count === undefined ? null : toNumber(row.part_count),
-    createdAt: new Date(row.created_at as string),
-    updatedAt: new Date(row.updated_at as string),
-  };
-};
-
-const escapeLike = (s: string): string => s.replace(/[%_\\]/g, '\\$&');
-
-const toNumber = (value: unknown): number => Number(value ?? 0);
-
-export const listObjectsByPrefix = async (
-  bucketId: string,
-  prefix: string,
-  delimiter: string | null,
-  maxKeys: number,
-  startAfter: string | null,
-): Promise<{ objects: S3FileRecord[]; prefixes: string[] }> => {
-  let query = prefix
-    ? sql`SELECT * FROM files WHERE bucket_id = ${bucketId}::uuid AND is_deleted = false AND s3_key LIKE ${`${escapeLike(prefix)}%`}`
-    : sql`SELECT * FROM files WHERE bucket_id = ${bucketId}::uuid AND is_deleted = false`;
-
-  if (startAfter) {
-    query = sql`${query} AND s3_key > ${startAfter}`;
-  }
-
-  query = sql`${query} ORDER BY s3_key LIMIT ${maxKeys + 1}`;
-
-  const rawResult = (await db.execute(query)) as unknown as Record<string, unknown>[];
-
-  if (delimiter === '/') {
-    const prefixSet = new Set<string>();
-    const objects: S3FileRecord[] = [];
-
-    for (const row of rawResult) {
-      const s3Key = row.s3_key as string;
-      const relativeKey = s3Key.substring(prefix.length);
-      const slashIndex = relativeKey.indexOf('/');
-      if (slashIndex >= 0) {
-        const folderPrefix = prefix + relativeKey.substring(0, slashIndex + 1);
-        if (folderPrefix !== prefix) {
-          prefixSet.add(folderPrefix);
-        }
-      } else {
-        objects.push(mapDbRowToS3Record(row));
-      }
-    }
-
-    return {
-      objects: objects.slice(0, maxKeys),
-      prefixes: Array.from(prefixSet).sort(),
-    };
-  }
-
-  return {
-    objects: rawResult.slice(0, maxKeys).map(mapDbRowToS3Record),
-    prefixes: [],
-  };
-};
-
-export const softDeleteFile = async (bucketId: string, s3Key: string): Promise<boolean> => {
-  const result = (await db.execute(
-    sql`UPDATE files SET is_deleted = true WHERE bucket_id = ${bucketId}::uuid AND s3_key = ${s3Key} RETURNING id`,
-  )) as unknown as Record<string, unknown>[];
-  return result.length > 0;
-};
-
-export const softDeleteFilesBatch = async (bucketId: string, keys: string[]): Promise<number> => {
-  let deleted = 0;
-  for (const key of keys) {
-    const ok = await softDeleteFile(bucketId, key);
-    if (ok) deleted++;
-  }
-  return deleted;
-};
-
-export const countBucketObjects = async (bucketId: string): Promise<number> => {
-  const result = (await db.execute(
-    sql`SELECT count(*) as count FROM files WHERE bucket_id = ${bucketId}::uuid AND is_deleted = false`,
-  )) as unknown as Record<string, unknown>[];
-  return Number(result[0]?.count || 0);
-};
-
-export const findOrphanFilesByBucket = async (bucketId: string): Promise<File[]> => {
-  return await db
-    .select()
-    .from(fileSchema)
-    .where(and(eq(fileSchema.bucketId, bucketId), eq(fileSchema.isDeleted, true)))
-    .limit(100);
-};
@@ -1,26 +0,0 @@
-import { eq } from 'drizzle-orm';
-import { db, files as fileSchema } from './index';
-import type { File } from './schema';
-
-export const findFileByHash = async (hash: string): Promise<File | null> => {
-  const result = await db.select().from(fileSchema).where(eq(fileSchema.fileHash, hash)).limit(1);
-  return result[0] || null;
-};
-
-export const findFileByPublicId = async (publicId: string): Promise<File | null> => {
-  const result = await db
-    .select()
-    .from(fileSchema)
-    .where(eq(fileSchema.publicId, publicId))
-    .limit(1);
-  return result[0] || null;
-};
-
-export const findFileByUniqueId = async (telegramFileUniqueId: string): Promise<File | null> => {
-  const result = await db
-    .select()
-    .from(fileSchema)
-    .where(eq(fileSchema.telegramFileUniqueId, telegramFileUniqueId))
-    .limit(1);
-  return result[0] || null;
-};
@@ -1,129 +0,0 @@
-import { sql } from 'drizzle-orm';
-import { nanoid } from 'nanoid';
-import { db } from './index';
-
-export interface MultipartUpload {
-  uploadId: string;
-  bucketId: string;
-  s3Key: string;
-  initiatedAt: Date;
-  status: string;
-  initiatedBy: string;
-}
-
-export interface MultipartPart {
-  id: number;
-  uploadId: string;
-  partNumber: number;
-  telegramFileId: string;
-  telegramFileUniqueId: string;
-  storageMessageId: number;
-  sizeBytes: number;
-  etag: string;
-  createdAt: Date;
-}
-
-export const createMultipartUpload = async (
-  bucketId: string,
-  s3Key: string,
-  initiatedBy: string,
-): Promise<string> => {
-  const uploadId = nanoid(32);
-  await db.execute(
-    sql`INSERT INTO multipart_uploads (upload_id, bucket_id, s3_key, initiated_by) VALUES (${uploadId}, ${bucketId}, ${s3Key}, ${initiatedBy})`,
-  );
-  return uploadId;
-};
-
-export const findMultipartUpload = async (uploadId: string): Promise<MultipartUpload | null> => {
-  const result = (await db.execute(
-    sql`SELECT upload_id, bucket_id, s3_key, initiated_at, status FROM multipart_uploads WHERE upload_id = ${uploadId} AND status = 'in_progress'`,
-  )) as unknown as Record<string, unknown>[];
-  if (result.length === 0) return null;
-  const r = result[0]!;
-  return {
-    uploadId: r.upload_id as string,
-    bucketId: r.bucket_id as string,
-    s3Key: r.s3_key as string,
-    initiatedAt: new Date(r.initiated_at as string),
-    status: r.status as string,
-    initiatedBy: '',
-  };
-};
-
-export const completeMultipartUpload = async (uploadId: string): Promise<void> => {
-  await db.execute(
-    sql`UPDATE multipart_uploads SET status = 'completed' WHERE upload_id = ${uploadId}`,
-  );
-};
-
-export const abortMultipartUpload = async (uploadId: string): Promise<void> => {
-  await db.execute(
-    sql`UPDATE multipart_uploads SET status = 'aborted' WHERE upload_id = ${uploadId}`,
-  );
-  // Parts are cascade-deleted by FK
-};
-
-export const insertMultipartPart = async (
-  part: Omit<MultipartPart, 'id' | 'createdAt'>,
-): Promise<void> => {
-  await db.execute(
-    sql`INSERT INTO multipart_parts (upload_id, part_number, telegram_file_id, telegram_file_unique_id, storage_message_id, size_bytes, etag)
-        VALUES (${part.uploadId}, ${part.partNumber}, ${part.telegramFileId}, ${part.telegramFileUniqueId}, ${part.storageMessageId}, ${part.sizeBytes}, ${part.etag})`,
-  );
-};
-
-export const listMultipartParts = async (uploadId: string): Promise<MultipartPart[]> => {
-  const result = (await db.execute(
-    sql`SELECT id, upload_id, part_number, telegram_file_id, telegram_file_unique_id, storage_message_id, size_bytes, etag, created_at
-        FROM multipart_parts WHERE upload_id = ${uploadId} ORDER BY part_number`,
-  )) as unknown as Record<string, unknown>[];
-  return result.map((r) => ({
-    id: r.id as number,
-    uploadId: r.upload_id as string,
-    partNumber: r.part_number as number,
-    telegramFileId: r.telegram_file_id as string,
-    telegramFileUniqueId: r.telegram_file_unique_id as string,
-    storageMessageId: r.storage_message_id as number,
-    sizeBytes: Number(r.size_bytes),
-    etag: r.etag as string,
-    createdAt: new Date(r.created_at as string),
-  }));
-};
-
-const mapRowToMultipartUpload = (r: Record<string, unknown>): MultipartUpload => ({
-  uploadId: r.upload_id as string,
-  bucketId: r.bucket_id as string,
-  s3Key: r.s3_key as string,
-  initiatedAt: new Date(r.initiated_at as string),
-  status: r.status as string,
-  initiatedBy: (r.initiated_by as string | null) || '',
-});
-
-export const listMultipartUploadsByBucket = async (
-  bucketId: string,
-  maxUploads: number,
-  keyMarker: string | null,
-): Promise<{ uploads: MultipartUpload[]; isTruncated: boolean; nextKeyMarker: string | null }> => {
-  const limit = Math.min(Math.max(maxUploads || 1000, 1), 1000);
-  const result = (await db.execute(
-    keyMarker
-      ? sql`SELECT upload_id, bucket_id, s3_key, initiated_at, status, initiated_by
-          FROM multipart_uploads
-          WHERE bucket_id = ${bucketId}::uuid AND status = 'in_progress' AND s3_key > ${keyMarker}
-          ORDER BY s3_key, initiated_at
-          LIMIT ${limit + 1}`
-      : sql`SELECT upload_id, bucket_id, s3_key, initiated_at, status, initiated_by
-          FROM multipart_uploads
-          WHERE bucket_id = ${bucketId}::uuid AND status = 'in_progress'
-          ORDER BY s3_key, initiated_at
-          LIMIT ${limit + 1}`,
-  )) as unknown as Record<string, unknown>[];
-
-  const uploads = result.slice(0, limit).map(mapRowToMultipartUpload);
-  return {
-    uploads,
-    isTruncated: result.length > limit,
-    nextKeyMarker: result.length > limit ? uploads.at(-1)?.s3Key || null : null,
-  };
-};
--- a/Show More
+++ b/Show More