feat: v0.3.0 — standardize codebase, centralize infra, merge QR into CMS

- Enforce axum best practices across all 13 workspace crates
  (max 200 LOC/file, no comments, no unwrap, clean architecture)
- Fix domain→infrastructure dependency inversions in imphnen-iam and imphnen-dimentorin
- Extract imphnen-storage (MinIO) and imphnen-email (Lettre) as standalone crates
- Centralize all config in ENV struct: CDN_URL, CORS_ALLOWED_ORIGINS
- Centralize SMTP through imphnen-email; remove dead HackathonConfig
- Centralize database: QR crate now shares main DB pool (single DATABASE_URL)
- Rename QR users table to qr_users to avoid collision with main users table
- Merge imphnen-qr into imphnen-cms/src/qr (13 crates, down from 14)
- Restructure imphnen-hackathon flat modules into clean architecture
- Remove all stale env vars from .env.example (SurrealDB, QR_JWT, Hackathon infra)
- Fix Dockerfile to include all current workspace crates
- Bump all crate versions 0.2.0 → 0.3.0

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Cargo.lock

@@ -1720,7 +1720,7 @@ checksum = "e7c5cedc30da3a610cac6b4ba17597bdf7152cf974e8aab3afb3d54455e371c8"
 
 [[package]]
 name = "imphnen-backend"
-version = "0.2.0"
+version = "0.3.0"
 dependencies = [
  "anyhow",
  "axum",
@@ -1752,13 +1752,14 @@ dependencies = [
 
 [[package]]
 name = "imphnen-cms"
-version = "0.2.0"
+version = "0.3.0"
 dependencies = [
  "anyhow",
  "async-trait",
  "axum",
  "axum-test",
  "chrono",
+ "image",
  "imphnen-entities",
  "imphnen-iam",
  "imphnen-libs",
@@ -1769,11 +1770,13 @@ dependencies = [
  "paginator-rs",
  "paginator-sea-orm",
  "paginator-utils",
+ "qrcode",
  "rand 0.9.2",
  "regex",
  "sea-orm",
  "serde",
  "serde_json",
+ "sqlx",
  "tokio",
  "tower-http",
  "tracing",
@@ -1786,7 +1789,7 @@ dependencies = [
 
 [[package]]
 name = "imphnen-dimentorin"
-version = "0.2.0"
+version = "0.3.0"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -1820,9 +1823,18 @@ dependencies = [
  "zod-rs-util",
 ]
 
+[[package]]
+name = "imphnen-email"
+version = "0.3.0"
+dependencies = [
+ "imphnen-libs",
+ "lettre",
+ "tracing",
+]
+
 [[package]]
 name = "imphnen-entities"
-version = "0.2.0"
+version = "0.3.0"
 dependencies = [
  "anyhow",
  "axum",
@@ -1840,7 +1852,7 @@ dependencies = [
 
 [[package]]
 name = "imphnen-gacha"
-version = "0.2.0"
+version = "0.3.0"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -1875,7 +1887,7 @@ dependencies = [
 
 [[package]]
 name = "imphnen-gateway"
-version = "0.2.0"
+version = "0.3.0"
 dependencies = [
  "anyhow",
  "axum",
@@ -1889,7 +1901,7 @@ dependencies = [
  "imphnen-iam",
  "imphnen-libs",
  "imphnen-middleware",
- "imphnen-qr",
+ "imphnen-storage",
  "imphnen-utils",
  "lazy_static",
  "rand 0.9.2",
@@ -1905,15 +1917,15 @@ dependencies = [
 
 [[package]]
 name = "imphnen-hackathon"
-version = "0.2.0"
+version = "0.3.0"
 dependencies = [
  "async-trait",
  "axum",
  "base64",
  "chrono",
  "imphnen-libs",
+ "imphnen-storage",
  "imphnen-utils",
- "lettre",
  "reqwest",
  "sea-orm",
  "serde",
@@ -1928,7 +1940,7 @@ dependencies = [
 
 [[package]]
 name = "imphnen-iam"
-version = "0.2.0"
+version = "0.3.0"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -1938,8 +1950,10 @@ dependencies = [
  "chrono",
  "dotenvy",
  "http-body-util",
+ "imphnen-email",
  "imphnen-entities",
  "imphnen-libs",
+ "imphnen-storage",
  "imphnen-utils",
  "lazy_static",
  "log",
@@ -1971,21 +1985,17 @@ dependencies = [
 
 [[package]]
 name = "imphnen-libs"
-version = "0.2.0"
+version = "0.3.0"
 dependencies = [
  "anyhow",
  "argon2",
  "async-trait",
  "axum",
- "base64",
  "chrono",
  "dotenvy",
  "env_logger",
- "hex",
- "hmac",
  "imphnen-entities",
  "jsonwebtoken",
- "lettre",
  "log",
  "num_cpus",
  "once_cell",
@@ -1993,19 +2003,17 @@ dependencies = [
  "sea-orm",
  "serde",
  "serde_json",
- "sha2",
  "thiserror 2.0.17",
  "tokio",
  "tracing",
  "tracing-subscriber",
- "urlencoding",
  "uuid",
  "zod-rs",
 ]
 
 [[package]]
 name = "imphnen-macros"
-version = "0.2.0"
+version = "0.3.0"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -2014,7 +2022,7 @@ dependencies = [
 
 [[package]]
 name = "imphnen-middleware"
-version = "0.2.0"
+version = "0.3.0"
 dependencies = [
  "anyhow",
  "axum",
@@ -2042,28 +2050,25 @@ dependencies = [
 ]
 
 [[package]]
-name = "imphnen-qr"
-version = "0.2.0"
+name = "imphnen-storage"
+version = "0.3.0"
 dependencies = [
- "async-trait",
- "axum",
+ "anyhow",
+ "base64",
  "chrono",
- "image",
+ "hex",
+ "hmac",
  "imphnen-libs",
- "imphnen-utils",
- "qrcode",
- "serde",
- "serde_json",
- "sqlx",
- "tokio",
+ "reqwest",
+ "sha2",
  "tracing",
- "utoipa",
+ "urlencoding",
  "uuid",
 ]
 
 [[package]]
 name = "imphnen-utils"
-version = "0.2.0"
+version = "0.3.0"
 dependencies = [
  "anyhow",
  "axum",