feat: enhance backlog sync logging and implement UI state persistence

src/moderation/backlogSync.ts

@@ -90,14 +90,27 @@ export async function syncBacklogMessages(
   }
 
   const cutoffTime = Date.now() - config.BACKLOG_SYNC_HOURS * 60 * 60 * 1000;
-  await guild.channels.fetch().catch(() => null);
+  logger.info(
+    { guildId: guild.id, hours: config.BACKLOG_SYNC_HOURS },
+    "Starting message backlog sync",
+  );
 
+  logger.info({ guildId: guild.id }, "Fetching guild channels for backlog sync");
+  await guild.channels.fetch().catch((error) => {
+    logger.warn(
+      { guildId: guild.id, error: error instanceof Error ? error.message : String(error) },
+      "Failed to fetch guild channels before backlog sync",
+    );
+    return null;
+  });
+
+  logger.info({ guildId: guild.id }, "Collecting watchable channels for backlog sync");
   const channels = await collectWatchableChannels(guild);
 
   let total = 0;
   logger.info(
     { guildId: guild.id, channels: channels.length, hours: config.BACKLOG_SYNC_HOURS },
-    "Starting message backlog sync",
+    "Watchable channels collected for backlog sync",
   );
 
   for (const channel of channels) {

src/muxer-queue.ts

@@ -108,6 +108,12 @@ function initializeDatabase(): SqliteDatabase {
     CREATE INDEX IF NOT EXISTS idx_attachments_channel ON attachments(channel_id);
     CREATE INDEX IF NOT EXISTS idx_attachments_message ON attachments(message_id);
     CREATE INDEX IF NOT EXISTS idx_attachments_status ON attachments(upload_status);
+
+    CREATE TABLE IF NOT EXISTS ui_state (
+      key TEXT PRIMARY KEY,
+      value TEXT NOT NULL,
+      updated_at INTEGER NOT NULL
+    );
   `);
 
   const migrations = [
@@ -141,6 +147,28 @@ function getDatabase(): SqliteDatabase {
 
 export { getDatabase };
 
+export function getPersistedValue<T>(key: string, fallback: T): T {
+  const row = getDatabase()
+    .prepare("SELECT value FROM ui_state WHERE key = ?")
+    .get(key) as { value: string } | undefined;
+  if (!row) return fallback;
+  try {
+    return JSON.parse(row.value) as T;
+  } catch {
+    return fallback;
+  }
+}
+
+export function setPersistedValue(key: string, value: unknown): void {
+  getDatabase()
+    .prepare(`
+      INSERT INTO ui_state (key, value, updated_at)
+      VALUES (?, ?, ?)
+      ON CONFLICT(key) DO UPDATE SET value = excluded.value, updated_at = excluded.updated_at
+    `)
+    .run(key, JSON.stringify(value), Date.now());
+}
+
 export async function enqueueMuxerJob(data: MuxerJobData): Promise<string> {
   try {
     const database = getDatabase();

src/webserver.ts

@@ -3,7 +3,6 @@ import express from "express";
 import helmet from "helmet";
 import http from "http";
 import path from "path";
-import pinoHttp from "pino-http";
 import * as prism from "prism-media";
 import { WebSocketServer } from "ws";
 import { AppError } from "./errors";
@@ -11,7 +10,7 @@ import { createChildLogger, logger } from "./logger";
 import { getMetrics, uptimeGauge } from "./metrics";
 import { discordPlayer } from "./player";
 import type { VoiceController } from "./voiceController";
-import { getDatabase } from "./muxer-queue";
+import { getDatabase, getPersistedValue, setPersistedValue } from "./muxer-queue";
 import { getMessagesByChannel, getAttachmentsByChannel } from "./moderation/messageStore";
 
 const wsLogger = createChildLogger("webserver");
@@ -31,7 +30,7 @@ interface SharedUIState {
   isStreaming: boolean;
 }
 
-const sharedUIState: SharedUIState = {
+const defaultSharedUIState: SharedUIState = {
   selectedGuild: "",
   selectedVoiceChannel: "",
   selectedTextChannel: "",
@@ -40,6 +39,8 @@ const sharedUIState: SharedUIState = {
   isStreaming: false,
 };
 
+const sharedUIState: SharedUIState = getPersistedValue("web-ui-state", defaultSharedUIState);
+
 function getSharedUIState(): SharedUIState {
   return { ...sharedUIState };
 }
@@ -73,6 +74,7 @@ function patchSharedUIState(patch: Partial<SharedUIState>) {
   if (typeof patch.isStreaming === "boolean") {
     sharedUIState.isStreaming = patch.isStreaming;
   }
+  setPersistedValue("web-ui-state", sharedUIState);
   broadcastUIState();
   return getSharedUIState();
 }
@@ -121,8 +123,21 @@ export function startWebserver(
     }),
   );
 
-  // HTTP request logging
-  app.use(pinoHttp({ logger }));
+  app.use((req, res, next) => {
+    if (req.path.startsWith("/api/")) {
+      res.set("Cache-Control", "no-store");
+    }
+    res.on("finish", () => {
+      if (req.originalUrl.startsWith("/.well-known/appspecific/")) return;
+      if (res.statusCode >= 400) {
+        logger.error(
+          { method: req.method, url: req.originalUrl, statusCode: res.statusCode },
+          "HTTP request failed",
+        );
+      }
+    });
+    next();
+  });
   app.use(express.json());
 
   app.use(express.static(path.join(__dirname, "../public")));