feat(db): migrate from lowdb to SQLite with repos pattern

- Add modular DB layer (adapters, migrations, repos, helpers)
- Replace localDb/usageDb/requestDetailsDb monoliths with repos
- Add Tailscale tunnel integration & status check API
- Add /api/cli-tools/all-statuses aggregated endpoint
- Add settingsStore (Zustand) and mitm/dbReader
- Add DB unit tests (benchmark, concurrent, migration, vs-lowdb)

src/shared/components/RequestLogger.js

@@ -114,7 +114,7 @@ export default function RequestLogger() {
         </div>
       </Card>
       <div className="text-[10px] text-text-muted italic">
-        Logs are saved to log.txt in the application data directory.
+        Logs are loaded from the request history database.
       </div>
     </div>
   );

src/shared/components/Sidebar.js

@@ -51,7 +51,7 @@ export default function Sidebar({ onClose }) {
   const { copied, copy } = useCopyToClipboard(2000);
 
   const INSTALL_CMD = UPDATER_CONFIG.installCmd;
-  const STATUS_URL = `http://localhost:${UPDATER_CONFIG.statusPort}/update/status`;
+  const STATUS_URL = `http://127.0.0.1:${UPDATER_CONFIG.statusPort}/update/status`;
 
   useEffect(() => {
     fetch("/api/settings")

src/shared/constants/config.js

@@ -2,7 +2,7 @@ import pkg from "../../../package.json" with { type: "json" };
 
 // App configuration
 export const APP_CONFIG = {
-  name: "9Router proxy",
+  name: "9Router Proxy",
   description: "AI Infrastructure Management",
   version: pkg.version,
 };
@@ -56,6 +56,9 @@ export const CONSOLE_LOG_CONFIG = {
   pollIntervalMs: 1000,
 };
 
+// Client-side store TTL: how long fetched data stays fresh before re-fetching
+export const CLIENT_STORE_TTL_MS = 60000;
+
 // Provider API endpoints (for display only)
 export const PROVIDER_ENDPOINTS = {
   openrouter: "https://openrouter.ai/api/v1/chat/completions",

src/shared/services/cloudSyncScheduler.js

@@ -4,7 +4,7 @@ import { isCloudEnabled } from "@/lib/localDb";
 const INTERNAL_BASE_URL =
   process.env.BASE_URL ||
   process.env.NEXT_PUBLIC_BASE_URL ||
-  "http://localhost:20128";
+  "http://127.0.0.1:20128";
 
 /**
  * Cloud sync scheduler