feat: implement togglable debug log streaming for server stdout/stderr and client console logs

- Created server/utils/logCapture.js to intercept and buffer server output, stripping ANSI escape codes.
- Created server/middleware/logStreamAuth.js enforcing subnet IP filtering (LOG_ALLOW_SUBNETS), Emby session cookie, Basic Auth fallback, and X-Webhook-Secret header bypass.
- Created server/routes/debug.js with SSE streams /api/debug/server-logs, /api/debug/client-logs and batched POST /api/debug/client-logs. Exposes public configuration status at /api/debug/status.
- Integrated log capture and mounted debug routes in server/app.js and server/index.js.
- Implemented client/src/utils/clientLogCapture.js in the frontend SPA to hook console log/warn/error and flush batched console events.
- Documented all endpoints in OpenAPI server/openapi.yaml, ARCHITECTURE.md, and README.md.
- Wrote route integration tests and frontend console capture tests, with full validation in swagger-coverage.

server/index.js

@@ -13,6 +13,8 @@ const swaggerJsdoc = require('swagger-jsdoc');
 const YAML = require('yamljs');
 require('dotenv').config();
 require('./utils/loadSecrets')();
+const logCapture = require('./utils/logCapture');
+logCapture.init();
 const { version } = require('../package.json');
 
 // Setup logging with levels
@@ -90,6 +92,7 @@ const historyRoutes = require('./routes/history');
 const authRoutes = require('./routes/auth');
 const webhookRoutes = require('./routes/webhook');
 const ombiRoutes = require('./routes/ombi');
+const debugRoutes = require('./routes/debug');
 const verifyCsrf = require('./middleware/verifyCsrf');
 const { startPoller, POLL_INTERVAL, POLLING_ENABLED } = require('./utils/poller');
 const { validateInstanceUrl } = require('./utils/config');
@@ -367,6 +370,7 @@ function serveIndex(req, res) {
 app.use('/api', apiLimiter);
 app.use('/api/auth', authRoutes);
 app.use('/api/webhook', webhookRoutes);
+app.use('/api/debug', debugRoutes);
 
 // All routes below this point require CSRF validation on mutating methods
 app.use('/api', verifyCsrf);