feat: make chat file references clickable and responsive (#587)

* docs: clarify named and quick Cloudflare tunnel usage

* feat: make chat file paths openable from rendered responses

* perf: speed up chat file-path links and open behavior

* fix: open chat file references at mentioned lines

* fix: prevent context panel flicker on blocked file opens

packages/web/README.md

@@ -31,12 +31,17 @@ openchamber                          # Start on port 3000
 openchamber --port 8080              # Custom port
 openchamber --daemon                 # Background mode
 openchamber --ui-password secret     # Password-protect UI
+openchamber --try-cf-tunnel          # Create a Cloudflare Quick Tunnel for remote access
+openchamber --try-cf-tunnel --tunnel-qr              # Show QR code for easy mobile access
+openchamber --try-cf-tunnel --tunnel-password-url   # Include password in URL for auto-login
 OPENCODE_PORT=4096 OPENCODE_SKIP_START=true openchamber                    # Connect to external OpenCode server
 OPENCODE_HOST=https://myhost:4096 OPENCODE_SKIP_START=true openchamber  # Connect via custom host/HTTPS
 openchamber stop                     # Stop server
 openchamber update                   # Update to latest version
 ```
 
+Named Tunnel mode is configured in-app (Settings -> OpenChamber -> Tunnel). The CLI currently supports Quick Tunnel flags only. `--tunnel <config.yml>` is not supported yet.
+
 ### Environment Variables
 
 - `OPENCODE_HOST` - Full base URL of external OpenCode server, e.g. `http://hostname:4096` or `https://hostname:4096` (overrides `OPENCODE_PORT`)
@@ -61,7 +66,7 @@ openchamber update                   # Update to latest version
 
 ### Web / PWA
 
-- Cloudflare Quick Tunnel for instant remote access (`--try-cf-tunnel`)
+- Cloudflare tunnel access with two modes: Quick Tunnel (CLI) and Named Tunnel (in-app settings)
 - One-scan onboarding with tunnel QR + password URL helpers
 - Mobile-first experience: optimized chat controls, keyboard-safe layouts, and attachment-friendly UI
 - Background notifications plus reliable cross-tab session activity tracking