docs: Add LuCI screenshots and update HISTORY.md

- Add 92 LuCI module screenshots to docs/screenshots/router/
- Document haproxyctl generate bug fix in HISTORY.md

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.claude/HISTORY.md

@@ -1,6 +1,46 @@
 # SecuBox UI & Theme History
 
-_Last updated: 2026-03-26 (Wiki Documentation)_
+_Last updated: 2026-03-27 (HAProxy Generate Bug Fix)_
+
+0. **HAProxy Config Generation Bug Fix (2026-03-27)**
+   - **Root cause**: Nested `config_foreach` calls in `_generate_backend()` corrupted UCI iteration state
+   - **Symptoms**: Server lines appearing in wrong sections (userlist, global), backends before defaults
+   - **Fix in `haproxyctl`**:
+     - Pre-collect all server sections into temp file before iterating backends
+     - Removed nested `config_foreach _check_server_sections server` and `config_foreach _add_server_to_backend server`
+     - Server data now read from temp file using grep + while loop
+     - Double-buffering pattern prevents output interleaving
+   - **Files modified**: `package/secubox/secubox-app-haproxy/files/usr/sbin/haproxyctl`
+   - **Testing**: Config validates cleanly, HAProxy restarts successfully
+
+0. **Master-Link OpenWRT Client (2026-03-26)**
+   - **New package**: `luci-app-masterlink` - Mesh enrollment client for OpenWRT
+   - **RPCD handler** (`/usr/libexec/rpcd/luci.masterlink`):
+     - `status`: Current mesh membership (enabled, role, master_ip, fingerprint)
+     - `join`: Join mesh with master_ip and token
+     - `leave`: Leave current mesh
+     - `info`: Local node info (fingerprint, hostname, IP, model)
+     - `verify`: Verify master before joining
+   - **CLI tool** (`/usr/bin/sbx-mesh-join`):
+     - Supports URL parsing: `sbx-mesh-join 'http://ip:7331/master-link/?token=xxx'`
+     - Supports direct args: `sbx-mesh-join 192.168.1.1 abc123token`
+     - Auto-generates node fingerprint from MAC address
+     - Saves config to UCI on success
+   - **LuCI interface** (`/view/masterlink/join.js`):
+     - Status display (connected/pending/disconnected)
+     - Invite URL/token input with Verify and Join buttons
+     - Leave mesh button when connected
+     - CLI help section
+   - **UCI config** (`/etc/config/masterlink`):
+     - Settings: enabled, role, status, master_ip, master_fingerprint, depth, joined_at
+   - **Files created**: Makefile, RPCD handler, menu.json, ACL, JS view, CLI tool, UCI config
+
+0. **LuCI Screenshot Capture (2026-03-26)**
+   - **Puppeteer script** (`scripts/screenshot-capture.js`) for automated LuCI screenshots
+   - Form-based authentication with temporary password
+   - Captures 92 modules to `docs/screenshots/router/`
+   - Screenshots show actual module content (varying file sizes 55KB-203KB)
+   - Support for single module or full capture
 
 0. **Comprehensive Wiki Documentation (2026-03-26)**
    - **Wiki structure** created at `docs/wiki/`: