feat: initialisation complète du CORE ProxmoxPanel

Backend Go 1.23+ :
- API REST + WebSocket (chi, gorilla/websocket)
- Authentification PAM via SSH + JWT RS256
- Chiffrement AES-256-GCM pour secrets SQLite
- Pool SSH, client Proxmox REST, hub WebSocket pub/sub
- Système de modules compilés à initialisation conditionnelle
- Audit log, migrations SQLite versionnées

Frontend Vue 3 + Vite + TypeScript :
- Thème Neumorphism sombre/clair (CSS custom properties)
- Wizard d'installation, Dashboard drag-drop, Terminal xterm.js
- Toutes les vues CORE + stubs modules optionnels
- i18n EN/FR (vue-i18n v11)

Infrastructure :
- Docker multi-stage (Go → alpine, Node → nginx)
- docker-compose.yml, .gitattributes, LICENSE MIT, README

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/modules/terminal/README.md

@@ -0,0 +1,54 @@
+# Module — Terminal
+
+**Type**: Optional (disabled by default)
+
+Interactive SSH terminal in the browser. Connects to the Proxmox host (or any SSH-accessible target) and opens a full PTY session via WebSocket.
+
+## Features
+
+- Full PTY support (`xterm-256color`, interactive shell)
+- Responsive resizing — the terminal adjusts when the browser window is resized
+- Terminal theme matches the panel's Neumorphism dark/light design
+- Audit log entry on open and close
+
+## WebSocket Endpoint
+
+`GET /ws/terminal?token=<jwt>&host=<optional-override>`
+
+If `host` is not specified, the SSH host configured during installation is used.
+
+### Message Format
+
+**Client → Server** (keyboard input): raw binary bytes
+
+**Client → Server** (resize event): JSON text frame
+
+```json
+{ "type": "resize", "cols": 120, "rows": 40 }
+```
+
+**Server → Client** (terminal output): raw binary bytes
+
+## Frontend
+
+Uses [xterm.js](https://xtermjs.org/) with the following addons:
+
+- `@xterm/addon-fit` — auto-resize to container dimensions
+- `@xterm/addon-attach` — attach xterm directly to a WebSocket
+
+## How It Works
+
+1. WebSocket connection is established and JWT is validated
+2. Backend opens an SSH connection using stored credentials
+3. A PTY session is requested (`xterm-256color`, initial size 80×24)
+4. An interactive shell is launched
+5. All data flows bidirectionally: WebSocket ↔ SSH ↔ PTY
+
+## Requirements
+
+- SSH access to the target host (password authentication)
+- The `ssh_host`, `ssh_username`, `ssh_password` settings must be configured
+
+## License
+
+MIT — see [LICENSE](../../LICENSE)