feat: add multi-tab terminal with SSH support, config editing, and dashboard redesign

- Terminal: multi-tab sessions, SSH connections, shell detection (zsh/bash/fish/wsl/powershell)
- Config: inline profile & provider editing, system update management
- Dashboard: grid layout with inline tools/notifications/workflows sections
- Add lucide-react icons, i18n keys (FR/EN), and new CSS components

💾 Generated with Crush

Assisted-by: GLM-5-Turbo via Crush <crush@charm.land>

web/src/api/client.js

@@ -26,7 +26,13 @@ const api = {
   installTools: (tools) => request('/install', { method: 'POST', body: JSON.stringify({ tools }) }),
   configureMCP: () => request('/mcp/configure', { method: 'POST' }),
   savePreferences: (prefs) => request('/preferences', { method: 'PUT', body: JSON.stringify(prefs) }),
+  saveProfile: (profile) => request('/config/profile', { method: 'PUT', body: JSON.stringify(profile) }),
+  saveProvider: (provider) => request('/config/provider', { method: 'PUT', body: JSON.stringify(provider) }),
+  runUpdate: (tool) => request('/update/run', { method: 'POST', body: JSON.stringify({ tool: tool || '' }) }),
   runCommand: (command, cwd) => request('/terminal', { method: 'POST', body: JSON.stringify({ command, cwd }) }),
+  getTerminalSessions: () => request('/terminal/sessions'),
+  addSSHConnection: (conn) => request('/terminal/sessions', { method: 'POST', body: JSON.stringify(conn) }),
+  deleteSSHConnection: (name) => request(`/terminal/sessions/${encodeURIComponent(name)}`, { method: 'DELETE' }),
   sendChat: (message, stream = true) => {
     if (!stream) {
       return request('/chat', { method: 'POST', body: JSON.stringify({ message, stream: false }) })