feat(shell): add Ctrl+/- zoom and display all shortcuts in footer

- Ctrl+/Ctrl-/Ctrl+0 to zoom in/out/reset terminal font size
- Zoom badge indicator in tab bar
- All shell shortcuts now shown in statusbar footer
- Added i18n labels for search, zoom, switch tab, next tab

💘 Generated with Crush

Assisted-by: GLM-5.1 via Crush <crush@charm.land>

web/src/components/App.jsx

@@ -94,6 +94,10 @@ export default function App() {
     shell: [
       { keys: `${layout.keys.ctrl}+${layout.keys.shift}+C`, desc: t('statusbar.copy') },
       { keys: `${layout.keys.ctrl}+${layout.keys.shift}+V`, desc: t('statusbar.paste') },
+      { keys: `${layout.keys.ctrl}+F`, desc: t('statusbar.search') },
+      { keys: `${layout.keys.ctrl}+/Ctrl−`, desc: t('statusbar.zoom') },
+      { keys: `Alt+1-7`, desc: t('statusbar.switchTab') },
+      { keys: `${layout.keys.shift}+Tab`, desc: t('statusbar.nextTab') },
       { keys: layout.keys.enter, desc: t('statusbar.runCommand') },
       { keys: `${layout.keys.up}/${layout.keys.down}`, desc: t('statusbar.commandHistory') },
     ],

web/src/components/Shell.jsx

@@ -255,6 +255,27 @@ function createTerminal(container, settings = {}) {
       return false
     }
 
+    if (ctrl && (e.key === '=' || e.key === '+')) {
+      e.preventDefault()
+      e.stopPropagation()
+      window.dispatchEvent(new CustomEvent('shell-zoom', { detail: 1 }))
+      return false
+    }
+
+    if (ctrl && e.key === '-') {
+      e.preventDefault()
+      e.stopPropagation()
+      window.dispatchEvent(new CustomEvent('shell-zoom', { detail: -1 }))
+      return false
+    }
+
+    if (ctrl && e.key === '0') {
+      e.preventDefault()
+      e.stopPropagation()
+      window.dispatchEvent(new CustomEvent('shell-zoom', { detail: 0 }))
+      return false
+    }
+
     return true
   })
 
@@ -387,9 +408,36 @@ export default function Shell({ api }) {
   const [searchText, setSearchText] = useState('')
   const searchInputRef = useRef(null)
   const searchDecorationsRef = useRef(null)
+  const [zoomLevel, setZoomLevel] = useState(0)
+  const baseFontSizeRef = useRef(12)
 
   useEffect(() => { settingsRef.current = terminalSettings }, [terminalSettings])
 
+  useEffect(() => {
+    baseFontSizeRef.current = terminalSettings.fontSize || 12
+  }, [terminalSettings.fontSize])
+
+  useEffect(() => {
+    const handler = (e) => {
+      const direction = e.detail
+      setZoomLevel(prev => {
+        let next
+        if (direction === 0) next = 0
+        else next = Math.max(-8, Math.min(10, prev + direction))
+        const newSize = baseFontSizeRef.current + next * 2
+        for (const entry of Object.values(tabsRef.current)) {
+          if (entry.term && !entry.term._disposed) {
+            entry.term.options.fontSize = newSize
+            try { entry.fitAddon.fit() } catch {}
+          }
+        }
+        return next
+      })
+    }
+    window.addEventListener('shell-zoom', handler)
+    return () => window.removeEventListener('shell-zoom', handler)
+  }, [])
+
   const [sshForm, setSshForm] = useState({
     name: '', host: '', port: 22, user: '', key_path: '',
   })
@@ -1059,6 +1107,11 @@ export default function Shell({ api }) {
           </div>
 
           <div className="shell-tab-actions">
+            {zoomLevel !== 0 && (
+              <span className="shell-zoom-badge">
+                {zoomLevel > 0 ? '+' : ''}{zoomLevel > 0 ? zoomLevel * 2 : zoomLevel * 2}px
+              </span>
+            )}
             {tabs.length < MAX_TABS && (
               <div className="shell-new-tab-wrapper">
                 <button className="shell-new-tab-btn" onClick={() => setShowMenu(!showMenu)} title={t('shell.newTab')}>

web/src/i18n/en.js

@@ -18,6 +18,10 @@ const en = {
     newLine: 'New line',
     copy: 'Copy',
     paste: 'Paste',
+    search: 'Search',
+    zoom: 'Zoom +/−',
+    switchTab: 'Switch tab',
+    nextTab: 'Next tab',
     runCommand: 'Run command',
     commandHistory: 'Command history',
   },

web/src/i18n/fr.js

@@ -18,6 +18,10 @@ const fr = {
     newLine: 'Nouvelle ligne',
     copy: 'Copier',
     paste: 'Coller',
+    search: 'Rechercher',
+    zoom: 'Zoom +/\u2212',
+    switchTab: 'Changer d\u2019onglet',
+    nextTab: 'Onglet suivant',
     runCommand: 'Ex\u00e9cuter',
     commandHistory: 'Historique',
   },

web/src/styles/global.css

@@ -329,6 +329,14 @@ input::placeholder { color: var(--text-disabled); }
 
 .shell-tab-actions { display: flex; align-items: center; gap: 4px; flex-shrink: 0; }
 
+.shell-zoom-badge {
+  font-size: 10px; font-family: var(--font-mono); font-weight: 600;
+  color: var(--accent); background: var(--accent-bg);
+  padding: 2px 6px; border-radius: 3px;
+  border: 1px solid var(--accent-dim);
+  white-space: nowrap;
+}
+
 .shell-new-tab-wrapper { position: relative; }
 .shell-new-tab-btn {
   display: flex; align-items: center; gap: 2px;