fix(shell): prevent Enter in AI chat from leaking to terminal

Stop propagation of Enter keydown in AI input and defer terminal
focus to next event loop tick to prevent xterm from capturing the
same key event.

💘 Generated with Crush

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

web/src/components/Shell.jsx

@@ -439,6 +439,12 @@ export default function Shell({ api }) {
         const entry = tabsRef.current[tab.id]
         if (entry) entry.fitAddon.fit()
       }
+      setTimeout(() => {
+        for (const tab of tabsRef.current._tabList || []) {
+          const entry = tabsRef.current[tab.id]
+          if (entry) entry.fitAddon.fit()
+        }
+      }, 150)
     })
   }, [initTerminal])
 
@@ -472,11 +478,11 @@ export default function Shell({ api }) {
       requestAnimationFrame(() => {
         if (cancelled) return
         const entry = tabsRef.current[tab.id]
-        if (entry) entry.fitAddon.fit()
+        if (entry) {
+          entry.fitAddon.fit()
+          setTimeout(() => { if (!cancelled) entry.fitAddon.fit() }, 100)
+        }
       })
-    }
-
-    for (const tab of tabs) {
       if (!tabsRef.current[tab.id]) {
         tryInitTab(tab, 0)
       }
@@ -687,7 +693,7 @@ export default function Shell({ api }) {
 
     if (!fromEvent) {
       setAiInput('')
-      focusAiTerminal()
+      setTimeout(() => focusAiTerminal(), 0)
     }
 
     if (trimmed === '/clear') {
@@ -931,7 +937,7 @@ export default function Shell({ api }) {
           <input
             value={aiInput}
             onChange={e => setAiInput(e.target.value)}
-            onKeyDown={e => e.key === 'Enter' && handleAiSend()}
+            onKeyDown={e => { if (e.key === 'Enter') { e.preventDefault(); e.stopPropagation(); handleAiSend() } }}
             placeholder={aiAtLimit ? '/clear pour continuer' : t('shell.askAi')}
             disabled={aiAtLimit && aiInput !== '/clear'}
           />

web/src/styles/global.css

@@ -276,8 +276,8 @@ input::placeholder { color: var(--text-disabled); }
 .sidebar-tab:hover { background: var(--bg-card); color: var(--text-primary); }
 .sidebar-tab.active { background: var(--accent); color: #fff; font-weight: 600; }
 
-.shell-layout { display: flex; height: 100%; }
-.shell-terminal-col { flex: 1; display: flex; flex-direction: column; min-width: 0; min-height: 0; overflow: hidden; }
+.shell-layout { display: flex; height: 100%; overflow: hidden; }
+.shell-terminal-col { flex: 1; display: flex; flex-direction: column; min-width: 0; overflow: hidden; }
 
 .shell-tabs-bar {
   display: flex; align-items: center; background: var(--bg-surface);
@@ -382,7 +382,7 @@ input::placeholder { color: var(--text-disabled); }
 }
 .shell-menu-divider { height: 1px; background: var(--border); margin: 4px 6px; }
 
-.shell-xterm-wrapper { flex: 1; height: 100%; background: var(--bg); overflow: hidden; position: relative; }
+.shell-xterm-wrapper { flex: 1; min-height: 0; background: var(--bg); overflow: hidden; position: relative; }
 .shell-xterm-instance {
   position: absolute;
   inset: 0;
@@ -402,7 +402,7 @@ input::placeholder { color: var(--text-disabled); }
 .shell-tab.ai-tab .shell-tab-name { color: var(--accent); }
 .shell-tab.ai-tab { border-bottom-color: var(--accent); }
 
-.shell-ai-col { width: 320px; border-left: 1px solid var(--border); background: var(--bg-surface); display: flex; flex-direction: column; flex-shrink: 0; }
+.shell-ai-col { width: 320px; max-width: 320px; border-left: 1px solid var(--border); background: var(--bg-surface); display: flex; flex-direction: column; flex-shrink: 0; overflow: hidden; }
 .ai-panel-header { padding: 12px 16px; border-bottom: 1px solid var(--border); font-weight: 700; font-size: 13px; color: var(--accent); display: flex; align-items: center; justify-content: space-between; }
 .shell-analyze-btn {
   display: flex; align-items: center; gap: 4px;