feat(dashboard): show top 5 most used commands as clickable chips

Top commands (excluding ls/cd/pwd/clear/exit/history) displayed as
large chips with usage count. Click to copy. Full history below.

💘 Generated with Crush

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

web/src/components/Dashboard.jsx

@@ -92,6 +92,21 @@ export default function Dashboard({ api, refreshRef }) {
   const minimax = (quota || []).find(p => p.name === 'minimax')
   const zai = (quota || []).find(p => p.name === 'zai')
 
+  const EXCLUDE_CMDS = ['ls', 'cd', 'pwd', 'clear', 'exit', 'history']
+
+  const topCmds = (() => {
+    const counts = {}
+    for (const c of recentCmds) {
+      const base = c.cmd.split(/\s+/)[0]
+      if (EXCLUDE_CMDS.includes(base) || !base) continue
+      counts[base] = (counts[base] || 0) + 1
+    }
+    return Object.entries(counts)
+      .sort((a, b) => b[1] - a[1])
+      .slice(0, 5)
+      .map(([cmd, count]) => ({ cmd, count }))
+  })()
+
   return (
     <div className="dash-grid">
       {/* CPU */}
@@ -175,6 +190,16 @@ export default function Dashboard({ api, refreshRef }) {
         <div className="dash-card-head">
           <span className="dash-label">Recent Commands</span>
         </div>
+        {topCmds.length > 0 && (
+          <div className="dash-cmd-top">
+            {topCmds.map((c, i) => (
+              <div key={i} className="dash-cmd-chip" onClick={() => navigator.clipboard.writeText(c.cmd)} title="Copier">
+                <span className="dash-cmd-chip-name">{c.cmd}</span>
+                <span className="dash-cmd-chip-count">{c.count}×</span>
+              </div>
+            ))}
+          </div>
+        )}
         <div className="dash-cmd-list">
           {recentCmds.length === 0 && <span className="dash-empty">No history</span>}
           {recentCmds.map((c, i) => (

web/src/styles/global.css

@@ -686,6 +686,17 @@ input::placeholder { color: var(--text-disabled); }
   flex: 1; min-width: 0;
 }
 
+.dash-cmd-top { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 8px; }
+.dash-cmd-chip {
+  display: flex; align-items: center; gap: 6px;
+  padding: 6px 12px; border-radius: var(--radius);
+  background: var(--bg-surface); border: 1px solid var(--border);
+  cursor: pointer; transition: all 0.15s;
+}
+.dash-cmd-chip:hover { border-color: var(--accent-dim); background: var(--accent-bg); }
+.dash-cmd-chip-name { font-size: 13px; font-weight: 700; font-family: var(--font-mono); color: var(--text-primary); }
+.dash-cmd-chip-count { font-size: 10px; font-family: var(--font-mono); color: var(--accent); }
+
 /* Services */
 .dash-services { display: flex; flex-direction: column; gap: 6px; }
 .dash-svc-row {