Updates

kernel/bin/agent

@@ -3931,13 +3931,21 @@ async function bareAgentDispatchTool(o) {
   async function captureExec(line, timeoutMs, captureOpts) {
     const outPath = paths.cmdOut
     const captureExit = Boolean(captureOpts && captureOpts.captureExit)
+    const trimmed = String(line || '').trim()
+    const compoundShell =
+      /\n/.test(trimmed) ||
+      /(^|[;\s])(for|if|while|until|case|function)\b/.test(trimmed) ||
+      /\b(do|done|then|else|fi|esac)\b/.test(trimmed) ||
+      /&&|\|\||\(\(|\{|\}/.test(trimmed)
     /**
      * Do not wrap with `{ cmd ; }` — Bare OS `splitTokensBySemicolon` splits on every `;`
      * at depth 0 and does not treat `{ … }` as a compound, so `{` became argv[0]
      * (`unknown command: {`). Redirect only; read exit from env after `execLine`.
      */
     const wrapped =
-      line +
+      (compoundShell
+        ? 'sh -c ' + bareAgentShellQuote(trimmed)
+        : line) +
       ' > ' +
       bareAgentShellQuote(outPath) +
       ' 2>&1'

kernel/bin/sh

@@ -153,10 +153,31 @@ async function run(ctx, argv) {
     text = nl === -1 ? '' : text.slice(nl + 1)
   }
   const lines = text.split(/\r?\n/)
+  const blocks = []
+  let cur = ''
+  let depth = 0
   for (let i = 0; i < lines.length; i++) {
-    const trimmed = lines[i].trim()
+    const raw = lines[i]
+    const trimmed = raw.trim()
     if (!trimmed || trimmed.startsWith('#')) continue
-    await ctx.execLine(trimmed)
+    cur += (cur ? '\n' : '') + raw
+    const words = trimmed
+      .replace(/[;(){}]/g, ' ')
+      .split(/\s+/)
+      .filter(Boolean)
+    for (const w of words) {
+      if (w === 'if' || w === 'for' || w === 'while' || w === 'until' || w === 'case')
+        depth++
+      else if (w === 'fi' || w === 'done' || w === 'esac') depth = Math.max(0, depth - 1)
+    }
+    if (depth === 0) {
+      blocks.push(cur)
+      cur = ''
+    }
+  }
+  if (cur.trim()) blocks.push(cur)
+  for (const block of blocks) {
+    await ctx.execLine(block)
     if ((Number(ctx.exitCode) || 0) !== 0) return
   }
   ctx.exitCode = 0