Feat/terminal stack trace

app/playground/filter-demo.tsx

@@ -0,0 +1,57 @@
+'use client'
+
+import { useMemo, useState } from 'react'
+import {
+  Terminal,
+  TerminalCommand,
+  TerminalLog,
+  type LogEntry,
+} from '@/components/terminal'
+import {
+  TerminalFilterBar,
+  emptyFilterState,
+  filterEntries,
+  type FilterBarState,
+} from '@/components/terminal-filter-bar'
+
+const ALL_ENTRIES: LogEntry[] = [
+  { id:  '1', level: 'info',    timestamp: '10:23:44', source: 'server',  message: 'Application starting up...' },
+  { id:  '2', level: 'info',    timestamp: '10:23:45', source: 'server',  message: 'Listening on :3000' },
+  { id:  '3', level: 'debug',   timestamp: '10:23:45', source: 'cache',   message: 'HIT packages/[email protected]' },
+  { id:  '4', level: 'warn',    timestamp: '10:23:46', source: 'cache',   message: 'MISS @openknots/terminal-ui — fetching from registry' },
+  { id:  '5', level: 'info',    timestamp: '10:23:47', source: 'build',   message: 'Compiling 42 modules...' },
+  { id:  '6', level: 'debug',   timestamp: '10:23:47', source: 'build',   message: 'Resolved tsconfig paths in 4ms' },
+  { id:  '7', level: 'success', timestamp: '10:23:48', source: 'build',   message: 'Compiled in 1.2s — 0 errors' },
+  { id:  '8', level: 'info',    timestamp: '10:23:49', source: 'test',    message: 'Running 24 unit tests...' },
+  { id:  '9', level: 'error',   timestamp: '10:23:50', source: 'test',    message: 'FAIL src/utils.test.ts — 1 snapshot mismatch' },
+  { id: '10', level: 'info',    timestamp: '10:23:50', source: 'test',    message: 'Retrying with --updateSnapshot...' },
+  { id: '11', level: 'success', timestamp: '10:23:51', source: 'test',    message: '24 / 24 tests passed — coverage 94%' },
+  { id: '12', level: 'info',    timestamp: '10:23:52', source: 'deploy',  message: 'Uploading artifacts to CDN...' },
+  { id: '13', level: 'warn',    timestamp: '10:23:52', source: 'deploy',  message: 'Edge cache warm-up taking longer than 5s' },
+  { id: '14', level: 'success', timestamp: '10:23:53', source: 'deploy',  message: 'Published to production — https://example.app' },
+]
+
+const SOURCES = [...new Set(ALL_ENTRIES.map((e) => e.source!))]
+
+export function FilterBarDemo() {
+  const [filter, setFilter] = useState<FilterBarState>(emptyFilterState)
+
+  const visible = useMemo(() => filterEntries(ALL_ENTRIES, filter), [filter])
+
+  return (
+    <div className="flex flex-col gap-2">
+      <TerminalFilterBar
+        state={filter}
+        onChange={setFilter}
+        sources={SOURCES}
+      />
+      <Terminal title="pipeline.log">
+        <TerminalCommand>pnpm run ci</TerminalCommand>
+        <TerminalLog entries={visible} maxLines={20} />
+      </Terminal>
+      <p className="font-mono text-xs text-(--term-fg-dim)">
+        {visible.length} / {ALL_ENTRIES.length} entries shown
+      </p>
+    </div>
+  )
+}

app/playground/group-demo.tsx

@@ -0,0 +1,201 @@
+'use client'
+
+import { useState } from 'react'
+import { Terminal, TerminalCommand, TerminalGroup, TerminalLogLine } from '@/components/terminal'
+
+// ── Demo ──────────────────────────────────────────────────────────────────────
+
+/**
+ * Playground demo for TerminalGroup.
+ *
+ * Shows several groups in a single terminal window:
+ * - A success group (collapsed by default) — install step
+ * - A warn group (open) — test step with a warning
+ * - An error group (open) — build step with failures
+ * - An info group (open) — controlled open/close via external button
+ */
+export function GroupDemo() {
+  // Controlled group example
+  const [deployOpen, setDeployOpen] = useState(true)
+
+  return (
+    <Terminal title="ci-pipeline.log">
+      <TerminalCommand>pnpm run ci</TerminalCommand>
+
+      {/* ── Install step: collapsed by default ── */}
+      <div className="px-3 pt-2">
+        <TerminalGroup
+          title="install"
+          summary="42 packages resolved from cache"
+          countLabel="0.8s"
+          variant="success"
+          defaultOpen={false}
+        >
+          <TerminalLogLine
+            level="debug"
+            timestamp="10:23:44"
+            source="npm"
+            message="Resolving dependency tree…"
+          />
+          <TerminalLogLine
+            level="debug"
+            timestamp="10:23:44"
+            source="npm"
+            message="HIT [email protected]"
+          />
+          <TerminalLogLine
+            level="debug"
+            timestamp="10:23:44"
+            source="npm"
+            message="HIT [email protected]"
+          />
+          <TerminalLogLine
+            level="success"
+            timestamp="10:23:44"
+            source="npm"
+            message="42 packages installed from cache"
+          />
+        </TerminalGroup>
+      </div>
+
+      {/* ── Lint step: info, collapsed by default ── */}
+      <div className="px-3 pt-1">
+        <TerminalGroup
+          title="lint"
+          summary="ruff check — no issues"
+          countLabel="0.2s"
+          variant="info"
+          defaultOpen={false}
+        >
+          <TerminalLogLine
+            level="info"
+            timestamp="10:23:45"
+            source="ruff"
+            message="Checking 38 files…"
+          />
+          <TerminalLogLine
+            level="success"
+            timestamp="10:23:45"
+            source="ruff"
+            message="All checks passed"
+          />
+        </TerminalGroup>
+      </div>
+
+      {/* ── Test step: warn, open ── */}
+      <div className="px-3 pt-1">
+        <TerminalGroup
+          title="test"
+          summary="23/24 passed · 1 snapshot mismatch"
+          countLabel="4.1s"
+          variant="warn"
+          defaultOpen
+        >
+          <TerminalLogLine
+            level="info"
+            timestamp="10:23:46"
+            source="jest"
+            message="Running 24 test suites…"
+          />
+          <TerminalLogLine
+            level="success"
+            timestamp="10:23:49"
+            source="jest"
+            message="23 tests passed"
+          />
+          <TerminalLogLine
+            level="warn"
+            timestamp="10:23:49"
+            source="jest"
+            message="FAIL src/utils.test.ts — 1 snapshot out of date"
+          />
+          <TerminalLogLine
+            level="info"
+            timestamp="10:23:49"
+            source="jest"
+            message="Run with --updateSnapshot to fix"
+          />
+        </TerminalGroup>
+      </div>
+
+      {/* ── Build step: error, open ── */}
+      <div className="px-3 pt-1">
+        <TerminalGroup
+          title="build"
+          summary="TypeScript compilation failed"
+          countLabel="3 errors"
+          variant="error"
+          defaultOpen
+        >
+          <TerminalLogLine
+            level="info"
+            timestamp="10:23:50"
+            source="tsc"
+            message="Compiling 42 modules…"
+          />
+          <TerminalLogLine
+            level="error"
+            timestamp="10:23:51"
+            source="tsc"
+            message="src/api/handler.ts:14 — Property 'data' does not exist on type 'Response'"
+          />
+          <TerminalLogLine
+            level="error"
+            timestamp="10:23:51"
+            source="tsc"
+            message="src/api/handler.ts:22 — Argument of type 'string' is not assignable to 'number'"
+          />
+          <TerminalLogLine
+            level="error"
+            timestamp="10:23:51"
+            source="tsc"
+            message="src/utils/retry.ts:8 — Cannot find module '../types' or its type declarations"
+          />
+        </TerminalGroup>
+      </div>
+
+      {/* ── Deploy step: controlled ── */}
+      <div className="px-3 pt-1 pb-3">
+        <TerminalGroup
+          title="deploy"
+          summary="Production rollout"
+          countLabel="2.3s"
+          variant="info"
+          open={deployOpen}
+          onOpenChange={setDeployOpen}
+        >
+          <TerminalLogLine
+            level="info"
+            timestamp="10:23:52"
+            source="k8s"
+            message="Rolling update → deployment/api-server"
+          />
+          <TerminalLogLine
+            level="info"
+            timestamp="10:23:53"
+            source="k8s"
+            message="4/4 pods healthy"
+          />
+          <TerminalLogLine
+            level="success"
+            timestamp="10:23:54"
+            source="k8s"
+            message="Deployment complete. Live at https://api.example.com"
+          />
+        </TerminalGroup>
+
+        {/* External controlled toggle */}
+        <div className="mt-2 pl-1">
+          <button
+            type="button"
+            onClick={() => setDeployOpen((v) => !v)}
+            className="font-mono text-xs text-(--term-fg-dim) underline underline-offset-2
+              hover:text-(--term-fg) transition-colors"
+          >
+            {deployOpen ? '▲ collapse deploy (controlled)' : '▼ expand deploy (controlled)'}
+          </button>
+        </div>
+      </div>
+    </Terminal>
+  )
+}

app/playground/log-demo.tsx

@@ -1,7 +1,9 @@
 'use client'
 
 import { useEffect, useState } from 'react'
-import { Terminal, TerminalCommand, TerminalLog } from '@/components/terminal'
+import { Terminal, TerminalCommand, TerminalLog, type LogEntry } from '@/components/terminal'
+
+// ── String-mode demo (unchanged) ─────────────────────────────────────────────
 
 const STREAM_LINES = [
   '[info] Connecting to build worker...',
@@ -38,3 +40,60 @@ export function LogDemo() {
     </Terminal>
   )
 }
+
+// ── Structured-mode demo ─────────────────────────────────────────────────────
+
+const STREAM_ENTRIES: LogEntry[] = [
+  { level: 'info', timestamp: '10:23:45', source: 'server', message: 'Worker connected' },
+  { level: 'debug', timestamp: '10:23:46', source: 'cache', message: 'HIT packages/[email protected]' },
+  { level: 'warn', timestamp: '10:23:47', source: 'cache', message: 'MISS @openknots/terminal-ui' },
+  { level: 'info', timestamp: '10:23:48', source: 'build', message: 'Compiling 42 modules...' },
+  { level: 'success', timestamp: '10:23:49', source: 'build', message: 'Compiled in 1.2s' },
+  { level: 'info', timestamp: '10:23:50', source: 'test', message: 'Running 24 unit tests...' },
+  {
+    level: 'error',
+    timestamp: '10:23:51',
+    source: 'test',
+    message: 'FAIL src/utils.test.ts — 1 snapshot mismatch',
+  },
+  {
+    level: 'info',
+    timestamp: '10:23:52',
+    source: 'test',
+    message: 'Retrying with --updateSnapshot...',
+  },
+  { level: 'success', timestamp: '10:23:53', source: 'test', message: '24 / 24 tests passed' },
+  { level: 'success', timestamp: '10:23:54', source: 'deploy', message: 'Published to production' },
+]
+
+export function StructuredLogDemo() {
+  const [entries, setEntries] = useState<LogEntry[]>([
+    {
+      id: 'boot-0',
+      level: 'info',
+      timestamp: '10:23:44',
+      source: 'server',
+      message: 'Starting pipeline...',
+    },
+  ])
+
+  useEffect(() => {
+    const timer = window.setInterval(() => {
+      setEntries((current) => {
+        const next = STREAM_ENTRIES[current.length % STREAM_ENTRIES.length]
+        return [...current, { ...next, id: String(current.length) }]
+      })
+    }, 900)
+
+    return () => {
+      window.clearInterval(timer)
+    }
+  }, [])
+
+  return (
+    <Terminal title="pipeline.log">
+      <TerminalCommand>pnpm run ci</TerminalCommand>
+      <TerminalLog entries={entries} maxLines={8} autoScroll />
+    </Terminal>
+  )
+}