fix: comment out ACP/performanceShim imports for CC_Pure build compatibility

src/entrypoints/cli.tsx

@@ -2,7 +2,8 @@
 // Performance shim MUST be the first import — it replaces globalThis.performance
 // with a JS-backed implementation before React/OTel capture the native reference.
 // Without this, JSC's C++ Vector grows without bound in long-running sessions.
-import '../utils/performanceShim.js';
+// CC_Pure: performanceShim and ACP entry not needed
+// import '../utils/performanceShim.js';
 import { feature } from 'bun:bundle';
 import { isEnvTruthy } from '../utils/envUtils.js';
 
@@ -120,13 +121,13 @@ async function main(): Promise<void> {
     return;
   }
 
-  // Fast-path for `--acp` — ACP (Agent Client Protocol) agent mode over stdio.
-  if (feature('ACP') && process.argv[2] === '--acp') {
-    profileCheckpoint('cli_acp_path');
-    const { runAcpAgent } = await import('../services/acp/entry.js');
-    await runAcpAgent();
-    return;
-  }
+  // CC_Pure: ACP feature not included — commented out
+  // if (feature('ACP') && process.argv[2] === '--acp') {
+  //   profileCheckpoint('cli_acp_path');
+  //   const { runAcpAgent } = await import('../services/acp/entry.js');
+  //   await runAcpAgent();
+  //   return;
+  // }
 
   if (args[0] === 'weixin') {
     profileCheckpoint('cli_weixin_path');

src/services/acp/entry.ts

@@ -0,0 +1,74 @@
+import { AgentSideConnection, ndJsonStream } from '@agentclientprotocol/sdk'
+import type { Stream } from '@agentclientprotocol/sdk'
+import { Readable, Writable } from 'node:stream'
+import { AcpAgent } from './agent.js'
+import { enableConfigs } from '../../utils/config.js'
+import { applySafeConfigEnvironmentVariables } from '../../utils/managedEnv.js'
+
+/**
+ * Creates an ACP Stream from a pair of Node.js streams.
+ */
+export function createAcpStream(
+  nodeReadable: NodeJS.ReadableStream,
+  nodeWritable: NodeJS.WritableStream,
+): Stream {
+  const readableFromClient = Readable.toWeb(
+    nodeReadable as typeof process.stdin,
+  ) as unknown as ReadableStream<Uint8Array>
+  const writableToClient = Writable.toWeb(
+    nodeWritable as typeof process.stdout,
+  ) as unknown as WritableStream<Uint8Array>
+  return ndJsonStream(writableToClient, readableFromClient)
+}
+
+/**
+ * Entry point for the ACP (Agent Client Protocol) agent mode.
+ */
+export async function runAcpAgent(): Promise<void> {
+  enableConfigs()
+
+  // Apply environment variables from settings.json (ANTHROPIC_BASE_URL,
+  // ANTHROPIC_AUTH_TOKEN, model overrides, etc.) so the API client can
+  // authenticate. Without this, Zed-launched processes won't have these
+  // env vars in process.env.
+  applySafeConfigEnvironmentVariables()
+
+  const stream = createAcpStream(process.stdin, process.stdout)
+
+  let agent!: AcpAgent
+  const connection = new AgentSideConnection(conn => {
+    agent = new AcpAgent(conn)
+    return agent
+  }, stream)
+
+  // stdout is used for ACP messages — redirect console to stderr
+  console.log = console.error
+  console.info = console.error
+  console.warn = console.error
+  console.debug = console.error
+
+  async function shutdown(): Promise<void> {
+    // Clean up all active sessions
+    for (const [sessionId] of agent.sessions) {
+      try {
+        await agent.unstable_closeSession({ sessionId })
+      } catch {
+        // Best-effort cleanup
+      }
+    }
+    process.exit(0)
+  }
+
+  // Exit cleanly when the ACP connection closes
+  connection.closed.then(shutdown).catch(shutdown)
+
+  process.on('SIGTERM', shutdown)
+  process.on('SIGINT', shutdown)
+
+  process.on('unhandledRejection', (reason, promise) => {
+    console.error('Unhandled Rejection at:', promise, 'reason:', reason)
+  })
+
+  // Keep process alive while connection is open
+  process.stdin.resume()
+}

src/utils/performanceShim.ts

@@ -0,0 +1,165 @@
+/**
+ * Performance shim — replaces globalThis.performance to prevent JSC's C++ Vector
+ * from growing without bound.
+ *
+ * In Bun, globalThis.performance is JSC's native Performance object. It stores
+ * marks, measures, and resource timings in a C++ Vector that never shrinks even
+ * after clearMarks(). Long-running sessions (daemon, /loop) accumulate hundreds
+ * of MB of dead capacity.
+ *
+ * This shim keeps performance.now() on the native object (fast, no memory cost)
+ * but redirects mark/measure/getEntries operations to a plain JS Map that the GC
+ * can reclaim. Third-party code (React reconciler, OTel/Langfuse) uses
+ * performance.now() for timing — that stays native. The accumulating operations
+ * go to GC-able JS memory instead.
+ *
+ * MUST be installed before React/OTel import — see cli.tsx first import.
+ */
+
+const original = globalThis.performance
+
+// JS-backed storage — fully GC-able
+const marks = new Map<string, number>()
+const measures = new Map<
+  string,
+  { name: string; startTime: number; duration: number }
+>()
+
+function now(): number {
+  return original.now()
+}
+
+function mark(name: string): PerformanceMark {
+  marks.set(name, now())
+  // Return a minimal PerformanceMark-like object to satisfy the interface.
+  // React/OTel only use mark() for side effects, not the return value.
+  return {
+    name,
+    entryType: 'mark',
+    startTime: marks.get(name)!,
+    duration: 0,
+  } as PerformanceMark
+}
+
+function measure(
+  name: string,
+  startMarkOrOptions?: string | MeasureOptions,
+  endMark?: string,
+): void {
+  let startTime: number
+  let duration: number
+
+  if (typeof startMarkOrOptions === 'string') {
+    const start = marks.get(startMarkOrOptions)
+    const end = endMark ? marks.get(endMark) : now()
+    startTime = start ?? now()
+    duration = (end ?? now()) - startTime
+  } else if (startMarkOrOptions && typeof startMarkOrOptions === 'object') {
+    startTime = startMarkOrOptions.start ?? 0
+    duration = (startMarkOrOptions.end ?? now()) - startTime
+  } else {
+    startTime = 0
+    duration = now()
+  }
+
+  measures.set(name, { name, startTime, duration })
+}
+
+interface MeasureOptions {
+  start?: number
+  end?: number
+  detail?: unknown
+}
+
+interface PerformanceEntryLike {
+  readonly name: string
+  readonly entryType: string
+  readonly startTime: number
+  readonly duration: number
+}
+
+function getEntriesByType(type: string): PerformanceEntryLike[] {
+  if (type === 'mark') {
+    return [...marks.entries()].map(([name, startTime]) => ({
+      name,
+      entryType: 'mark',
+      startTime,
+      duration: 0,
+    }))
+  }
+  if (type === 'measure') {
+    return [...measures.values()].map(m => ({
+      name: m.name,
+      entryType: 'measure',
+      startTime: m.startTime,
+      duration: m.duration,
+    }))
+  }
+  return []
+}
+
+function getEntriesByName(name: string, type?: string): PerformanceEntryLike[] {
+  const entries = getEntriesByType(type ?? 'mark').concat(
+    type === undefined ? getEntriesByType('measure') : [],
+  )
+  return entries.filter(e => e.name === name)
+}
+
+function clearMarks(name?: string): void {
+  if (name !== undefined) {
+    marks.delete(name)
+  } else {
+    marks.clear()
+  }
+}
+
+function clearMeasures(name?: string): void {
+  if (name !== undefined) {
+    measures.delete(name)
+  } else {
+    measures.clear()
+  }
+}
+
+// Plain object shim — must NOT inherit from Performance.prototype because
+// native getters (onresourcetimingbufferfull, timeOrigin, toJSON) check
+// that `this` is an actual JSC Performance instance and throw otherwise.
+const shim = {
+  now,
+  mark,
+  measure: measure as typeof performance.measure,
+  getEntriesByType: getEntriesByType as typeof performance.getEntriesByType,
+  getEntriesByName: getEntriesByName as typeof performance.getEntriesByName,
+  clearMarks: clearMarks as typeof performance.clearMarks,
+  clearMeasures: clearMeasures as typeof performance.clearMeasures,
+  clearResourceTimings: (() => {}) as typeof performance.clearResourceTimings,
+  setResourceTimingBufferSize:
+    (() => {}) as typeof performance.setResourceTimingBufferSize,
+  // Delegate read-only properties to the original
+  get timeOrigin() {
+    return original.timeOrigin
+  },
+  get onresourcetimingbufferfull() {
+    return (original as any).onresourcetimingbufferfull
+  },
+  set onresourcetimingbufferfull(_v: any) {
+    // no-op — prevent accumulation
+  },
+  toJSON() {
+    return original.toJSON()
+  },
+} as typeof performance
+
+/**
+ * Install the shim onto globalThis.performance. Safe to call multiple times.
+ * Must run before React and OTel import to prevent them from capturing the
+ * native Performance reference.
+ */
+export function installPerformanceShim(): void {
+  if ((globalThis as any).__performanceShimInstalled) return
+  ;(globalThis as any).__performanceShimInstalled = true
+  globalThis.performance = shim
+}
+
+// Auto-install on import
+installPerformanceShim()