Initial commit: DevClaw OpenClaw plugin

Multi-project dev/qa pipeline orchestration with 4 agent tools:
- task_pickup: atomic task pickup with model selection and session reuse
- task_complete: DEV done, QA pass/fail/refine with label transitions
- queue_status: task queue and worker status across projects
- session_health: zombie detection and state consistency checks

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

lib/audit.ts

@@ -0,0 +1,29 @@
+/**
+ * Append-only NDJSON audit logging.
+ * Every tool call automatically logs — no manual action needed from agents.
+ */
+import { appendFile, mkdir } from "node:fs/promises";
+import { join, dirname } from "node:path";
+
+export async function log(
+  workspaceDir: string,
+  event: string,
+  data: Record<string, unknown>,
+): Promise<void> {
+  const filePath = join(workspaceDir, "memory", "audit.log");
+  const entry = JSON.stringify({
+    ts: new Date().toISOString(),
+    event,
+    ...data,
+  });
+  try {
+    await appendFile(filePath, entry + "\n");
+  } catch (err: unknown) {
+    // If directory doesn't exist, create it and retry
+    if ((err as NodeJS.ErrnoException).code === "ENOENT") {
+      await mkdir(dirname(filePath), { recursive: true });
+      await appendFile(filePath, entry + "\n");
+    }
+    // Audit logging should never break the tool — silently ignore other errors
+  }
+}