feat(P06): docs & hardening — AGENTS.md/README fixes, agent tests, Gitea tests, multi-project tests, version 0.7.0

---ci---
phase: 6
milestone: v0.7.0
plan: 06
task: P06-all
status: execute
---/ci---

src/agents/executor.test.ts

@@ -0,0 +1,79 @@
+import * as fs from "node:fs";
+import * as path from "node:path";
+import * as os from "node:os";
+import { ExecutorAgent } from "../agents/executor.js";
+import { AgentContext } from "../agents/base.js";
+import { IntelligenceBackend, BackendRequest, BackendResult } from "../backends/types.js";
+import { emptyTokenUsage } from "../backends/types.js";
+
+class MockBackend implements IntelligenceBackend {
+  readonly name = "mock";
+  readonly type = "llm" as const;
+  async isAvailable(): Promise<boolean> { return true; }
+  async execute(request: BackendRequest): Promise<BackendResult> {
+    return {
+      success: true,
+      output: `Mock backend executed: ${request.task.slice(0, 50)}`,
+      artifacts: [],
+      decisions: [],
+      escalations: [],
+      usage: emptyTokenUsage(),
+    };
+  }
+}
+
+function createTempDir(): string {
+  return fs.mkdtempSync(path.join(os.tmpdir(), "ciagent-executor-test-"));
+}
+
+function cleanup(dir: string): void {
+  fs.rmSync(dir, { recursive: true, force: true });
+}
+
+function makeContext(dir: string, backend?: IntelligenceBackend): AgentContext {
+  return {
+    project_path: dir,
+    phase: 1,
+    stage: "execute",
+    specification: "Build a REST API for task management",
+    config_path: path.join(dir, ".ciagent", "config.json"),
+    backend,
+  };
+}
+
+describe("ExecutorAgent", () => {
+  let dir: string;
+
+  beforeEach(() => {
+    dir = createTempDir();
+  });
+
+  afterEach(() => {
+    cleanup(dir);
+  });
+
+  it("returns honest failure without backend", async () => {
+    const executor = new ExecutorAgent();
+    const result = await executor.execute(makeContext(dir));
+    expect(result.success).toBe(false);
+    expect(result.error).toContain("intelligence backend");
+  });
+
+  it("delegates to backend when available", async () => {
+    const mockBackend = new MockBackend();
+    const executor = new ExecutorAgent();
+    const result = await executor.execute(makeContext(dir, mockBackend));
+    expect(result.success).toBe(true);
+    expect(result.output).toContain("Mock backend executed");
+  });
+
+  it("has correct agent name", () => {
+    const executor = new ExecutorAgent();
+    expect(executor.name).toBe("executor");
+  });
+
+  it("has correct workflow", () => {
+    const executor = new ExecutorAgent();
+    expect(executor.workflow).toBe("execute");
+  });
+});