test: 全模式功能测试覆盖 (12模式 33项测试)

新增 arc/eng/do/dbg/ctx/xdb/sdb/ndb/dep/tst/sec/rvr 全模式功能测试；
fix do_mode UI 检测中文关键词补全；scripts/install.sh 同步更新。

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

test_dbg.py

@@ -0,0 +1,159 @@
+#!/usr/bin/env python3
+"""Dbg Mode 功能测试"""
+
+import sys
+import os
+import tempfile
+import json
+from pathlib import Path
+
+sys.path.insert(0, str(Path(__file__).parent / "lib"))
+
+# 实际的调试步骤
+DBG_STEPS = ["confirm_symptoms", "load_context", "reproduce", "locate_root_cause", "fix", "verify_again", "document", "close"]
+
+def test_dbg_evidence_first_gate():
+    """测试证据先于修复门控"""
+    from air_runtime.modes.dbg_mode import EvidenceFirstGate, WorkflowViolation
+
+    with tempfile.TemporaryDirectory() as tmpdir:
+        session_id = "dbg-001"
+        gate = EvidenceFirstGate(session_id)
+
+        # 初始状态：无证据，不能修改代码
+        assert gate.can_modify_code() == False
+
+        # 尝试修改代码应该抛出异常
+        try:
+            gate.gate_check()
+            assert False, "应该抛出 WorkflowViolation"
+        except WorkflowViolation as e:
+            assert "取证" in str(e)
+
+        # 收集证据后可以修改代码
+        gate.record_evidence("screenshot", "login.png")
+        gate.record_evidence("log_analysis", "app.log")
+
+        assert gate.can_modify_code() == True
+        gate.gate_check()  # 不应抛异常
+
+        print("✓ 证据先于修复门控测试通过")
+    return True
+
+
+def test_dbg_start_session():
+    """测试启动调试会话"""
+    from air_runtime.modes.dbg_mode import start_session, get_step
+
+    with tempfile.TemporaryDirectory() as tmpdir:
+        project_root = Path(tmpdir)
+
+        # 启动调试会话
+        result = start_session(project_root, "T-001")
+
+        # 检查返回值
+        assert "sessionId" in result
+        assert "sessionPath" in result
+        assert "currentStep" in result
+
+        # 检查会话文件存在
+        session_path = Path(result["sessionPath"])
+        assert session_path.exists()
+
+        # 检查步骤是 confirm_symptoms
+        step = get_step(session_path)
+        assert step == "confirm_symptoms", f"初始步骤应为 confirm_symptoms，实际: {step}"
+
+        print(f"✓ 启动调试会话测试通过，会话: {result['sessionId']}, 步骤: {step}")
+    return True
+
+
+def test_dbg_advance_step():
+    """测试步骤推进（提供正确证据）"""
+    from air_runtime.modes.dbg_mode import start_session, advance_step, get_step
+
+    with tempfile.TemporaryDirectory() as tmpdir:
+        project_root = Path(tmpdir)
+
+        # 启动会话
+        result = start_session(project_root, "T-002")
+        session_path = Path(result["sessionPath"])
+
+        # confirm_symptoms 步骤需要 symptom, expected, actual
+        evidence = {
+            "symptom": "程序崩溃",
+            "expected": "正常输出 hello world",
+            "actual": "段错误 (segmentation fault)"
+        }
+        next_step = advance_step(session_path, evidence)
+        assert next_step == "load_context", f"下一步应为 load_context，实际: {next_step}"
+
+        print(f"✓ 步骤推进测试通过，下一步: {next_step}")
+    return True
+
+
+def test_dbg_snapshot():
+    """测试快照功能"""
+    from air_runtime.modes.dbg_mode import pre_fix_snapshot
+
+    with tempfile.TemporaryDirectory() as tmpdir:
+        project_root = Path(tmpdir)
+
+        # 初始化 git 仓库
+        import subprocess
+        subprocess.run(["git", "init"], cwd=project_root, capture_output=True)
+        subprocess.run(["git", "config", "user.email", "test@test.com"], cwd=project_root, capture_output=True)
+        subprocess.run(["git", "config", "user.name", "Test"], cwd=project_root, capture_output=True)
+
+        # 创建源文件
+        src_dir = project_root / "src"
+        src_dir.mkdir(parents=True, exist_ok=True)
+        (src_dir / "main.cpp").write_text("int main() { return 0; }")
+
+        # 初始提交
+        subprocess.run(["git", "add", "."], cwd=project_root, capture_output=True)
+        subprocess.run(["git", "commit", "-m", "initial"], cwd=project_root, capture_output=True)
+
+        # 创建快照
+        snapshot_id = pre_fix_snapshot(project_root, "T-003")
+
+        # 快照 ID 可能是空的（因为没有 filesChanged），但函数应该正常执行
+        print(f"✓ 快照功能测试通过")
+    return True
+
+
+def main():
+    print("=" * 50)
+    print("Dbg Mode 功能测试")
+    print("=" * 50)
+
+    tests = [
+        ("证据先于修复门控", test_dbg_evidence_first_gate),
+        ("启动调试会话", test_dbg_start_session),
+        ("步骤推进", test_dbg_advance_step),
+        ("快照功能", test_dbg_snapshot),
+    ]
+
+    passed = 0
+    failed = 0
+
+    for name, test_fn in tests:
+        try:
+            test_fn()
+            passed += 1
+        except Exception as e:
+            print(f"✗ {name} 失败: {e}")
+            import traceback
+            traceback.print_exc()
+            failed += 1
+
+    print("=" * 50)
+    print(f"测试结果: {passed} 通过, {failed} 失败")
+    print("=" * 50)
+
+    return failed == 0
+
+
+if __name__ == "__main__":
+    success = main()
+    sys.exit(0 if success else 1)