chore: sync .cursor/ directory with latest agents, commands, and skills

- Sync 13 agent files with updated descriptions and configurations
- Sync 23 command files with latest YAML frontmatter and content
- Sync 7 skill SKILL.md files with proper YAML frontmatter quoting
- Copy missing cpp-testing and security-scan skills to .cursor/
- Fix integration tests: send matching input to blocking hook test and
  expect correct exit code 2 (was 1)

.cursor/skills/cpp-testing/SKILL.md

@@ -0,0 +1,322 @@
+---
+name: cpp-testing
+description: Use only when writing/updating/fixing C++ tests, configuring GoogleTest/CTest, diagnosing failing or flaky tests, or adding coverage/sanitizers.
+---
+
+# C++ Testing (Agent Skill)
+
+Agent-focused testing workflow for modern C++ (C++17/20) using GoogleTest/GoogleMock with CMake/CTest.
+
+## When to Use
+
+- Writing new C++ tests or fixing existing tests
+- Designing unit/integration test coverage for C++ components
+- Adding test coverage, CI gating, or regression protection
+- Configuring CMake/CTest workflows for consistent execution
+- Investigating test failures or flaky behavior
+- Enabling sanitizers for memory/race diagnostics
+
+### When NOT to Use
+
+- Implementing new product features without test changes
+- Large-scale refactors unrelated to test coverage or failures
+- Performance tuning without test regressions to validate
+- Non-C++ projects or non-test tasks
+
+## Core Concepts
+
+- **TDD loop**: red → green → refactor (tests first, minimal fix, then cleanups).
+- **Isolation**: prefer dependency injection and fakes over global state.
+- **Test layout**: `tests/unit`, `tests/integration`, `tests/testdata`.
+- **Mocks vs fakes**: mock for interactions, fake for stateful behavior.
+- **CTest discovery**: use `gtest_discover_tests()` for stable test discovery.
+- **CI signal**: run subset first, then full suite with `--output-on-failure`.
+
+## TDD Workflow
+
+Follow the RED → GREEN → REFACTOR loop:
+
+1. **RED**: write a failing test that captures the new behavior
+2. **GREEN**: implement the smallest change to pass
+3. **REFACTOR**: clean up while tests stay green
+
+```cpp
+// tests/add_test.cpp
+#include <gtest/gtest.h>
+
+int Add(int a, int b); // Provided by production code.
+
+TEST(AddTest, AddsTwoNumbers) { // RED
+  EXPECT_EQ(Add(2, 3), 5);
+}
+
+// src/add.cpp
+int Add(int a, int b) { // GREEN
+  return a + b;
+}
+
+// REFACTOR: simplify/rename once tests pass
+```
+
+## Code Examples
+
+### Basic Unit Test (gtest)
+
+```cpp
+// tests/calculator_test.cpp
+#include <gtest/gtest.h>
+
+int Add(int a, int b); // Provided by production code.
+
+TEST(CalculatorTest, AddsTwoNumbers) {
+    EXPECT_EQ(Add(2, 3), 5);
+}
+```
+
+### Fixture (gtest)
+
+```cpp
+// tests/user_store_test.cpp
+// Pseudocode stub: replace UserStore/User with project types.
+#include <gtest/gtest.h>
+#include <memory>
+#include <optional>
+#include <string>
+
+struct User { std::string name; };
+class UserStore {
+public:
+    explicit UserStore(std::string /*path*/) {}
+    void Seed(std::initializer_list<User> /*users*/) {}
+    std::optional<User> Find(const std::string &/*name*/) { return User{"alice"}; }
+};
+
+class UserStoreTest : public ::testing::Test {
+protected:
+    void SetUp() override {
+        store = std::make_unique<UserStore>(":memory:");
+        store->Seed({{"alice"}, {"bob"}});
+    }
+
+    std::unique_ptr<UserStore> store;
+};
+
+TEST_F(UserStoreTest, FindsExistingUser) {
+    auto user = store->Find("alice");
+    ASSERT_TRUE(user.has_value());
+    EXPECT_EQ(user->name, "alice");
+}
+```
+
+### Mock (gmock)
+
+```cpp
+// tests/notifier_test.cpp
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+#include <string>
+
+class Notifier {
+public:
+    virtual ~Notifier() = default;
+    virtual void Send(const std::string &message) = 0;
+};
+
+class MockNotifier : public Notifier {
+public:
+    MOCK_METHOD(void, Send, (const std::string &message), (override));
+};
+
+class Service {
+public:
+    explicit Service(Notifier &notifier) : notifier_(notifier) {}
+    void Publish(const std::string &message) { notifier_.Send(message); }
+
+private:
+    Notifier &notifier_;
+};
+
+TEST(ServiceTest, SendsNotifications) {
+    MockNotifier notifier;
+    Service service(notifier);
+
+    EXPECT_CALL(notifier, Send("hello")).Times(1);
+    service.Publish("hello");
+}
+```
+
+### CMake/CTest Quickstart
+
+```cmake
+# CMakeLists.txt (excerpt)
+cmake_minimum_required(VERSION 3.20)
+project(example LANGUAGES CXX)
+
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+include(FetchContent)
+# Prefer project-locked versions. If using a tag, use a pinned version per project policy.
+set(GTEST_VERSION v1.17.0) # Adjust to project policy.
+FetchContent_Declare(
+  googletest
+  URL https://github.com/google/googletest/archive/refs/tags/${GTEST_VERSION}.zip
+)
+FetchContent_MakeAvailable(googletest)
+
+add_executable(example_tests
+  tests/calculator_test.cpp
+  src/calculator.cpp
+)
+target_link_libraries(example_tests GTest::gtest GTest::gmock GTest::gtest_main)
+
+enable_testing()
+include(GoogleTest)
+gtest_discover_tests(example_tests)
+```
+
+```bash
+cmake -S . -B build -DCMAKE_BUILD_TYPE=Debug
+cmake --build build -j
+ctest --test-dir build --output-on-failure
+```
+
+## Running Tests
+
+```bash
+ctest --test-dir build --output-on-failure
+ctest --test-dir build -R ClampTest
+ctest --test-dir build -R "UserStoreTest.*" --output-on-failure
+```
+
+```bash
+./build/example_tests --gtest_filter=ClampTest.*
+./build/example_tests --gtest_filter=UserStoreTest.FindsExistingUser
+```
+
+## Debugging Failures
+
+1. Re-run the single failing test with gtest filter.
+2. Add scoped logging around the failing assertion.
+3. Re-run with sanitizers enabled.
+4. Expand to full suite once the root cause is fixed.
+
+## Coverage
+
+Prefer target-level settings instead of global flags.
+
+```cmake
+option(ENABLE_COVERAGE "Enable coverage flags" OFF)
+
+if(ENABLE_COVERAGE)
+  if(CMAKE_CXX_COMPILER_ID MATCHES "GNU")
+    target_compile_options(example_tests PRIVATE --coverage)
+    target_link_options(example_tests PRIVATE --coverage)
+  elseif(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
+    target_compile_options(example_tests PRIVATE -fprofile-instr-generate -fcoverage-mapping)
+    target_link_options(example_tests PRIVATE -fprofile-instr-generate)
+  endif()
+endif()
+```
+
+GCC + gcov + lcov:
+
+```bash
+cmake -S . -B build-cov -DENABLE_COVERAGE=ON
+cmake --build build-cov -j
+ctest --test-dir build-cov
+lcov --capture --directory build-cov --output-file coverage.info
+lcov --remove coverage.info '/usr/*' --output-file coverage.info
+genhtml coverage.info --output-directory coverage
+```
+
+Clang + llvm-cov:
+
+```bash
+cmake -S . -B build-llvm -DENABLE_COVERAGE=ON -DCMAKE_CXX_COMPILER=clang++
+cmake --build build-llvm -j
+LLVM_PROFILE_FILE="build-llvm/default.profraw" ctest --test-dir build-llvm
+llvm-profdata merge -sparse build-llvm/default.profraw -o build-llvm/default.profdata
+llvm-cov report build-llvm/example_tests -instr-profile=build-llvm/default.profdata
+```
+
+## Sanitizers
+
+```cmake
+option(ENABLE_ASAN "Enable AddressSanitizer" OFF)
+option(ENABLE_UBSAN "Enable UndefinedBehaviorSanitizer" OFF)
+option(ENABLE_TSAN "Enable ThreadSanitizer" OFF)
+
+if(ENABLE_ASAN)
+  add_compile_options(-fsanitize=address -fno-omit-frame-pointer)
+  add_link_options(-fsanitize=address)
+endif()
+if(ENABLE_UBSAN)
+  add_compile_options(-fsanitize=undefined -fno-omit-frame-pointer)
+  add_link_options(-fsanitize=undefined)
+endif()
+if(ENABLE_TSAN)
+  add_compile_options(-fsanitize=thread)
+  add_link_options(-fsanitize=thread)
+endif()
+```
+
+## Flaky Tests Guardrails
+
+- Never use `sleep` for synchronization; use condition variables or latches.
+- Make temp directories unique per test and always clean them.
+- Avoid real time, network, or filesystem dependencies in unit tests.
+- Use deterministic seeds for randomized inputs.
+
+## Best Practices
+
+### DO
+
+- Keep tests deterministic and isolated
+- Prefer dependency injection over globals
+- Use `ASSERT_*` for preconditions, `EXPECT_*` for multiple checks
+- Separate unit vs integration tests in CTest labels or directories
+- Run sanitizers in CI for memory and race detection
+
+### DON'T
+
+- Don't depend on real time or network in unit tests
+- Don't use sleeps as synchronization when a condition variable can be used
+- Don't over-mock simple value objects
+- Don't use brittle string matching for non-critical logs
+
+### Common Pitfalls
+
+- **Using fixed temp paths** → Generate unique temp directories per test and clean them.
+- **Relying on wall clock time** → Inject a clock or use fake time sources.
+- **Flaky concurrency tests** → Use condition variables/latches and bounded waits.
+- **Hidden global state** → Reset global state in fixtures or remove globals.
+- **Over-mocking** → Prefer fakes for stateful behavior and only mock interactions.
+- **Missing sanitizer runs** → Add ASan/UBSan/TSan builds in CI.
+- **Coverage on debug-only builds** → Ensure coverage targets use consistent flags.
+
+## Optional Appendix: Fuzzing / Property Testing
+
+Only use if the project already supports LLVM/libFuzzer or a property-testing library.
+
+- **libFuzzer**: best for pure functions with minimal I/O.
+- **RapidCheck**: property-based tests to validate invariants.
+
+Minimal libFuzzer harness (pseudocode: replace ParseConfig):
+
+```cpp
+#include <cstddef>
+#include <cstdint>
+#include <string>
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
+    std::string input(reinterpret_cast<const char *>(data), size);
+    // ParseConfig(input); // project function
+    return 0;
+}
+```
+
+## Alternatives to GoogleTest
+
+- **Catch2**: header-only, expressive matchers
+- **doctest**: lightweight, minimal compile overhead

.cursor/skills/django-verification/SKILL.md

@@ -1,6 +1,6 @@
 ---
 name: django-verification
-description: Verification loop for Django projects: migrations, linting, tests with coverage, security scans, and deployment readiness checks before release or PR.
+description: "Verification loop for Django projects: migrations, linting, tests with coverage, security scans, and deployment readiness checks before release or PR."
 ---
 
 # Django Verification Loop

.cursor/skills/java-coding-standards/SKILL.md

@@ -1,6 +1,6 @@
 ---
 name: java-coding-standards
-description: Java coding standards for Spring Boot services: naming, immutability, Optional usage, streams, exceptions, generics, and project layout.
+description: "Java coding standards for Spring Boot services: naming, immutability, Optional usage, streams, exceptions, generics, and project layout."
 ---
 
 # Java Coding Standards

.cursor/skills/nutrient-document-processing/SKILL.md

@@ -9,7 +9,7 @@ Process documents with the [Nutrient DWS Processor API](https://www.nutrient.io/
 
 ## Setup
 
-Get a free API key at **https://dashboard.nutrient.io/sign_up/?product=processor**
+Get a free API key at **[nutrient.io](https://dashboard.nutrient.io/sign_up/?product=processor)**
 
 ```bash
 export NUTRIENT_API_KEY="pdf_live_..."

.cursor/skills/project-guidelines-example/SKILL.md

@@ -1,11 +1,14 @@
+---
+name: project-guidelines-example
+description: "Example project-specific skill template based on a real production application."
+---
+
 # Project Guidelines Skill (Example)
 
 This is an example of a project-specific skill. Use this as a template for your own projects.
 
 Based on a real production application: [Zenith](https://zenith.chat) - AI-powered customer discovery platform.
 
----
-
 ## When to Use
 
 Reference this skill when working on the specific project it's designed for. Project skills contain:

.cursor/skills/security-scan/SKILL.md

@@ -0,0 +1,164 @@
+---
+name: security-scan
+description: Scan your Claude Code configuration (.claude/ directory) for security vulnerabilities, misconfigurations, and injection risks using AgentShield. Checks CLAUDE.md, settings.json, MCP servers, hooks, and agent definitions.
+---
+
+# Security Scan Skill
+
+Audit your Claude Code configuration for security issues using [AgentShield](https://github.com/affaan-m/agentshield).
+
+## When to Activate
+
+- Setting up a new Claude Code project
+- After modifying `.claude/settings.json`, `CLAUDE.md`, or MCP configs
+- Before committing configuration changes
+- When onboarding to a new repository with existing Claude Code configs
+- Periodic security hygiene checks
+
+## What It Scans
+
+| File | Checks |
+|------|--------|
+| `CLAUDE.md` | Hardcoded secrets, auto-run instructions, prompt injection patterns |
+| `settings.json` | Overly permissive allow lists, missing deny lists, dangerous bypass flags |
+| `mcp.json` | Risky MCP servers, hardcoded env secrets, npx supply chain risks |
+| `hooks/` | Command injection via interpolation, data exfiltration, silent error suppression |
+| `agents/*.md` | Unrestricted tool access, prompt injection surface, missing model specs |
+
+## Prerequisites
+
+AgentShield must be installed. Check and install if needed:
+
+```bash
+# Check if installed
+npx ecc-agentshield --version
+
+# Install globally (recommended)
+npm install -g ecc-agentshield
+
+# Or run directly via npx (no install needed)
+npx ecc-agentshield scan .
+```
+
+## Usage
+
+### Basic Scan
+
+Run against the current project's `.claude/` directory:
+
+```bash
+# Scan current project
+npx ecc-agentshield scan
+
+# Scan a specific path
+npx ecc-agentshield scan --path /path/to/.claude
+
+# Scan with minimum severity filter
+npx ecc-agentshield scan --min-severity medium
+```
+
+### Output Formats
+
+```bash
+# Terminal output (default) — colored report with grade
+npx ecc-agentshield scan
+
+# JSON — for CI/CD integration
+npx ecc-agentshield scan --format json
+
+# Markdown — for documentation
+npx ecc-agentshield scan --format markdown
+
+# HTML — self-contained dark-theme report
+npx ecc-agentshield scan --format html > security-report.html
+```
+
+### Auto-Fix
+
+Apply safe fixes automatically (only fixes marked as auto-fixable):
+
+```bash
+npx ecc-agentshield scan --fix
+```
+
+This will:
+- Replace hardcoded secrets with environment variable references
+- Tighten wildcard permissions to scoped alternatives
+- Never modify manual-only suggestions
+
+### Opus 4.6 Deep Analysis
+
+Run the adversarial three-agent pipeline for deeper analysis:
+
+```bash
+# Requires ANTHROPIC_API_KEY
+export ANTHROPIC_API_KEY=your-key
+npx ecc-agentshield scan --opus --stream
+```
+
+This runs:
+1. **Attacker (Red Team)** — finds attack vectors
+2. **Defender (Blue Team)** — recommends hardening
+3. **Auditor (Final Verdict)** — synthesizes both perspectives
+
+### Initialize Secure Config
+
+Scaffold a new secure `.claude/` configuration from scratch:
+
+```bash
+npx ecc-agentshield init
+```
+
+Creates:
+- `settings.json` with scoped permissions and deny list
+- `CLAUDE.md` with security best practices
+- `mcp.json` placeholder
+
+### GitHub Action
+
+Add to your CI pipeline:
+
+```yaml
+- uses: affaan-m/agentshield@v1
+  with:
+    path: '.'
+    min-severity: 'medium'
+    fail-on-findings: true
+```
+
+## Severity Levels
+
+| Grade | Score | Meaning |
+|-------|-------|---------|
+| A | 90-100 | Secure configuration |
+| B | 75-89 | Minor issues |
+| C | 60-74 | Needs attention |
+| D | 40-59 | Significant risks |
+| F | 0-39 | Critical vulnerabilities |
+
+## Interpreting Results
+
+### Critical Findings (fix immediately)
+- Hardcoded API keys or tokens in config files
+- `Bash(*)` in the allow list (unrestricted shell access)
+- Command injection in hooks via `${file}` interpolation
+- Shell-running MCP servers
+
+### High Findings (fix before production)
+- Auto-run instructions in CLAUDE.md (prompt injection vector)
+- Missing deny lists in permissions
+- Agents with unnecessary Bash access
+
+### Medium Findings (recommended)
+- Silent error suppression in hooks (`2>/dev/null`, `|| true`)
+- Missing PreToolUse security hooks
+- `npx -y` auto-install in MCP server configs
+
+### Info Findings (awareness)
+- Missing descriptions on MCP servers
+- Prohibitive instructions correctly flagged as good practice
+
+## Links
+
+- **GitHub**: [github.com/affaan-m/agentshield](https://github.com/affaan-m/agentshield)
+- **npm**: [npmjs.com/package/ecc-agentshield](https://www.npmjs.com/package/ecc-agentshield)

.cursor/skills/springboot-security/SKILL.md

@@ -42,17 +42,88 @@ public class JwtAuthFilter extends OncePerRequestFilter {
 - Use `@PreAuthorize("hasRole('ADMIN')")` or `@PreAuthorize("@authz.canEdit(#id)")`
 - Deny by default; expose only required scopes
 
+```java
+@RestController
+@RequestMapping("/api/admin")
+public class AdminController {
+
+  @PreAuthorize("hasRole('ADMIN')")
+  @GetMapping("/users")
+  public List<UserDto> listUsers() {
+    return userService.findAll();
+  }
+
+  @PreAuthorize("@authz.isOwner(#id, authentication)")
+  @DeleteMapping("/users/{id}")
+  public ResponseEntity<Void> deleteUser(@PathVariable Long id) {
+    userService.delete(id);
+    return ResponseEntity.noContent().build();
+  }
+}
+```
+
 ## Input Validation
 
 - Use Bean Validation with `@Valid` on controllers
 - Apply constraints on DTOs: `@NotBlank`, `@Email`, `@Size`, custom validators
 - Sanitize any HTML with a whitelist before rendering
 
+```java
+// BAD: No validation
+@PostMapping("/users")
+public User createUser(@RequestBody UserDto dto) {
+  return userService.create(dto);
+}
+
+// GOOD: Validated DTO
+public record CreateUserDto(
+    @NotBlank @Size(max = 100) String name,
+    @NotBlank @Email String email,
+    @NotNull @Min(0) @Max(150) Integer age
+) {}
+
+@PostMapping("/users")
+public ResponseEntity<UserDto> createUser(@Valid @RequestBody CreateUserDto dto) {
+  return ResponseEntity.status(HttpStatus.CREATED)
+      .body(userService.create(dto));
+}
+```
+
 ## SQL Injection Prevention
 
 - Use Spring Data repositories or parameterized queries
 - For native queries, use `:param` bindings; never concatenate strings
 
+```java
+// BAD: String concatenation in native query
+@Query(value = "SELECT * FROM users WHERE name = '" + name + "'", nativeQuery = true)
+
+// GOOD: Parameterized native query
+@Query(value = "SELECT * FROM users WHERE name = :name", nativeQuery = true)
+List<User> findByName(@Param("name") String name);
+
+// GOOD: Spring Data derived query (auto-parameterized)
+List<User> findByEmailAndActiveTrue(String email);
+```
+
+## Password Encoding
+
+- Always hash passwords with BCrypt or Argon2 — never store plaintext
+- Use `PasswordEncoder` bean, not manual hashing
+
+```java
+@Bean
+public PasswordEncoder passwordEncoder() {
+  return new BCryptPasswordEncoder(12); // cost factor 12
+}
+
+// In service
+public User register(CreateUserDto dto) {
+  String hashedPassword = passwordEncoder.encode(dto.password());
+  return userRepository.save(new User(dto.email(), hashedPassword));
+}
+```
+
 ## CSRF Protection
 
 - For browser session apps, keep CSRF enabled; include token in forms/headers
@@ -70,6 +141,25 @@ http
 - Keep `application.yml` free of credentials; use placeholders
 - Rotate tokens and DB credentials regularly
 
+```yaml
+# BAD: Hardcoded in application.yml
+spring:
+  datasource:
+    password: mySecretPassword123
+
+# GOOD: Environment variable placeholder
+spring:
+  datasource:
+    password: ${DB_PASSWORD}
+
+# GOOD: Spring Cloud Vault integration
+spring:
+  cloud:
+    vault:
+      uri: https://vault.example.com
+      token: ${VAULT_TOKEN}
+```
+
 ## Security Headers
 
 ```java
@@ -82,11 +172,63 @@ http
     .referrerPolicy(rp -> rp.policy(ReferrerPolicyHeaderWriter.ReferrerPolicy.NO_REFERRER)));
 ```
 
+## CORS Configuration
+
+- Configure CORS at the security filter level, not per-controller
+- Restrict allowed origins — never use `*` in production
+
+```java
+@Bean
+public CorsConfigurationSource corsConfigurationSource() {
+  CorsConfiguration config = new CorsConfiguration();
+  config.setAllowedOrigins(List.of("https://app.example.com"));
+  config.setAllowedMethods(List.of("GET", "POST", "PUT", "DELETE"));
+  config.setAllowedHeaders(List.of("Authorization", "Content-Type"));
+  config.setAllowCredentials(true);
+  config.setMaxAge(3600L);
+
+  UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
+  source.registerCorsConfiguration("/api/**", config);
+  return source;
+}
+
+// In SecurityFilterChain:
+http.cors(cors -> cors.configurationSource(corsConfigurationSource()));
+```
+
 ## Rate Limiting
 
 - Apply Bucket4j or gateway-level limits on expensive endpoints
 - Log and alert on bursts; return 429 with retry hints
 
+```java
+// Using Bucket4j for per-endpoint rate limiting
+@Component
+public class RateLimitFilter extends OncePerRequestFilter {
+  private final Map<String, Bucket> buckets = new ConcurrentHashMap<>();
+
+  private Bucket createBucket() {
+    return Bucket.builder()
+        .addLimit(Bandwidth.classic(100, Refill.intervally(100, Duration.ofMinutes(1))))
+        .build();
+  }
+
+  @Override
+  protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response,
+      FilterChain chain) throws ServletException, IOException {
+    String clientIp = request.getRemoteAddr();
+    Bucket bucket = buckets.computeIfAbsent(clientIp, k -> createBucket());
+
+    if (bucket.tryConsume(1)) {
+      chain.doFilter(request, response);
+    } else {
+      response.setStatus(HttpStatus.TOO_MANY_REQUESTS.value());
+      response.getWriter().write("{\"error\": \"Rate limit exceeded\"}");
+    }
+  }
+}
+```
+
 ## Dependency Security
 
 - Run OWASP Dependency Check / Snyk in CI

.cursor/skills/springboot-verification/SKILL.md

@@ -1,6 +1,6 @@
 ---
 name: springboot-verification
-description: Verification loop for Spring Boot projects: build, static analysis, tests with coverage, security scans, and diff review before release or PR.
+description: "Verification loop for Spring Boot projects: build, static analysis, tests with coverage, security scans, and diff review before release or PR."
 ---
 
 # Spring Boot Verification Loop
@@ -42,6 +42,111 @@ Report:
 - Total tests, passed/failed
 - Coverage % (lines/branches)
 
+### Unit Tests
+
+Test service logic in isolation with mocked dependencies:
+
+```java
+@ExtendWith(MockitoExtension.class)
+class UserServiceTest {
+
+  @Mock private UserRepository userRepository;
+  @InjectMocks private UserService userService;
+
+  @Test
+  void createUser_validInput_returnsUser() {
+    var dto = new CreateUserDto("Alice", "alice@example.com");
+    var expected = new User(1L, "Alice", "alice@example.com");
+    when(userRepository.save(any(User.class))).thenReturn(expected);
+
+    var result = userService.create(dto);
+
+    assertThat(result.name()).isEqualTo("Alice");
+    verify(userRepository).save(any(User.class));
+  }
+
+  @Test
+  void createUser_duplicateEmail_throwsException() {
+    var dto = new CreateUserDto("Alice", "existing@example.com");
+    when(userRepository.existsByEmail(dto.email())).thenReturn(true);
+
+    assertThatThrownBy(() -> userService.create(dto))
+        .isInstanceOf(DuplicateEmailException.class);
+  }
+}
+```
+
+### Integration Tests with Testcontainers
+
+Test against a real database instead of H2:
+
+```java
+@SpringBootTest
+@Testcontainers
+class UserRepositoryIntegrationTest {
+
+  @Container
+  static PostgreSQLContainer<?> postgres = new PostgreSQLContainer<>("postgres:16-alpine")
+      .withDatabaseName("testdb");
+
+  @DynamicPropertySource
+  static void configureProperties(DynamicPropertyRegistry registry) {
+    registry.add("spring.datasource.url", postgres::getJdbcUrl);
+    registry.add("spring.datasource.username", postgres::getUsername);
+    registry.add("spring.datasource.password", postgres::getPassword);
+  }
+
+  @Autowired private UserRepository userRepository;
+
+  @Test
+  void findByEmail_existingUser_returnsUser() {
+    userRepository.save(new User("Alice", "alice@example.com"));
+
+    var found = userRepository.findByEmail("alice@example.com");
+
+    assertThat(found).isPresent();
+    assertThat(found.get().getName()).isEqualTo("Alice");
+  }
+}
+```
+
+### API Tests with MockMvc
+
+Test controller layer with full Spring context:
+
+```java
+@WebMvcTest(UserController.class)
+class UserControllerTest {
+
+  @Autowired private MockMvc mockMvc;
+  @MockBean private UserService userService;
+
+  @Test
+  void createUser_validInput_returns201() throws Exception {
+    var user = new UserDto(1L, "Alice", "alice@example.com");
+    when(userService.create(any())).thenReturn(user);
+
+    mockMvc.perform(post("/api/users")
+            .contentType(MediaType.APPLICATION_JSON)
+            .content("""
+                {"name": "Alice", "email": "alice@example.com"}
+                """))
+        .andExpect(status().isCreated())
+        .andExpect(jsonPath("$.name").value("Alice"));
+  }
+
+  @Test
+  void createUser_invalidEmail_returns400() throws Exception {
+    mockMvc.perform(post("/api/users")
+            .contentType(MediaType.APPLICATION_JSON)
+            .content("""
+                {"name": "Alice", "email": "not-an-email"}
+                """))
+        .andExpect(status().isBadRequest());
+  }
+}
+```
+
 ## Phase 4: Security Scan
 
 ```bash
@@ -50,10 +155,27 @@ mvn org.owasp:dependency-check-maven:check
 # or
 ./gradlew dependencyCheckAnalyze
 
-# Secrets (git)
+# Secrets in source
+grep -rn "password\s*=\s*\"" src/ --include="*.java" --include="*.yml" --include="*.properties"
+grep -rn "sk-\|api_key\|secret" src/ --include="*.java" --include="*.yml"
+
+# Secrets (git history)
 git secrets --scan  # if configured
 ```
 
+### Common Security Findings
+
+```
+# Check for System.out.println (use logger instead)
+grep -rn "System\.out\.print" src/main/ --include="*.java"
+
+# Check for raw exception messages in responses
+grep -rn "e\.getMessage()" src/main/ --include="*.java"
+
+# Check for wildcard CORS
+grep -rn "allowedOrigins.*\*" src/main/ --include="*.java"
+```
+
 ## Phase 5: Lint/Format (optional gate)
 
 ```bash

.cursor/skills/verification-loop/SKILL.md

@@ -1,3 +1,8 @@
+---
+name: verification-loop
+description: "A comprehensive verification system for Claude Code sessions."
+---
+
 # Verification Loop Skill
 
 A comprehensive verification system for Claude Code sessions.