refactor: remove AI enforcement integration tests and SKIP_AI_ENFORCEMENT env var

Remove the AI enforcement test suite that was attempting to force AI agents
to run pre-commit checks. The approach was ineffective because AI agents
typically run 'cargo test --lib', which skips integration tests.

Changes:
- Delete tests/ai_enforcement.rs (entire test module)
- Remove SKIP_AI_ENFORCEMENT from .github/workflows/testing.yml
- Remove SKIP_AI_ENFORCEMENT from .github/workflows/coverage.yml
- Delete docs/contributing/testing/pre-commit-integration.md
- Remove pre-commit-integration reference from docs/contributing/testing/README.md
- Remove SKIP_AI_ENFORCEMENT section from docs/contributing/testing/coverage.md

Alternative approaches like Git hooks should be investigated for enforcing
pre-commit checks with remote AI agents.

Author: josecelano

.github/workflows/coverage.yml

@@ -36,14 +36,10 @@ jobs:
 
       - id: coverage-text
         name: Generate Text Coverage Summary
-        env:
-          SKIP_AI_ENFORCEMENT: 1
         run: cargo cov
 
       - id: coverage-html
         name: Generate HTML Coverage Report
-        env:
-          SKIP_AI_ENFORCEMENT: 1
         run: cargo cov-html
 
       - id: upload-coverage

.github/workflows/testing.yml

@@ -140,6 +140,4 @@ jobs:
 
       - id: test
         name: Run Unit Tests
-        env:
-          SKIP_AI_ENFORCEMENT: 1
         run: cargo test --tests --benches --examples --workspace --all-targets --all-features

docs/contributing/testing/README.md

@@ -173,7 +173,6 @@ This section provides links to specialized testing documentation organized by to
 - **[Resource Management](./resource-management.md)** - TempDir usage, test isolation, cleanup
 - **[Testing Commands](./testing-commands.md)** - Command test patterns, builders, mocks, E2E
 - **[Clock Service](./clock-service.md)** - MockClock usage for deterministic time tests
-- **[Pre-commit Integration](./pre-commit-integration.md)** - AI enforcement tests, SKIP_AI_ENFORCEMENT flag
 - **[Coverage](./coverage.md)** - Code coverage targets, tools, CI/CD workflow, and PR guidelines
 
 ## 🔗 Related Documentation

docs/contributing/testing/coverage.md

@@ -176,13 +176,13 @@ This shows coverage statistics in the terminal without generating files.
 
 All coverage commands use cargo aliases defined in `.cargo/config.toml`:
 
-| Alias | Full Command | Purpose |
-|-------|--------------|---------|
-| `cargo cov` | `cargo llvm-cov` | Basic coverage report in terminal |
-| `cargo cov-check` | `cargo llvm-cov --all-features --workspace --fail-under-lines 85` | Validate 85% threshold |
-| `cargo cov-lcov` | `cargo llvm-cov --lcov --output-path=./.coverage/lcov.info` | Generate LCOV format |
-| `cargo cov-codecov` | `cargo llvm-cov --codecov --output-path=./.coverage/codecov.json` | Generate Codecov JSON |
-| `cargo cov-html` | `cargo llvm-cov --html` | Generate HTML report |
+| Alias               | Full Command                                                      | Purpose                           |
+| ------------------- | ----------------------------------------------------------------- | --------------------------------- |
+| `cargo cov`         | `cargo llvm-cov`                                                  | Basic coverage report in terminal |
+| `cargo cov-check`   | `cargo llvm-cov --all-features --workspace --fail-under-lines 85` | Validate 85% threshold            |
+| `cargo cov-lcov`    | `cargo llvm-cov --lcov --output-path=./.coverage/lcov.info`       | Generate LCOV format              |
+| `cargo cov-codecov` | `cargo llvm-cov --codecov --output-path=./.coverage/codecov.json` | Generate Codecov JSON             |
+| `cargo cov-html`    | `cargo llvm-cov --html`                                           | Generate HTML report              |
 
 ## 🚨 Pre-commit Coverage Check
 
@@ -273,12 +273,6 @@ The workflow generates coverage in multiple formats:
 - Upload HTML report as GitHub Actions artifact
 ```
 
-### Environment Variables
-
-The workflow sets:
-
-- `SKIP_AI_ENFORCEMENT=1` - Disables AI-related test enforcement during coverage runs
-
 ### Accessing Coverage Reports
 
 #### From GitHub Actions UI