test: add unit tests for internal/init — driver install and removal

[jpleva91]

Problem

internal/init/init.go has zero test coverage. The init package installs chitin hooks into agent driver configs (Claude Code, Copilot, Codex, Gemini). If Run() writes bad config, users get silent governance bypass.

Acceptance Criteria

• Test Run() creates the config directory if it does not exist
• Test Run() writes the correct settings file for each driver (claude, copilot, codex, gemini)
• Test Run() creates a starter chitin.yaml if missing
• Test Run() skips chitin.yaml if it already exists
• Test Run() creates .chitin-identity file
• Test Run() in global mode uses the global config dir
• Test Run() returns error for unknown driver name
• Test Remove() deletes the settings file
• Test Remove() returns error for unknown driver name
• All tests use t.TempDir() for filesystem isolation
• All tests pass with go test ./internal/init/...

Hints

• File: internal/init/init.go
• Functions: Run(driverName string, global bool, projectDir string), Remove(driverName string, global bool, projectDir string)
• Templates in internal/init/templates.go: ClaudeSettings, CopilotHooks, CodexHooks, GeminiSettings, StarterPolicy
• Driver map: Drivers — keys are "claude", "copilot", "codex", "gemini"
• Create test file: internal/init/init_test.go

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[jpleva91]

🧠 Triage complete

Tier B — Needs Planning. Issue requires scoping and decomposition before implementation.

Reason: triage error (defaulting to safe): API returned 404: {"type":"error","error":{"type":"not_found_error","message":"model: claude-3-haiku-20241022"},"request_id":"req_011CZrvHSN6QRZUC9XYtMK4C"}
Confidence: 0.00

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[jpleva91]

@claude Please implement this issue. Read the acceptance criteria carefully, check the source files mentioned in Hints, and create the test file. Run go test to verify all tests pass before finishing.

[jpleva91]

Test coverage for internal/init driver installation; medium complexity, safe to automate.

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Generated by Claude Code

[jpleva91]

Execution Plan

Files:

• Create: internal/init/init_test.go
• Read (source): internal/init/init.go, internal/init/templates.go

Steps:

1. Create internal/init/init_test.go in package init with table-driven tests using t.TempDir() for isolation
2. Test Run() creates the config directory if it does not exist (all four drivers: claude, copilot, codex, gemini)
3. Test Run() writes the correct settings file content for each driver (match against template constants)
4. Test Run() creates a starter chitin.yaml when missing
5. Test Run() skips chitin.yaml when it already exists (file content unchanged)
6. Test Run() creates .chitin-identity file with format <driver>:agent:developer\n
7. Test Run() in global mode (global=true) uses d.GlobalDir rather than projectDir/d.ConfigDir
8. Test Run() returns error for an unknown driver name
9. Test Remove() deletes the settings file for each driver
10. Test Remove() returns error for an unknown driver name
11. Run go test ./internal/init/... — fix any failures (up to 3 attempts)
12. Run go vet ./internal/init/... — fix any warnings

Success Conditions:

• internal/init/init_test.go exists with ≥10 table-driven test cases covering all acceptance criteria
• Every acceptance criterion from the issue body has at least one test case
• go test ./internal/init/... passes
• go vet ./internal/init/... is clean
• Tests use t.TempDir() for filesystem isolation (no global state pollution)
• Tests use t.Helper() where appropriate
• All tests use t.Run() sub-tests

Estimated Complexity: medium

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Generated by Claude Code