# Track state for tier2_leak_prevention_20260620
# Updated by Tier 2 Tech Lead as tasks complete

[meta]
track_id = "tier2_leak_prevention_20260620"
name = "Tier 2 Sandbox File Leak Prevention (revert + 3-layer defense)"
status = "completed"
current_phase = "complete"
last_updated = "2026-06-20"

[blocked_by]
# Independent track (response to a one-off incident). No blockers.

[blocks]
# No follow-up tracks BLOCKED on this one (deferred items listed in metadata.json).

[phases]
phase_1 = { status = "completed", checkpointsha = "fab2e55b", name = "Revert the offender commit (selective)" }
phase_2 = { status = "completed", checkpointsha = "81e1fd7b", name = "Pre-commit hook + config + tests" }
phase_3 = { status = "completed", checkpointsha = "f5d8ea04", name = "Audit script + tests" }
phase_4 = { status = "completed", checkpointsha = "8f54deda", name = "Wire hook into setup_tier2_clone.ps1" }

[tasks]
# Phase 1: Revert the offender commit (selective)
t1_1 = { status = "completed", commit_sha = "fab2e55b", description = "git stash user work to safety checkpoint (stash@{0})" }
t1_2 = { status = "completed", commit_sha = "fab2e55b", description = "git revert -n 00e5a3f2 (apply without committing)" }
t1_3 = { status = "completed", commit_sha = "fab2e55b", description = "Resolve modify/delete conflict on tier2-autonomous.md (delete; file should not be in main repo)" }
t1_4 = { status = "completed", commit_sha = "fab2e55b", description = "Unstage project_history.toml + 4 throwaway scripts (out of scope per user)" }
t1_5 = { status = "completed", commit_sha = "fab2e55b", description = "Restore HEAD versions of the 5 out-of-scope files via git checkout HEAD --" }
t1_6 = { status = "completed", commit_sha = "fab2e55b", description = "Commit the surgical revert with explicit message + git note" }

# Phase 2: Pre-commit hook + config + tests
t2_1 = { status = "completed", commit_sha = "81e1fd7b", description = "Write 12 failing tests in tests/test_tier2_pre_commit_hook.py (TDD red phase)" }
t2_2 = { status = "completed", commit_sha = "81e1fd7b", description = "Implement conductor/tier2/githooks/pre-commit (POSIX sh, exits 0, auto-unstages)" }
t2_3 = { status = "completed", commit_sha = "81e1fd7b", description = "Create conductor/tier2/githooks/forbidden-files.txt with 4 specific patterns" }
t2_4 = { status = "completed", commit_sha = "81e1fd7b", description = "Debug hook: handle CRLF in config, NUL-byte pipe, git rm --cached --force for divergent index" }
t2_5 = { status = "completed", commit_sha = "81e1fd7b", description = "All 12 tests pass (green phase)" }
t2_6 = { status = "completed", commit_sha = "81e1fd7b", description = "Commit hook + config + tests with explicit message + git note" }

# Phase 3: Audit script + tests
t3_1 = { status = "completed", commit_sha = "f5d8ea04", description = "Write 13 failing tests in tests/test_audit_tier2_leaks.py (TDD red phase)" }
t3_2 = { status = "completed", commit_sha = "f5d8ea04", description = "Implement scripts/audit_tier2_leaks.py with argparse + --strict + --json modes" }
t3_3 = { status = "completed", commit_sha = "f5d8ea04", description = "Refine patterns (tier2- → tier2-autonomous) to avoid false positives on tier2-tech-lead.md" }
t3_4 = { status = "completed", commit_sha = "f5d8ea04", description = "Add SKIP_TOP_DIRS for tests/, conductor/ (canonical source + test infra not leaks)" }
t3_5 = { status = "completed", commit_sha = "f5d8ea04", description = "Refine: only report untracked + modified (tracked-clean files are legitimate main repo content)" }
t3_6 = { status = "completed", commit_sha = "f5d8ea04", description = "All 13 tests pass; manual verification on clean main repo: '[OK] No leaks detected'" }
t3_7 = { status = "completed", commit_sha = "f5d8ea04", description = "Commit audit script + tests with explicit message + git note" }

# Phase 4: Wire hook into setup_tier2_clone.ps1
t4_1 = { status = "completed", commit_sha = "8f54deda", description = "Add Copy-Item for pre-commit to scripts/tier2/setup_tier2_clone.ps1 step 4" }
t4_2 = { status = "completed", commit_sha = "8f54deda", description = "Verify existing tier-2 setup tests still pass (3 tests, TIER2_SANDBOX_TESTS=1)" }
t4_3 = { status = "completed", commit_sha = "8f54deda", description = "Commit setup script update with explicit message + git note" }

[verification]
phase_1_revert_clean = true
phase_2_hook_auto_unstages = true
phase_3_audit_detects_leaks = true
phase_4_hook_installed_by_setup = true
default_tests_all_pass = true
optin_tests_all_pass = true
no_regressions = true

[enforcement_stack]
layer_1_opencode_permission_deny_rules = "pre-existing; tier2-autonomous agent profile denies edits"
layer_2_pre_commit_hook_installed = true
layer_3_audit_script_present = true
forbidden_patterns_specific_not_prefix = true
hook_exits_0_never_blocks_commit = true

[regression_test_count]
pre_commit_hook_tests = 12
audit_script_tests = 13
existing_tier2_tests = 21
total_default_on = 25
total_opt_in = 4
total = 46
all_passing = true

[deferred]
ci_integration = "scripts/audit_tier2_leaks.py --strict not yet wired into CI pipeline (follow-up)"
tier2_branch_rebase = "tier2/result_migration_app_controller_phase6_20260619 and tier2/test_sandbox_hardening_20260619 still contain offender commit 00e5a3f2; user must rebase on origin/master@8f54deda before merging (user action)"