[max-sixty]

This follows the first test-simplification tranche by converging the remaining suite around distinct semantic and pragmatic contracts rather than raw case count. The branch removes false-confidence tests, invalid setup variants, repetitive snapshots, and expensive PTY overlap while strengthening the retained route, precondition, and interaction proofs.

What changed

• Replace obsolete CI-status integration mocks and blank snapshots with direct provider semantics, mixed-priority cases, and strict GitHub/GitLab route assertions.
• Remove free-riding merge, push, remove, list, security, config, and switch cases whose setup never reached the named behavior; consolidate repetitive direct cases into labeled tables.
• Reduce the switch picker from 42 PTYs to 19 distinct terminal contracts, using causal release gates for asynchronous loading and repaint behavior.
• Add a cached main-only picker fixture, eliminating 138 unnecessary Git subprocesses across the retained PTYs, and integrate it with main's generated hermetic standard fixture.
• Tighten test guidance around proving setup preconditions and mock invocation routes, and correct the comments-tab help text and generated mirrors.

Reviewer map

• tests/integration_tests/ci_status.rs and src/commands/list/ci_status/: provider semantics and route coverage.
• tests/integration_tests/switch_picker.rs, src/commands/picker/, and src/testing/: retained PTY contracts, causal mocks, and fixture design.
• tests/integration_tests/config_show.rs, src/config/deprecation.rs, src/config/expansion.rs, and worktree type/resolve tests: direct-boundary consolidation.
• tests/CLAUDE.md: the testing rules extracted from the false-confidence cases found during the survey.

The measured loop removed 98 tests, 65 snapshots, and 23 picker PTYs. Controlled warm Nextest execution improved from a 79.593-second mean to 72.574 seconds (8.8%), while comparable production-line coverage moved from 97.32% to 97.23%. The tracked PR diff is a net deletion of more than 5,700 lines.

Validation

• cargo run -- hook pre-merge --yes after syncing current main: 4,468 passed, one configured skip; docs, doctests, clippy, formatting, policy checks, and snapshots green.
• task coverage on the completed change before the base sync: 4,465 passed, one configured skip; 97.23% comparable production-line coverage.
• Three independent final audits found no remaining lost beliefs, fixture hazards, or safe PTY consolidations.

This was written by Claude Code on behalf of max.