Test infrastructure release that closes the source-vs-bundle gap demonstrated by 1.5.1 → 1.5.2 hotfix.

Test infrastructure release that closes the source-vs-bundle gap demonstrated by 1.5.1 → 1.5.2 hotfix. Pre-1.5.3, init-end-to-end.test.ts ran against TS source via vitest where __dirname resolves at src/commands/-depth; production dist/cli.js has different depth and was failing the same scenarios despite the in-repo test being green. 1.5.3 ships a tarball-level e2e test that catches this entire class of bug.

Daemon code unchanged — 1.5.0 48 h soak verdict applies to 1.5.3.

Added

• init-tarball-e2e.test.ts — runs npm pack + clean install + spawns <install>/node_modules/.bin/massu init against each Phase 7 fixture in tmpdir, then asserts the same field-by-field expectations the source-level test asserts. Plus 3 tarball-shape gates: dist/cli.js exists, templates/<id>/massu.config.yaml is well-formed YAML for every present id, <bin>/massu --version matches package.json:version. Tag-gated via MASSU_TARBALL_E2E=1 env var so it runs in CI but not in local npm test by default.
• Shared fixture module src/tests/fixtures/phase7-init-fixtures.ts — single source for the 5-fixture test data consumed by BOTH init-end-to-end.test.ts AND init-tarball-e2e.test.ts. Adding a new framework = ONE entry that BOTH tests pick up.
• resolve-templates-dir-bundle-path.test.ts — 4 unit tests that explicitly catch the 1.5.2 path-off-by-one regression class. Sets up both bundled-cli (<pkg>/dist/cli.js) and legacy-nested (<pkg>/dist/commands/init.js) layouts in tmpdir; asserts the candidate-list logic resolves correctly in each. Future builds that move cli.js to a different depth fail this test before reaching the tarball test.
• Hermetic build in tarball-e2e — beforeAll runs npm run build before npm pack so the test never reads a stale dist/ from a previous build.

Verification

• npx tsc --noEmit: 0 errors
• npm test: 2079/2079 + 4 new (resolve-templates-dir) = 2083 source-level tests pass
• MASSU_TARBALL_E2E=1 npm test: +8 tarball-level tests (5 fixtures + 3 shape gates) pass against the actual built bundle
• bash scripts/massu-pattern-scanner.sh: PASS
• bash scripts/massu-generalization-scanner.sh: PASS

Known follow-on

• AST adapter introspect output piping (detected.<adapter-id>: block) — Plan 1.5.4 (docs/plans/2026-05-08-ast-introspect-piping.md). Hard prerequisite met now (1.5.3 ships the tarball-e2e gate that 1.5.4's variant-template-style changes need to validate against).