# Specification Quality Checklist: Browser No-Drift Regression Guard

**Purpose**: Validate preparation completeness and quality before implementation.
**Created**: 2026-05-17
**Feature**: `specs/322-browser-no-drift-regression-guard/spec.md`

## Content Quality

- [x] Spec Candidate Check is completed.
- [x] The selected candidate is direct user-provided manual promotion.
- [x] Related completed specs are treated as historical context and not rewritten.
- [x] The scope is focused on durable guards and no-drift regression coverage.
- [x] No application implementation is included in preparation artifacts.
- [x] No migration, seeder, package, env var, queue, scheduler, storage, or deployment asset change is planned.

## Requirement Completeness

- [x] No `[NEEDS CLARIFICATION]` markers remain.
- [x] Functional requirements are testable and unambiguous.
- [x] Non-functional requirements cover browser stability, lane cost, fixture cost, and no Playwright MCP dependency.
- [x] Success criteria are measurable by artifacts and test results.
- [x] All user stories include independent test descriptions and acceptance scenarios.
- [x] Edge cases cover cross-workspace IDs, legacy aliases, stale state, back/forward, old clean URLs, and browser blockers.
- [x] Dependencies and assumptions are identified.

## Feature Readiness

- [x] `spec.md` exists.
- [x] `plan.md` exists.
- [x] `tasks.md` exists.
- [x] `test-plan.md` exists.
- [x] `coverage-manifest.md` exists.
- [x] Screenshots artifact directory is represented by `.gitkeep`.
- [x] Tasks are ordered, small, and verifiable.
- [x] Tasks include Feature/static guards and Browser guard coverage.
- [x] Tasks include validation commands and final report obligations.
- [x] Tasks include explicit non-goals and stop conditions.

## Constitution / Repo Alignment

- [x] Workspace isolation and cross-workspace rejection are explicit.
- [x] Legacy Tenant aliases remain invalid and no compatibility layer is allowed.
- [x] Provider Tenant terminology remains provider-boundary only.
- [x] Proportionality review covers the new test/manifest ownership cost.
- [x] Test governance names Browser lane expansion and fixture/helper cost controls.
- [x] Filament v5 / Livewire v4 compliance is explicitly addressed.
- [x] Provider registration location remains `apps/platform/bootstrap/providers.php`; no provider change is planned.
- [x] Global search and destructive action output-contract points are addressed.
- [x] Asset strategy is explicit; no `filament:assets` deployment change is planned.

## Preparation Analysis Outcome

- [x] Preparation artifacts are internally consistent after review.
- [x] No preparation issue requires application implementation.
- [x] No open question blocks implementation.

## Notes

Runtime acceptance remains pending until implementation, targeted Feature/static tests, targeted Browser tests, formatting, and `git diff --check` are completed.