## Summary
- re-audit `docs/product/spec-candidates.md` so completed or already prepared specs are no longer exposed as active `next-best-prep` targets
- refresh `docs/product/implementation-ledger.md` to align maturity and readiness wording with current repo-backed evidence
- include the existing `spec-kit-next-best-prep` guardrail update so completed specs are not rewritten back into preparation state
## Validation
- not run (docs-only changes)
## Notes
- no files under `specs/` were modified
- no application or runtime files were modified
Co-authored-by: Ahmed Darrazi <ahmed.darrazi@live.de>
Reviewed-on: #317
## Summary
- implement spec 243 product usage adoption telemetry end-to-end
- add bounded product usage event capture, aggregation, retention pruning, and system dashboard KPIs
- add unit and feature coverage for telemetry capture, authorization, retention, privacy, and dashboard window behavior
## Validation
- ran focused Pest test suites for telemetry and system dashboard behavior
- ran Laravel Pint formatting
- verified the system dashboard telemetry widget in the integrated browser
## Notes
- branch: `243-product-usage-adoption-telemetry`
- target: `dev`
Co-authored-by: Ahmed Darrazi <ahmed.darrazi@live.de>
Reviewed-on: #281
