Fix ailab.test.js hang misdiagnosis; correct stale task numbering

T-008a: /data confirmed ephemeral without a Storage Bucket, measured

T-007a: a free account can rebuild the Space — the paywall risk is closed

docs: final dossier passes correct three tasks and add a real defect

docs: client dossier returns with measurements, and a gap in NFR-3

docs: HF dossier gains real edge measurements and a build gotcha

docs: record in the PRD what the evidence resolved

docs: delivery plan, engine/command dossiers, and the ADRs they ground

docs: PRD, ADR log and feasibility spikes for the multiplayer port