Sync wiki with shipped Phase 0-5 work; add themed Phase 7-10 proposals
Roadmap.md: consolidate Phases 0-5 into concise completed-phase summaries
(matching Phase 0's style), removing the duplicated in-progress/next-phase
sections left over from earlier sessions. Add Phase 7 (longitudinal
insight), 8 (collaboration/department workflow), 9 (accessibility/reach),
and 10 (data portability) as themed proposals following Phase 6.
Features.md: document Tests, Vocabulary Dashboard, Peer Review Analytics,
Activity Dashboard, multi-class Compare statistics, Admin Dashboard,
Accessibility, and Help/Tours - all shipped but undocumented.
Architecture.md, Data-and-Privacy.md, Supabase-Sync.md,
Development-Guide.md, Contributing.md: fix stale facts (dependency
versions, locale file lists, migration count, the no-sync-mechanism /
Tailwind claims that contradicted the current app) and list newer
services/pages/tables.
docs: Phase 2.3 wiki cleanup - Cambridge/themes guides, LWW sync strategy
Adds user-facing docs for the Cambridge exam labels and theme bundles
shipped in PR #128, documents the LWW conflict-resolution strategy and
its limits in Supabase-Sync.md, and resolves the stale "#38/#39/#40
marked Planned" roadmap note (nothing else references those numbers).
docs: document Supabase sync feature (PR #17)
Adds a new Supabase-Sync page covering local and cloud setup, the
database schema, authentication flow, and sharing. Updates Home,
Installation, Features, Architecture, Data-and-Privacy, and
Development Guide to reflect the optional sync layer and new /privacy
route.