Reflow Daily-use Hardening P1

[lsclin]

Summary

• make Today, Calendar, Active, and Review follow the current local day while the app stays open
• keep past calendar dates read-only and only suggest future time slots for today
• remove prototype AI/disabled affordances and clarify deterministic Review facts
• compact Inbox proposals to one primary action with row-level editing and source/time context
• limit completed history on Today and Calendar until explicitly expanded

Validation

• npm run typecheck
• npm run lint
• npm test (161 passed)
• npm run test:gateway (45 passed)
• npm run test:e2e (21 passed)
• npm run export:web
• browser QA across Today, Inbox, Active, Calendar, and Review; no console errors