Jean-Luc Makiola 93ca38d974 feat(contacts): declare READ_CONTACTS + read contact special-dates ...

Codeberg #15, foundation for the contact special-dates calendars. Declares the
optional, feature-gated READ_CONTACTS permission (never requested at startup)
and adds the offline, read-only contacts reader.

- AndroidManifest: READ_CONTACTS with a comment documenting the opt-in/offline
  one-way-mirror contract.
- domain/contacts: SpecialDateType + ContactSpecialDate model and a pure
  parseContactEventDate covering full (yyyy-MM-dd), year-less (--MM-dd) and
  compact (yyyyMMdd) shapes, with Feb-29 handling via a leap anchor.
- data/contacts: ContactSpecialDatesDataSource querying ContactsContract.Data
  Event rows, split by TYPE, deduped per (contact, type); returns empty without
  the permission so sync can degrade to a stalled state. Hilt-bound.
- Unit tests for the date parser (full/year-less/compact/Feb-29/malformed).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

2026-07-01 10:19:42 +02:00

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