Implements visual feedback for cycle prediction accuracy in ICS calendar feeds:
- Add predictedDate field to PeriodLog type for tracking predicted vs actual dates
- POST /api/cycle/period now calculates and stores predictedDate based on
previous lastPeriodDate + cycleLength, returns daysEarly/daysLate in response
- ICS feed generates "(Predicted)" events when actual period start differs
from predicted, with descriptions like "period arrived 2 days early"
- Calendar route fetches period logs and passes them to ICS generator
This creates an accuracy feedback loop helping users understand their cycle
variability over time per calendar.md spec.
807 tests passing across 43 test files.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Add period logging endpoint that allows users to record their period start date.
This is a critical path item that unblocks GET /api/cycle/current and GET /api/today.
Features:
- Protected with withAuth middleware
- Validates startDate is present, valid format (YYYY-MM-DD), and not in future
- Updates user.lastPeriodDate in PocketBase
- Creates PeriodLog record for historical tracking
- Returns updated cycle information (cycleDay, phase)
Tests: 8 tests covering authentication, validation, database operations, and error handling.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
