- Add FEED_GIVEN to FeedInventoryProjection with apply/revert
- Add give_feed method to FeedService
- Block feed given if no purchase exists <= ts_utc
- Validate feed type and location existence
- 13 new tests for give_feed functionality
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Implement FeedPurchased event handling:
- Add migration for feed_inventory table
- Create FeedInventoryProjection to track purchases
- Create FeedService with purchase_feed method
- Calculate price_per_kg_cents from bag details
Purchases accumulate in inventory with:
- purchased_kg, given_kg, balance_kg tracking
- Last purchase price stored in cents
- Timestamps for last purchase/given
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
