Python's sqlite3.executescript() has a bug where trailing newlines after
the final semicolon create empty statements. When APSW's log_sqlite() is
enabled (via apswutils, imported by fastmigrate), these cause visible
"API called with NULL prepared statement" errors during interpreter shutdown.
- Strip trailing newlines from all 9 existing migration files
- Update migration template to end with semicolon, no trailing newline
- Document the requirement in CLAUDE.md
🤖 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>
