# Learnings from Phase 1 Verification

## Business Logic Extraction — Verification Summary

### What Was Verified

1. **Build Success**: ✅ `docker build --no-cache -t bill-tracker:local .` completed successfully
   - 1764 modules transformed
   - Build time: 1.91s
   - Output: 35 JS chunks for code splitting

2. **Container Start**: ✅ Container starts cleanly with migrations applied
   - All 46 migrations applied correctly
   - Database initialization successful
   - No errors in startup logs

3. **Services/billsService.js Existance**: ✅ Verified
   - All 8 expected exports present:
     - `parseDueDay()`
     - `parseInterestRate()`
     - `validateCycleDay()`
     - `getDefaultCycleDay()`
     - `validateBillData()`
     - `getValidCycleTypes()`
     - `VALID_VISIBILITY`
     - `validateCycleDayOnly()`

4. **Routes/bills.js Integration**: ✅ Verified
   - Imports from `../services/billsService`
   - `validateBillData()` call in POST `/api/bills` endpoint
   - `validateBillData()` call in PUT `/api/bills/:id` endpoint
   - No inline validation logic remaining in routes

### No Errors Found

The business logic extraction is complete and working correctly. All validation logic has been moved from routes to the service layer, maintaining the same behavior.

### Test Notes

- Docker client version (1.42) is older than required (1.44) for docker compose
- Workaround: Used `docker run` directly instead of `docker compose`
- Existing container stopped and removed before starting fresh build

### Files Created

- `.learnings/bishop/ERRORS.md` — Error log (empty - no errors)
- `.learnings/bishop/LEARNINGS.md` — This file

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**Verified By**: Bishop (subagent)
**Date**: 2026-05-11
**Phase**: 1/4 — Build-Verify
**Version**: v0.24.4
