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A chronological breakdown of every implementation session from the cookie rapid prototyping case study. Each commit represents a focused, context-window-sized chunk of work.


All Sessions (Chronological)

Date Commit Description
2026-01-07 14:28 4c3bda9 Phase 1 Session A: Django + Docker + nginx setup
Foundation first. Django 5.x, Docker Compose, gunicorn, nginx reverse proxy, health endpoint. No features yet - just infrastructure that won't need revisiting.
2026-01-07 14:34 f039cae Phase 1 Session B: Models + API + middleware
AppSettings singleton, Profile model with CRUD API, device detection middleware for iOS 9. 10 tests passing.
2026-01-07 14:38 3ec5e46 Phase 1 Session C: bin/dev helper script
Developer experience tooling. Commands: up/down, test, shell, manage, logs, migrate. Small session - completes Phase 1.
2026-01-07 14:43 3a88893 Phase 2 Session A: Recipe + SearchSource models
Recipe model with full recipe-scrapers field support. Data migration populates 15 curated search sources. 21 tests.
2026-01-07 14:51 2d97811 Phase 2 Session B: Scraper service + image download
Async scraper with curl_cffi browser impersonation, anti-bot evasion via browser profile rotation. 53 tests. Claude implemented sophisticated fingerprint spoofing without being asked.
2026-01-07 14:57 ecfcff8 Phase 2 Session C: Recipe API + search service
Multi-site concurrent search (max 10 parallel), fallback HTML parsing, maintenance tracking for failing sources.
2026-01-07 15:04 9b0401d Phase 2 Session D: Search API + tests
23 tests for search service, 19 for recipe API. All 95 tests passing. Phase 2 complete.
2026-01-07 15:11 fca7bcf Phase 3 Session A: Favorites, Collections, History models + API
Full user feature models scoped to current profile. Helper utility get_current_profile(request) for consistent profile handling.
2026-01-07 15:26 4de84dc Phase 3 Session B: Data isolation + theme sync + tests
Profile-based data isolation, remix visibility rules (only visible to creator). Bonus: Figma theme sync tooling with CLI. 129 tests.
2026-01-07 16:34 89da168 Phase 4 Session A: React frontend foundation
Vite 6 + React 18 + TypeScript + Tailwind v4.1. Typed API client, profile selector with colour picker. Docker hot reload.
2026-01-07 16:39 d1cc55c Phase 4 Session B: Home screen + recipe cards
RecipeCard component, Favorites/Discover tabs, Recently Viewed section. Extended API client.
2026-01-07 16:49 1ac1342 Phase 4 Session C: Search screen + tests
Source filter chips, pagination, URL detection for direct import. Vitest setup with 28 frontend tests. Phase 4 complete.
2026-01-07 17:01 379c54b Phase 5 Session A: Legacy frontend foundation
ES5 JavaScript for iOS 9 compatibility. Polyfills, XHR-based AJAX, session-based profile selection. -webkit prefixes throughout.
2026-01-07 17:12 de87749 Phase 5 Session B: Home screen + recipe cards
Tab toggle, recipe card partial, favourite button with AJAX. Custom template tags. iOS 9 hover effects.
2026-01-07 17:26 fb98813 Phase 5 Session C: Search + tests + iOS 9 completion
Full search with source filters, pagination, URL import. 28 new view tests. Manual iOS 9 testing verified. 157 tests total.
2026-01-07 17:41 7d94a4b Phase 6 Session A: Recipe detail screen + serving adjustment
Tabbed interface (Ingredients, Instructions, Nutrition, Tips). Conditional serving adjuster - only shown when AI available. API endpoint for settings check.
2026-01-07 17:53 6ce34b8 Phase 6 Session B: Play mode with smart timers
Full-screen cooking interface. useTimers hook, detectTimes utility parses "15 minutes" from text, browser notifications. 21 new tests.
2026-01-07 18:11 1edf76f Phase 6 Session C: Favorites + Collections UI
Full collections management, AddToCollectionDropdown component, delete confirmation dialogs. 157 backend + 49 frontend tests.
2026-01-07 18:18 77d55dd Phase 6 Session D: Tests for timer logic and collections API
26 frontend tests, 30 backend tests. Profile isolation verified. Phase 6 complete with 187 tests.
2026-01-07 18:35 3e333f9 Phase 7 Session A: Legacy recipe detail + serving adjustment
Mirrors Phase 6 React implementation. Hero image, collapsible sections, tab navigation. 14 new tests. 201 total.
2026-01-07 18:48 478dc46 Phase 7 Session B: Play mode with timers (iOS 9 CRITICAL)
Timer class with multiple simultaneous timers, Notification API with alert fallback. All ES5 syntax. 215 tests.
2026-01-07 19:01 15320f6 Phase 7 Session C: Favorites + Collections UI (iOS 9)
Dedicated screens for favorites and collections. Create modal, delete confirmation. 26 new tests. 241 tests total.
2026-01-08 17:00 3f39fb5 Phase 8A Session A: AI infrastructure with OpenRouter SDK
Complete AI service layer. AIPrompt model with 10 prompt types and 10 models. JSON schema validation for responses. 23 new tests, 264 total.
2026-01-08 17:23 428277e Phase 8A Session B: AI Settings UI for React and Legacy
Two-tab interface for both frontends. API key testing, 10 editable prompts, model selector. Warning banner when AI not configured.
2026-01-08 17:38 9c5b408 Phase 8B Sessions A+B: Recipe Remix feature
Combined session. AI-powered recipe modification with 6 contextual suggestions. New recipe created with is_remix=True. Both frontends.
2026-01-08 22:10 d02f9ee Phase 8B Session C: Recipe scaling and tips generation
ServingAdjustment model with caching per profile. +/- buttons only when AI available. Claude discovered 4 QA issues during implementation and logged them.
2026-01-09 09:56 6a1809c Phase 8B Session D: AI Discover feed and Search ranking
3 suggestion types (favorites-based, seasonal, try-new) cached 24 hours. AI-powered search relevance scoring with graceful fallback.
2026-01-09 18:46 caf0605 Phase 9 Session A: Settings screens with 4 tabs
Backend sources API, React and Legacy settings restructured: General, AI Prompts, Sources, Source Selectors. Migration populates CSS selectors for all 15 sources.
2026-01-09 19:16 28c999a Phase 9 Session B (QA-057): Search ranking prompt fix
Discovered during Session B. Changed soft "SIGNIFICANTLY higher" to explicit "NON-NEGOTIABLE" constraint for image priority.
2026-01-09 19:18 bf139f7 Phase 9 Session B (9.4): Skeleton loading states
10 new skeleton components replacing "Loading..." text. Professional loading UX across all screens.
2026-01-09 19:18 3f2f0e6 Phase 9 Session B docs: Mark tasks complete
Documentation commit tracking Session B completion.
2026-01-09 23:36 bdfe15c Phase 9 Session G (9.11): Browser fingerprint review
Security audit of anti-bot configuration. User-Agent pool verified modern, request timing has randomisation.
2026-01-10 12:59 aeef25e Phase 10 Session G: GitHub Actions polish
Tag-based Docker releases with semver tags. Path filters skip CI for docs. Dependabot with grouped updates. Auto-generated changelogs.

Summary

Phase Sessions Duration Focus
1 3 10 min Infrastructure (Django, Docker, nginx)
2 4 21 min Core recipe backend (scraping, search)
3 2 15 min User features backend (favorites, collections)
4 3 15 min React frontend
5 3 25 min Legacy frontend (iOS 9)
6 4 37 min React features (detail, timers, collections)
7 3 26 min Legacy features (iOS 9)
8A 2 23 min AI infrastructure
8B 4 ~5 hrs AI features (remix, scaling, discover)
9 4+ ~5 hrs Polish (settings, loading states, security)
10 1+ - CI/CD

Day 1 (7 Jan): Phases 1-7 - Infrastructure through both frontends Day 2 (8 Jan): Phase 8A-8B - AI infrastructure and features Day 3 (9 Jan): Phase 8B-9 - AI completion and polish Day 4 (10 Jan): Phase 10 - CI/CD and final touches

Total: 34 implementation commits across 4 days