docs: Update README for v0.5.1 - Trial Pairing Simulator & Heat Cycle Calendar

README.md

@@ -13,6 +13,8 @@ A reactive, interactive dog breeding genealogy mapping system for professional k
 - **✅ Modern UI** - Sleek, dark-themed interface with compact info cards
 - **✅ Search & Filter** - Find dogs by name, breed, sex, and more
 - **✅ Branded Navigation** - Custom logo (br-logo.png) with gold-to-rusty-red gradient title
+- **✅ Trial Pairing Simulator** - COI calculator with common ancestors table and risk badge
+- **✅ Heat Cycle Calendar** - Month grid calendar with cycle windows and breeding date suggestions
 
 ### Database Architecture
 - **✅ Clean Schema** - No migrations, fresh installs create correct structure
@@ -23,6 +25,15 @@ A reactive, interactive dog breeding genealogy mapping system for professional k
 - **✅ Genetic Traits** - Inherited trait mapping
 
 ### Recently Added (March 9, 2026)
+- **✅ Heat Cycle Calendar** - Full month grid with color-coded cycle windows (Proestrus / Optimal / Late Estrus / Diestrus)
+- **✅ Start Cycle Modal** - Click any day or the header button to log a new heat cycle for a female
+- **✅ Breeding Date Suggestions** - Phase windows with date ranges loaded from `GET /api/breeding/heat-cycles/:id/suggestions`
+- **✅ Whelping Estimate** - Auto-calculates earliest/expected/latest whelping once a breeding date is logged
+- **✅ Trial Pairing Simulator** - `/pairing` route with sire/dam dropdowns, COI%, risk badge, and common ancestors table
+- **✅ Pairing Nav Link** - `FlaskConical` icon added to navbar
+- **✅ New API Endpoints** - `GET /api/breeding/heat-cycles`, `GET /api/breeding/heat-cycles/:id/suggestions`
+
+### Previously Added (March 9, 2026)
 - **✅ Brand Logo** - Custom `br-logo.png` in navbar replacing generic icon
 - **✅ Gradient Title** - Gold-to-rusty-red gradient on "BREEDR" brand text
 - **✅ Static Asset Serving** - `/static` directory served by Express for branding assets
@@ -30,13 +41,6 @@ A reactive, interactive dog breeding genealogy mapping system for professional k
 - **✅ Route Fix** - `/static` and `/uploads` paths no longer fall through to React catch-all
 - **✅ Logo Sizing** - Fixed brand logo to 1:1 aspect ratio square
 
-### Previously Fixed
-- **✅ Database Schema** - Removed weight/height columns, added litter_id
-- **✅ Parent Handling** - Proper sire/dam via parents table
-- **✅ Microchip Field** - Optional, allows multiple dogs without microchips
-- **✅ Error Handling** - Graceful fallbacks for API failures
-- **✅ UI Layout** - Fixed overlapping elements in dog forms
-
 ## Technology Stack
 
 - **Frontend**: React 18 with modern component design
@@ -136,10 +140,22 @@ npm run build
 breedr/
 ├── client/             # React frontend
 │   ├── src/
+│   │   ├── pages/
+│   │   │   ├── BreedingCalendar.jsx  # Heat cycle calendar (month grid)
+│   │   │   ├── PairingSimulator.jsx  # Trial pairing + COI
+│   │   │   ├── Dashboard.jsx
+│   │   │   ├── DogList.jsx
+│   │   │   ├── DogDetail.jsx
+│   │   │   ├── PedigreeView.jsx
+│   │   │   └── LitterList.jsx
 │   ├── public/
 │   └── package.json
 ├── server/             # Node.js backend
 │   ├── routes/
+│   │   ├── breeding.js   # Heat cycles, whelping, suggestions
+│   │   ├── pedigree.js   # COI, trial pairing
+│   │   ├── dogs.js
+│   │   └── litters.js
 │   ├── db/
 │   │   └── init.js       # Clean schema (NO migrations)
 │   └── index.js
@@ -154,14 +170,31 @@ breedr/
 
 ## API Endpoints
 
+### Dogs
 - `GET/POST /api/dogs` - Dog CRUD operations
 - `GET /api/dogs/:id` - Get dog with parents and offspring
 - `POST /api/dogs/:id/photos` - Upload photos
-- `GET/POST /api/litters` - Litter management
+
+### Pedigree & Genetics
 - `GET /api/pedigree/:id` - Generate pedigree tree
-- `GET /api/health` - Health records
-- `GET/POST /api/breeding` - Heat cycles and breeding
+- `POST /api/pedigree/trial-pairing` - COI + common ancestors + risk recommendation
+
+### Breeding & Heat Cycles
+- `GET /api/breeding/heat-cycles` - All heat cycles
+- `GET /api/breeding/heat-cycles/active` - Active cycles with dog info
+- `GET /api/breeding/heat-cycles/dog/:dogId` - Cycles for a specific dog
+- `GET /api/breeding/heat-cycles/:id/suggestions` - Breeding windows + whelping estimate
+- `POST /api/breeding/heat-cycles` - Create new heat cycle
+- `PUT /api/breeding/heat-cycles/:id` - Update cycle (log breeding date, etc.)
+- `DELETE /api/breeding/heat-cycles/:id` - Delete cycle
+- `GET /api/breeding/whelping-calculator` - Standalone whelping date calculator
+
+### Litters
+- `GET/POST /api/litters` - Litter management
+
+### Assets
 - `GET /static/*` - Branding and static assets
+- `GET /uploads/*` - Dog photos
 
 ## Upgrading
 
@@ -200,9 +233,9 @@ docker-compose restart
 
 Check server logs for:
 ```
-✓ Dog inserted with ID: 123
+✔ Dog inserted with ID: 123
   Adding sire relationship: dog 123 -> sire 5
-  ✓ Sire relationship added
+  ✔ Sire relationship added
 ```
 
 If you don't see these logs, ensure `sire_id` and `dam_id` are being sent in the API request.
@@ -211,6 +244,10 @@ If you don't see these logs, ensure `sire_id` and `dam_id` are being sent in the
 
 Ensure `br-logo.png` is placed in the `static/` directory at the project root. The file is served at `/static/br-logo.png`.
 
+### Heat cycles not showing on calendar
+
+Ensure dogs are registered with `sex: 'female'` before creating heat cycles. The API validates this and will return a 400 error for male dogs.
+
 ## Roadmap
 
 ### ✅ Completed
@@ -225,23 +262,32 @@ Ensure `br-logo.png` is placed in the `static/` directory at the project root. T
 - [x] Search and filtering
 - [x] Custom brand logo + gradient title
 - [x] Static asset serving
+- [x] Trial Pairing Simulator (COI + common ancestors + risk badge)
+- [x] Heat Cycle Calendar (month grid + windows + breeding suggestions + whelping estimate)
 
-### 🚧 In Progress
-- [ ] Trial pairing simulator
-- [ ] Inbreeding coefficient calculator
-- [ ] Heat cycle tracking UI
+### 🔧 In Progress / Up Next
+- [ ] Health Records System
+- [ ] Genetic trait tracking
 
 ### 📋 Planned
-- [ ] Health records management
-- [ ] Genetic trait tracking
 - [ ] PDF pedigree generation
 - [ ] Advanced search and filters
 - [ ] Export capabilities
+- [ ] Progesterone tracking (extended feature)
 
 **Full roadmap:** [ROADMAP.md](ROADMAP.md)
 
 ## Recent Updates
 
+### March 9, 2026 - Heat Cycle Calendar & Trial Pairing Simulator (v0.5.0)
+- **Added:** Full month grid heat cycle calendar with color-coded phase windows
+- **Added:** Start Heat Cycle modal (click any day or header button)
+- **Added:** Cycle Detail modal with breeding window breakdown and inline breeding date logging
+- **Added:** Whelping estimate (earliest/expected/latest) auto-calculated from breeding date
+- **Added:** Trial Pairing Simulator at `/pairing` with COI%, risk badge, common ancestors table
+- **Added:** `GET /api/breeding/heat-cycles` and `GET /api/breeding/heat-cycles/:id/suggestions` endpoints
+- **Moved:** Progesterone tracking to extended roadmap
+
 ### March 9, 2026 - Branding & Header Improvements (v0.4.1)
 - **Added:** Custom `br-logo.png` brand logo in navbar
 - **Added:** Gold-to-rusty-red gradient on "BREEDR" title text
@@ -257,7 +303,6 @@ Ensure `br-logo.png` is placed in the `static/` directory at the project root. T
 - **Added:** litter_id column for linking puppies to litters
 - **Added:** Comprehensive DATABASE.md documentation
 - **Improved:** Server startup with clean initialization
-- **Improved:** Logging for parent relationship creation
 
 ### March 8, 2026 - UI Redesign & Bug Fixes
 - **Fixed:** Microchip field UNIQUE constraint (now properly optional)
@@ -265,7 +310,6 @@ Ensure `br-logo.png` is placed in the `static/` directory at the project root. T
 - **Redesigned:** Compact horizontal info cards (80x80 avatars)
 - **Improved:** Dashboard with gradient stats cards
 - **Improved:** Navigation bar with glass morphism
-- **Enhanced:** Age calculation and display
 - **Added:** Sex-colored icons (blue ♂, pink ♀)
 - **Added:** Registration number badges