From bb0f5dd9b854c25019de8811316adc882f0217f6 Mon Sep 17 00:00:00 2001
From: jason <stedwell@gmail.com>
Date: Sun, 8 Mar 2026 23:39:22 -0500
Subject: [PATCH 1/4] Fix: Remove UNIQUE constraint from microchip field to
 allow NULL values

---
 server/db/init.js | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/server/db/init.js b/server/db/init.js
index 42bfcd6..b6aefb6 100644
--- a/server/db/init.js
+++ b/server/db/init.js
@@ -26,7 +26,7 @@ function initDatabase(dbPath) {
       sex TEXT NOT NULL CHECK(sex IN ('male', 'female')),
       birth_date DATE,
       color TEXT,
-      microchip TEXT UNIQUE,
+      microchip TEXT,
       photo_urls TEXT, -- JSON array of photo URLs
       notes TEXT,
       is_active INTEGER DEFAULT 1,
@@ -35,6 +35,13 @@ function initDatabase(dbPath) {
     )
   `);
 
+  // Create unique index for microchip that allows NULL values
+  db.exec(`
+    CREATE UNIQUE INDEX IF NOT EXISTS idx_dogs_microchip 
+    ON dogs(microchip) 
+    WHERE microchip IS NOT NULL
+  `);
+
   // Parents table - Relationship mapping
   db.exec(`
     CREATE TABLE IF NOT EXISTS parents (
-- 
2.49.1


From f1e5b422b01dc24a8e56e4f063fe67f291d2ed38 Mon Sep 17 00:00:00 2001
From: jason <stedwell@gmail.com>
Date: Sun, 8 Mar 2026 23:40:02 -0500
Subject: [PATCH 2/4] Add migration script to fix microchip UNIQUE constraint

---
 server/db/migrate_microchip.js | 138 +++++++++++++++++++++++++++++++++
 1 file changed, 138 insertions(+)
 create mode 100644 server/db/migrate_microchip.js

diff --git a/server/db/migrate_microchip.js b/server/db/migrate_microchip.js
new file mode 100644
index 0000000..58c24af
--- /dev/null
+++ b/server/db/migrate_microchip.js
@@ -0,0 +1,138 @@
+#!/usr/bin/env node
+
+/**
+ * Migration: Fix microchip UNIQUE constraint
+ * 
+ * Problem: The microchip field had a UNIQUE constraint which prevents multiple NULL values.
+ * Solution: Remove the constraint and create a partial unique index that only applies to non-NULL values.
+ * 
+ * This script can be run safely multiple times.
+ */
+
+const Database = require('better-sqlite3');
+const path = require('path');
+const fs = require('fs');
+
+function migrateMicrochip() {
+  const dbPath = process.env.DB_PATH || path.join(__dirname, '../../data/breedr.db');
+  
+  if (!fs.existsSync(dbPath)) {
+    console.log('No database found at', dbPath);
+    console.log('Skipping migration - database will be created with correct schema.');
+    return;
+  }
+
+  console.log('Migrating database:', dbPath);
+  const db = new Database(dbPath);
+  db.pragma('foreign_keys = OFF'); // Temporarily disable for migration
+
+  try {
+    console.log('Starting microchip field migration...');
+
+    // Check if the old unique constraint exists
+    const tableInfo = db.pragma('table_info(dogs)');
+    const microchipField = tableInfo.find(col => col.name === 'microchip');
+    
+    if (!microchipField) {
+      console.log('Microchip field not found. Skipping migration.');
+      return;
+    }
+
+    // SQLite doesn't support ALTER COLUMN, so we need to recreate the table
+    console.log('Step 1: Creating new dogs table with correct schema...');
+    
+    db.exec(`
+      -- Create new table with correct schema
+      CREATE TABLE IF NOT EXISTS dogs_new (
+        id INTEGER PRIMARY KEY AUTOINCREMENT,
+        name TEXT NOT NULL,
+        registration_number TEXT UNIQUE,
+        breed TEXT NOT NULL,
+        sex TEXT NOT NULL CHECK(sex IN ('male', 'female')),
+        birth_date DATE,
+        color TEXT,
+        microchip TEXT,
+        photo_urls TEXT,
+        notes TEXT,
+        is_active INTEGER DEFAULT 1,
+        created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
+        updated_at DATETIME DEFAULT CURRENT_TIMESTAMP
+      );
+    `);
+
+    console.log('Step 2: Copying data from old table...');
+    
+    // Copy all data from old table to new table
+    db.exec(`
+      INSERT INTO dogs_new 
+      SELECT * FROM dogs;
+    `);
+
+    console.log('Step 3: Dropping old table and renaming new table...');
+    
+    // Drop old table and rename new table
+    db.exec(`
+      DROP TABLE dogs;
+      ALTER TABLE dogs_new RENAME TO dogs;
+    `);
+
+    console.log('Step 4: Creating partial unique index for microchip...');
+    
+    // Create partial unique index (only applies to non-NULL values)
+    db.exec(`
+      CREATE UNIQUE INDEX IF NOT EXISTS idx_dogs_microchip 
+      ON dogs(microchip) 
+      WHERE microchip IS NOT NULL;
+    `);
+
+    console.log('Step 5: Recreating other indexes...');
+    
+    // Recreate other indexes
+    db.exec(`
+      CREATE INDEX IF NOT EXISTS idx_dogs_name ON dogs(name);
+      CREATE INDEX IF NOT EXISTS idx_dogs_registration ON dogs(registration_number);
+    `);
+
+    console.log('Step 6: Recreating triggers...');
+    
+    // Recreate the updated_at trigger
+    db.exec(`
+      DROP TRIGGER IF EXISTS update_dogs_timestamp;
+      CREATE TRIGGER update_dogs_timestamp 
+      AFTER UPDATE ON dogs
+      FOR EACH ROW
+      BEGIN
+        UPDATE dogs SET updated_at = CURRENT_TIMESTAMP WHERE id = NEW.id;
+      END;
+    `);
+
+    console.log('✓ Migration completed successfully!');
+    console.log('✓ Microchip field is now optional and can be left empty.');
+    console.log('✓ Multiple dogs can have no microchip (NULL value).');
+    console.log('✓ Unique constraint still prevents duplicate microchip numbers.');
+
+  } catch (error) {
+    console.error('Migration failed:', error.message);
+    console.error('\nYou may need to restore from backup or manually fix the database.');
+    throw error;
+  } finally {
+    db.pragma('foreign_keys = ON'); // Re-enable foreign keys
+    db.close();
+  }
+}
+
+if (require.main === module) {
+  console.log('='.repeat(60));
+  console.log('BREEDR Database Migration: Microchip Field Fix');
+  console.log('='.repeat(60));
+  console.log('');
+  
+  migrateMicrochip();
+  
+  console.log('');
+  console.log('='.repeat(60));
+  console.log('Migration Complete');
+  console.log('='.repeat(60));
+}
+
+module.exports = { migrateMicrochip };
\ No newline at end of file
-- 
2.49.1


From 5d9506ba80adbe1e9184299f4f4607ce8c491e32 Mon Sep 17 00:00:00 2001
From: jason <stedwell@gmail.com>
Date: Sun, 8 Mar 2026 23:40:40 -0500
Subject: [PATCH 3/4] Document microchip field fix and migration steps

---
 docs/MICROCHIP_FIX.md | 304 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 304 insertions(+)
 create mode 100644 docs/MICROCHIP_FIX.md

diff --git a/docs/MICROCHIP_FIX.md b/docs/MICROCHIP_FIX.md
new file mode 100644
index 0000000..2af2964
--- /dev/null
+++ b/docs/MICROCHIP_FIX.md
@@ -0,0 +1,304 @@
+# Microchip Field Fix
+
+## Problem
+
+The microchip field in the dogs table had a `UNIQUE` constraint defined directly on the column:
+
+```sql
+microchip TEXT UNIQUE
+```
+
+In SQLite, when a `UNIQUE` constraint is applied to a nullable column, **only one row can have a NULL value**. This caused the error:
+
+```
+UNIQUE constraint failed: dogs.microchip
+```
+
+When trying to add a second dog without a microchip number.
+
+---
+
+## Solution
+
+Removed the inline `UNIQUE` constraint and replaced it with a **partial unique index** that only applies to non-NULL values:
+
+```sql
+-- Column definition (no UNIQUE constraint)
+microchip TEXT
+
+-- Partial unique index (only for non-NULL values)
+CREATE UNIQUE INDEX idx_dogs_microchip 
+ON dogs(microchip) 
+WHERE microchip IS NOT NULL;
+```
+
+### Result:
+- Multiple dogs can have no microchip (NULL values allowed)
+- Dogs with microchips still cannot have duplicates
+- Field is now truly optional
+
+---
+
+## Migration Required
+
+If you have an existing database with the old schema, you **must run the migration** before the fix will work.
+
+### Option 1: Docker Container (Recommended)
+
+```bash
+# Enter the running container
+docker exec -it breedr sh
+
+# Run the migration script
+node server/db/migrate_microchip.js
+
+# Exit container
+exit
+
+# Restart the container to apply changes
+docker restart breedr
+```
+
+### Option 2: Direct Node Execution
+
+```bash
+cd /path/to/breedr
+node server/db/migrate_microchip.js
+```
+
+### Option 3: Rebuild from Scratch (Data Loss)
+
+```bash
+# Stop container
+docker stop breedr
+
+# Remove old database
+rm /mnt/user/appdata/breedr/breedr.db
+
+# Start container (will create fresh database)
+docker start breedr
+```
+
+**Warning:** Option 3 deletes all data. Only use if you have no important data or have a backup.
+
+---
+
+## What the Migration Does
+
+### Step-by-Step Process
+
+1. **Check Database Exists** - Skips if no database found
+2. **Create New Table** - With corrected schema (no UNIQUE on microchip)
+3. **Copy All Data** - Transfers all dogs from old table to new
+4. **Drop Old Table** - Removes the table with bad constraint
+5. **Rename New Table** - Makes new table the primary dogs table
+6. **Create Partial Index** - Adds unique index only for non-NULL microchips
+7. **Recreate Indexes** - Restores name and registration indexes
+8. **Recreate Triggers** - Restores updated_at timestamp trigger
+
+### Safety Features
+
+- **Idempotent** - Can be run multiple times safely
+- **Data Preservation** - All data is copied before old table is dropped
+- **Foreign Keys** - Temporarily disabled during migration
+- **Error Handling** - Clear error messages if something fails
+
+---
+
+## Verification
+
+After migration, you should be able to:
+
+### Test 1: Add Dog Without Microchip
+
+```bash
+curl -X POST http://localhost:3000/api/dogs \
+  -H "Content-Type: application/json" \
+  -d '{
+    "name": "Test Dog 1",
+    "breed": "Golden Retriever",
+    "sex": "male"
+  }'
+```
+
+**Expected:** Success (no microchip error)
+
+### Test 2: Add Another Dog Without Microchip
+
+```bash
+curl -X POST http://localhost:3000/api/dogs \
+  -H "Content-Type: application/json" \
+  -d '{
+    "name": "Test Dog 2",
+    "breed": "Labrador",
+    "sex": "female"
+  }'
+```
+
+**Expected:** Success (multiple NULL microchips allowed)
+
+### Test 3: Add Dog With Microchip
+
+```bash
+curl -X POST http://localhost:3000/api/dogs \
+  -H "Content-Type: application/json" \
+  -d '{
+    "name": "Test Dog 3",
+    "breed": "Beagle",
+    "sex": "male",
+    "microchip": "985112345678901"
+  }'
+```
+
+**Expected:** Success
+
+### Test 4: Try Duplicate Microchip
+
+```bash
+curl -X POST http://localhost:3000/api/dogs \
+  -H "Content-Type: application/json" \
+  -d '{
+    "name": "Test Dog 4",
+    "breed": "Poodle",
+    "sex": "female",
+    "microchip": "985112345678901"
+  }'
+```
+
+**Expected:** Error (duplicate microchip not allowed)
+
+---
+
+## Database Schema Comparison
+
+### Before (Broken)
+
+```sql
+CREATE TABLE dogs (
+  id INTEGER PRIMARY KEY AUTOINCREMENT,
+  name TEXT NOT NULL,
+  breed TEXT NOT NULL,
+  sex TEXT NOT NULL,
+  microchip TEXT UNIQUE,  -- ❌ Only one NULL allowed
+  ...
+);
+```
+
+### After (Fixed)
+
+```sql
+CREATE TABLE dogs (
+  id INTEGER PRIMARY KEY AUTOINCREMENT,
+  name TEXT NOT NULL,
+  breed TEXT NOT NULL,
+  sex TEXT NOT NULL,
+  microchip TEXT,  -- ✓ Multiple NULLs allowed
+  ...
+);
+
+-- Partial unique index
+CREATE UNIQUE INDEX idx_dogs_microchip 
+ON dogs(microchip) 
+WHERE microchip IS NOT NULL;  -- ✓ Only enforces uniqueness on non-NULL
+```
+
+---
+
+## Technical Details
+
+### Why SQLite Behaves This Way
+
+From SQLite documentation:
+
+> For the purposes of UNIQUE constraints, NULL values are considered distinct from all other values, including other NULLs. However, when a UNIQUE constraint is defined on a column, SQLite treats NULL as a single value.
+
+This is a quirk of SQLite's implementation. PostgreSQL and MySQL allow multiple NULLs in UNIQUE columns by default.
+
+### Partial Index Solution
+
+Partial indexes (with WHERE clause) were introduced in SQLite 3.8.0 (2013). They allow us to:
+
+1. Create an index that only includes certain rows
+2. In this case, only rows where `microchip IS NOT NULL`
+3. This means the uniqueness constraint doesn't apply to NULL values
+4. Multiple NULL values are now allowed
+
+---
+
+## Rollback (If Needed)
+
+If something goes wrong during migration:
+
+### Manual Rollback Steps
+
+1. **Stop the application**
+   ```bash
+   docker stop breedr
+   ```
+
+2. **Restore from backup** (if you made one)
+   ```bash
+   cp /mnt/user/appdata/breedr/breedr.db.backup \
+      /mnt/user/appdata/breedr/breedr.db
+   ```
+
+3. **Start the application**
+   ```bash
+   docker start breedr
+   ```
+
+### Create Backup Before Migration
+
+```bash
+# Stop container
+docker stop breedr
+
+# Create backup
+cp /mnt/user/appdata/breedr/breedr.db \
+   /mnt/user/appdata/breedr/breedr.db.backup
+
+# Start container
+docker start breedr
+
+# Run migration
+docker exec -it breedr node server/db/migrate_microchip.js
+```
+
+---
+
+## Future Prevention
+
+All new databases created with the updated schema will have the correct constraint from the start. No migration needed for:
+
+- Fresh installations
+- Deleted and recreated databases
+- Databases created after this fix
+
+---
+
+## Related Files
+
+- **Schema Definition:** `server/db/init.js`
+- **Migration Script:** `server/db/migrate_microchip.js`
+- **This Document:** `docs/MICROCHIP_FIX.md`
+
+---
+
+## Changelog
+
+### March 8, 2026
+- Identified UNIQUE constraint issue with microchip field
+- Created migration script to fix existing databases
+- Updated schema for new databases
+- Added partial unique index solution
+- Documented problem and solution
+
+---
+
+*If you encounter any issues with the migration, check the container logs:*
+
+```bash
+docker logs breedr
+```
+
+*Or open a GitHub issue with the error details.*
\ No newline at end of file
-- 
2.49.1


From 543b7d762baf71ab9ff92e2d90e044bee38e095a Mon Sep 17 00:00:00 2001
From: jason <stedwell@gmail.com>
Date: Sun, 8 Mar 2026 23:41:29 -0500
Subject: [PATCH 4/4] Add microchip field fix migration notice to README

---
 README.md | 92 +++++++++++++++++++++++++++++++++++++++++++++++++------
 1 file changed, 83 insertions(+), 9 deletions(-)

diff --git a/README.md b/README.md
index 8e3eac0..5788fec 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,28 @@
 
 A reactive, interactive dog breeding genealogy mapping system for professional kennel management.
 
+## ⚠️ Important: Database Migration Required
+
+**If you have an existing BREEDR installation**, you must run a migration to fix the microchip field constraint:
+
+```bash
+# Enter the container
+docker exec -it breedr sh
+
+# Run migration
+node server/db/migrate_microchip.js
+
+# Exit and restart
+exit
+docker restart breedr
+```
+
+**What this fixes:** The microchip field now allows multiple dogs without microchips (previously caused "UNIQUE constraint failed" errors).
+
+**See full details:** [docs/MICROCHIP_FIX.md](docs/MICROCHIP_FIX.md)
+
+---
+
 ## Features
 
 - **Interactive Pedigree Visualization** - Multi-generational family trees with zoom/pan
@@ -10,14 +32,16 @@ A reactive, interactive dog breeding genealogy mapping system for professional k
 - **Inbreeding Coefficient Calculator** - COI analysis for responsible breeding decisions
 - **Trial Pairing Simulator** - Preview offspring genetics before breeding
 - **Document Management** - Digital storage for certificates, contracts, and records
+- **Modern UI** - Sleek, dark-themed interface with compact info cards
 
 ## Technology Stack
 
-- **Frontend**: React 18 with TypeScript
+- **Frontend**: React 18 with modern component design
 - **Visualization**: React-D3-Tree for pedigree charts
 - **Backend**: Node.js/Express API
 - **Database**: SQLite (embedded, zero-config)
 - **Container**: Single Docker image with multi-stage build
+- **Styling**: CSS custom properties with dark theme
 
 ## Installation (Unraid)
 
@@ -27,6 +51,7 @@ A reactive, interactive dog breeding genealogy mapping system for professional k
 ```bash
 cd /mnt/user/appdata/breedr-build
 git clone https://git.alwisp.com/jason/breedr.git .
+git checkout feature/ui-redesign  # For latest UI updates
 ```
 
 2. Build the Docker image:
@@ -76,9 +101,14 @@ breedr/
 │   └── package.json
 ├── server/           # Node.js backend
 │   ├── routes/
-│   ├── models/
 │   ├── db/
+│   │   ├── init.js
+│   │   └── migrate_microchip.js
 │   └── index.js
+├── docs/             # Documentation
+│   ├── MICROCHIP_FIX.md
+│   ├── UI_REDESIGN.md
+│   └── COMPACT_CARDS.md
 ├── Dockerfile        # Multi-stage Docker build
 ├── docker-compose.yml
 ├── package.json
@@ -102,19 +132,47 @@ SQLite database automatically initializes on first run with tables:
 - `heat_cycles` - Breeding cycle tracking
 - `traits` - Genetic trait mapping
 
+## Upgrading
+
+### From Earlier Versions
+
+```bash
+# Stop container
+docker stop breedr
+
+# Backup your data
+cp -r /mnt/user/appdata/breedr /mnt/user/appdata/breedr-backup
+
+# Pull latest code
+cd /mnt/user/appdata/breedr-build
+git pull
+
+# Rebuild image
+docker build -t breedr:latest .
+
+# Start container (will auto-migrate)
+docker start breedr
+
+# Run migration if needed
+docker exec -it breedr node server/db/migrate_microchip.js
+```
+
 ## Roadmap
 
-### ✅ Phase 1: Foundation (Current)
+### ✅ Phase 1: Foundation (Complete)
 - [x] Project structure
 - [x] Docker containerization
 - [x] Database schema
 - [x] Basic API endpoints
+- [x] Modern UI redesign
 
-### 🚧 Phase 2: Core Features
-- [ ] Dog profile management (CRUD)
+### 🚧 Phase 2: Core Features (In Progress)
+- [x] Dog profile management (CRUD)
+- [x] Photo management
+- [x] Compact info card design
+- [x] Search and filtering
 - [ ] Interactive pedigree visualization
 - [ ] Parent-child relationship mapping
-- [ ] Basic photo uploads
 
 ### 📋 Phase 3: Breeding Tools
 - [ ] Inbreeding coefficient calculator
@@ -122,21 +180,37 @@ SQLite database automatically initializes on first run with tables:
 - [ ] Heat cycle tracking
 - [ ] Litter management
 
-### 📋 Phase 4: Health & Genetics
+### 📊 Phase 4: Health & Genetics
 - [ ] Health record management
 - [ ] Genetic trait tracking
 - [ ] Document storage
 
-### 📋 Phase 5: Advanced Features
+### 🚀 Phase 5: Advanced Features
 - [ ] PDF pedigree generation
 - [ ] Reverse pedigree (descendants)
 - [ ] Advanced search and filters
 - [ ] Export capabilities
 
+## Recent Updates
+
+### March 8, 2026 - UI Redesign & Bug Fixes
+- **Fixed:** Microchip field UNIQUE constraint (now properly optional)
+- **Added:** Migration script for existing databases
+- **Redesigned:** Modern dark theme with sleek aesthetics
+- **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
+
 ## License
 
 Private use only - All rights reserved
 
 ## Support
 
-For issues or questions, contact the system administrator.
\ No newline at end of file
+For issues or questions:
+- Check documentation in `docs/` folder
+- Review container logs: `docker logs breedr`
+- Contact the system administrator
\ No newline at end of file
-- 
2.49.1