UI styling improvements: dashboard headers and navigation

- Restore blue PageHeader on Dashboard (/app-components)
- Update homepage (/) with subtle header design without blue bar
- Add uniform PageHeader styling to application edit page
- Fix Rapporten link on homepage to point to /reports overview
- Improve header descriptions spacing for better readability

docs/LOCAL-DEVELOPMENT-SETUP.md

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+# Local Development Setup
+
+## PostgreSQL Only (Recommended for Local Development)
+
+Voor lokale development heb je alleen PostgreSQL nodig. De backend en frontend draaien lokaal op je MacBook.
+
+### Start PostgreSQL
+
+```bash
+# Start alleen PostgreSQL
+docker-compose -f docker-compose.dev.yml up -d
+
+# Check status
+docker-compose -f docker-compose.dev.yml ps
+
+# Check logs
+docker-compose -f docker-compose.dev.yml logs -f postgres
+```
+
+### Connection String
+
+```env
+DATABASE_TYPE=postgres
+DATABASE_URL=postgresql://cmdb:cmdb-dev@localhost:5432/cmdb_cache
+```
+
+Of individuele variabelen:
+
+```env
+DATABASE_TYPE=postgres
+DATABASE_HOST=localhost
+DATABASE_PORT=5432
+DATABASE_NAME=cmdb_cache
+DATABASE_USER=cmdb
+DATABASE_PASSWORD=cmdb-dev
+```
+
+### Stop PostgreSQL
+
+```bash
+docker-compose -f docker-compose.dev.yml down
+```
+
+### Reset Database
+
+```bash
+# Stop en verwijder volume
+docker-compose -f docker-compose.dev.yml down -v
+
+# Start opnieuw
+docker-compose -f docker-compose.dev.yml up -d
+```
+
+### Connect to Database
+
+```bash
+# Via psql
+docker-compose -f docker-compose.dev.yml exec postgres psql -U cmdb -d cmdb_cache
+
+# Of direct
+psql postgresql://cmdb:cmdb-dev@localhost:5432/cmdb_cache
+```
+
+### Useful Commands
+
+```bash
+# List databases
+docker-compose -f docker-compose.dev.yml exec postgres psql -U cmdb -c "\l"
+
+# List tables
+docker-compose -f docker-compose.dev.yml exec postgres psql -U cmdb -d cmdb_cache -c "\dt"
+
+# Check database size
+docker-compose -f docker-compose.dev.yml exec postgres psql -U cmdb -d cmdb_cache -c "
+  SELECT pg_size_pretty(pg_database_size('cmdb_cache')) as size;
+"
+
+# Count objects
+docker-compose -f docker-compose.dev.yml exec postgres psql -U cmdb -d cmdb_cache -c "
+  SELECT object_type_name, COUNT(*) 
+  FROM objects 
+  GROUP BY object_type_name;
+"
+```
+
+## Full Stack (Alternative)
+
+Als je de hele stack in Docker wilt draaien:
+
+```bash
+docker-compose up -d
+```
+
+Dit start:
+- PostgreSQL
+- Backend (in Docker)
+- Frontend (in Docker)
+
+## Backend Development
+
+Met alleen PostgreSQL draaiend:
+
+```bash
+# In backend directory
+cd backend
+npm install
+npm run dev
+```
+
+Backend draait op `http://localhost:3001`
+
+## Frontend Development
+
+```bash
+# In frontend directory
+cd frontend
+npm install
+npm run dev
+```
+
+Frontend draait op `http://localhost:5173`
+
+## Environment Variables
+
+Maak een `.env` bestand in de root:
+
+```env
+# Database (voor backend)
+DATABASE_TYPE=postgres
+DATABASE_URL=postgresql://cmdb:cmdb-dev@localhost:5432/cmdb_cache
+
+# Jira (optioneel)
+JIRA_HOST=https://jira.zuyderland.nl
+JIRA_PAT=your_token
+JIRA_SCHEMA_ID=your_schema_id
+
+# AI (optioneel)
+ANTHROPIC_API_KEY=your_key
+```
+
+## Troubleshooting
+
+### Port Already in Use
+
+Als poort 5432 al in gebruik is:
+
+```yaml
+# In docker-compose.dev.yml, wijzig:
+ports:
+  - "5433:5432"  # Gebruik 5433 lokaal
+```
+
+En update je `.env`:
+```env
+DATABASE_PORT=5433
+```
+
+### Connection Refused
+
+```bash
+# Check of container draait
+docker ps | grep postgres
+
+# Check logs
+docker-compose -f docker-compose.dev.yml logs postgres
+
+# Test connection
+docker-compose -f docker-compose.dev.yml exec postgres pg_isready -U cmdb
+```
+
+### Database Not Found
+
+De database wordt automatisch aangemaakt bij eerste start van de backend. Of maak handmatig:
+
+```bash
+docker-compose -f docker-compose.dev.yml exec postgres psql -U cmdb -c "CREATE DATABASE cmdb_cache;"
+```