docs: update comprehensive API documentation and project guides

This commit updates all documentation files throughout the project:

- Updated IMPLEMENTATION_PLAN.md with new implementation details
- Updated PROJECT_GUIDELINES.md with coding standards and practices
- Updated README.md with current project information
- Updated SCREENSHOT_AUTOMATION.md with new automation details
- Added TEST_DATA.md with test fixtures data
- Updated cover_image_serving_plan.md with static URL patterns

Documentation API updates:
- Updated API reference documentation for all endpoints including:
  - Authentication (login, logout, register, refresh_token)
  - Book matching (auto_link, bulk_link, link_book, search)
  - Collections (CRUD operations, shelf mappings, auto-assign rules)
  - Conflicts (bulk operations, resolve/dismiss)
  - Devices (registration, approval, shelf management)
  - Highlights (create, update, delete, get)
  - Kobo sync (bookmark, markup, initialization, sync)
  - KOReader sync (library, metadata, bookmarks, progress)
  - Libraries (CRUD, folders, media items, stats)
  - Media items (bulk operations, CRUD)
  - Notes (CRUD operations)
  - OPDS (acquisition, feeds, publication)
  - Progress (reading progress tracking)
  - Queue (device queue management)
  - Ratings (star ratings)
  - Scanner (watch mode, scan operations)
  - Sync protocols (Kobo, KOReader)
  - Users (profile, password, admin operations)
  - WebSocket protocols

- Updated user guides (admin, dashboard, settings, sync)
- Updated device setup guides (Kobo, KOReader)
- Updated developer guides (testing, contributing, operations)
- Updated scripts/README.md

docs/operations/troubleshooting.md

@@ -9,6 +9,7 @@ This guide addresses common issues when deploying and running Bookhoard on diffe
 **Issue:** Missing or incorrect `.env` file
 
 **Solution:**
+
 ```bash
 # 1. Copy the example file
 cp .env.example .env
@@ -36,6 +37,7 @@ DBPASS="your-secure-database-password"        # Strong password
 **Issue:** Port 8765 already in use
 
 **Solution:**
+
 ```bash
 # Check what's using the port
 lsof -i :8765
@@ -52,6 +54,7 @@ SERVER_PORT=8766
 **Issue:** Container runtime compatibility
 
 **Solution:**
+
 ```bash
 # Podman is recommended (podman-compose works with docker-compose.yml)
 # Install podman-compose:
@@ -72,6 +75,7 @@ docker compose up -d
 **Issue:** PostgreSQL fails on foreign key constraints
 
 **Solution:**
+
 ```bash
 # Clean database volume and restart:
 # Podman:
@@ -93,6 +97,7 @@ podman-compose logs db  # or: docker compose logs db
 **Issue:** `sqlc` or `templ` not in PATH
 
 **Solution:**
+
 ```bash
 # Ensure Go tools are installed correctly
 go version  # Should be 1.25+
@@ -108,6 +113,7 @@ podman-compose build --no-cache  # or: docker compose build --no-cache
 **Issue:** KEPUB conversion fails or cache problems
 
 **Solution:**
+
 ```bash
 # Check cache directory exists and is writable
 ls -la /var/bookhoard/cache/kepub
@@ -133,6 +139,7 @@ grep BOOKHOARD_CONVERSION .env
 **Issue:** Different OS architectures (ARM vs x86)
 
 **Solution:**
+
 ```bash
 # Check current architecture
 uname -m
@@ -152,6 +159,7 @@ FROM golang:1.25-alpine AS builder
 **Issue:** Can't connect to localhost
 
 **Solution:**
+
 ```bash
 # Check if containers are running:
 podman-compose ps  # or: docker compose ps
@@ -169,6 +177,7 @@ curl -s http://SERVER_IP:8765/api/libraries/visible
 ## 🚀 Quick Verification
 
 ### Basic Health Checks:
+
 ```bash
 # Check container status
 podman-compose ps  # or: docker compose ps
@@ -184,6 +193,7 @@ docker compose logs app
 ```
 
 ### First-Time Setup:
+
 ```bash
 # 1. Clone repository
 git clone <repository-url>
@@ -205,6 +215,7 @@ curl -s http://localhost:8765/api/libraries/visible
 ## 🌐 Production Deployment
 
 ### Environment Variables:
+
 ```bash
 # Required production variables
 export JWT_SECRET="your-production-jwt-secret"
@@ -220,6 +231,7 @@ docker compose -f docker-compose.yml -f docker-compose.prod.yml build
 ## 📋 Debugging Steps
 
 ### Check Application Logs:
+
 ```bash
 # Application logs:
 docker compose logs app
@@ -232,6 +244,7 @@ docker compose logs -f app
 ```
 
 ### Check Database Schema:
+
 ```bash
 # Connect to database:
 docker compose exec db psql -U postgres -d bookhoard
@@ -258,6 +271,7 @@ WHERE tc.table_schema = 'public';
 ```
 
 ### Test New Features:
+
 ```bash
 # Test notes API:
 curl -s -H "Authorization: Bearer YOUR_TOKEN" \
@@ -273,24 +287,28 @@ curl -s -H "Authorization: Bearer YOUR_TOKEN" \
 The current setup follows best practices:
 
 ### ✅ **Containerization**
+
 - Multi-stage Docker builds for smaller images
 - Separate database and application containers
 - Proper volume mounting for data persistence
 - Health checks for service dependencies
 
 ### ✅ **Database Design**
+
 - PostgreSQL with proper foreign key constraints
 - Cascade deletes for data integrity
 - Indexed for performance
 - pgx v5 compatibility
 
 ### ✅ **API Design**
+
 - RESTful endpoints following standards
 - JWT-based authentication
 - Proper HTTP status codes
 - Comprehensive error handling
 
 ### ✅ **Build Process**
+
 - Go modules with vendoring support
 - SQL code generation with sqlc
 - Template generation with templ
@@ -323,6 +341,7 @@ The highlights and notes functionality provides:
 ## 🆘 When All Else Fails
 
 ### Last Resort Steps:
+
 1. **Check this guide** for common solutions
 2. **Verify environment variables** are set correctly
 3. **Ensure no port conflicts** on the target machine
@@ -331,9 +350,10 @@ The highlights and notes functionality provides:
 6. **Test incrementally** - Start with basic setup, then add complexity
 
 ### Get Help:
+
 - **Check GitHub Issues** for known problems
 - **Verify Docker version** compatibility
 - **Test with minimal setup** before adding customizations
 - **Check system resources** (memory, disk space)
 
-The system is designed to be robust and should work across different platforms with minimal configuration.
+The system is designed to be robust and should work across different platforms with minimal configuration.