feat: comprehensive module system and database management improvements

This commit introduces major enhancements to the module installation system,
database management, and configuration handling for AzerothCore deployments.

## Module System Improvements

### Module SQL Staging & Installation
- Refactor module SQL staging to properly handle AzerothCore's sql/ directory structure
- Fix SQL staging path to use correct AzerothCore format (sql/custom/db_*/*)
- Implement conditional module database importing based on enabled modules
- Add support for both cpp-modules and lua-scripts module types
- Handle rsync exit code 23 (permission warnings) gracefully during deployment

### Module Manifest & Automation
- Add automated module manifest generation via GitHub Actions workflow
- Implement Python-based module manifest updater with comprehensive validation
- Add module dependency tracking and SQL file discovery
- Support for blocked modules and module metadata management

## Database Management Enhancements

### Database Import System
- Add db-guard container for continuous database health monitoring and verification
- Implement conditional database import that skips when databases are current
- Add backup restoration and SQL staging coordination
- Support for Playerbots database (4th database) in all import operations
- Add comprehensive database health checking and status reporting

### Database Configuration
- Implement 10 new dbimport.conf settings from environment variables:
  - Database.Reconnect.Seconds/Attempts for connection reliability
  - Updates.AllowedModules for module auto-update control
  - Updates.Redundancy for data integrity checks
  - Worker/Synch thread settings for all three core databases
- Auto-apply dbimport.conf settings via auto-post-install.sh
- Add environment variable injection for db-import and db-guard containers

### Backup & Recovery
- Fix backup scheduler to prevent immediate execution on container startup
- Add backup status monitoring script with detailed reporting
- Implement backup import/export utilities
- Add database verification scripts for SQL update tracking

## User Import Directory

- Add new import/ directory for user-provided database files and configurations
- Support for custom SQL files, configuration overrides, and example templates
- Automatic import of user-provided databases and configs during initialization
- Documentation and examples for custom database imports

## Configuration & Environment

- Eliminate CLIENT_DATA_VERSION warning by adding default value syntax
- Improve CLIENT_DATA_VERSION documentation in .env.template
- Add comprehensive database import settings to .env and .env.template
- Update setup.sh to handle new configuration variables with proper defaults

## Monitoring & Debugging

- Add status dashboard with Go-based terminal UI (statusdash.go)
- Implement JSON status output (statusjson.sh) for programmatic access
- Add comprehensive database health check script
- Add repair-storage-permissions.sh utility for permission issues

## Testing & Documentation

- Add Phase 1 integration test suite for module installation verification
- Add comprehensive documentation for:
  - Database management (DATABASE_MANAGEMENT.md)
  - Module SQL analysis (AZEROTHCORE_MODULE_SQL_ANALYSIS.md)
  - Implementation mapping (IMPLEMENTATION_MAP.md)
  - SQL staging comparison and path coverage
  - Module assets and DBC file requirements
- Update SCRIPTS.md, ADVANCED.md, and troubleshooting documentation
- Update references from database-import/ to import/ directory

## Breaking Changes

- Renamed database-import/ directory to import/ for clarity
- Module SQL files now staged to AzerothCore-compatible paths
- db-guard container now required for proper database lifecycle management

## Bug Fixes

- Fix module SQL staging directory structure for AzerothCore compatibility
- Handle rsync exit code 23 gracefully during deployments
- Prevent backup from running immediately on container startup
- Correct SQL staging paths for proper module installation

setup.sh

@@ -128,6 +128,16 @@ declare -A TEMPLATE_VALUE_MAP=(
   [DEFAULT_MYSQL_HOST]=MYSQL_HOST
   [DEFAULT_DB_WAIT_RETRIES]=DB_WAIT_RETRIES
   [DEFAULT_DB_WAIT_SLEEP]=DB_WAIT_SLEEP
+  [DEFAULT_DB_RECONNECT_SECONDS]=DB_RECONNECT_SECONDS
+  [DEFAULT_DB_RECONNECT_ATTEMPTS]=DB_RECONNECT_ATTEMPTS
+  [DEFAULT_DB_UPDATES_ALLOWED_MODULES]=DB_UPDATES_ALLOWED_MODULES
+  [DEFAULT_DB_UPDATES_REDUNDANCY]=DB_UPDATES_REDUNDANCY
+  [DEFAULT_DB_LOGIN_WORKER_THREADS]=DB_LOGIN_WORKER_THREADS
+  [DEFAULT_DB_WORLD_WORKER_THREADS]=DB_WORLD_WORKER_THREADS
+  [DEFAULT_DB_CHARACTER_WORKER_THREADS]=DB_CHARACTER_WORKER_THREADS
+  [DEFAULT_DB_LOGIN_SYNCH_THREADS]=DB_LOGIN_SYNCH_THREADS
+  [DEFAULT_DB_WORLD_SYNCH_THREADS]=DB_WORLD_SYNCH_THREADS
+  [DEFAULT_DB_CHARACTER_SYNCH_THREADS]=DB_CHARACTER_SYNCH_THREADS
   [DEFAULT_HOST_ZONEINFO_PATH]=HOST_ZONEINFO_PATH
   [DEFAULT_ELUNA_SCRIPT_PATH]=AC_ELUNA_SCRIPT_PATH
   [DEFAULT_PMA_EXTERNAL_PORT]=PMA_EXTERNAL_PORT
@@ -1528,6 +1538,16 @@ fi
   BACKUP_HEALTHCHECK_GRACE_SECONDS=${BACKUP_HEALTHCHECK_GRACE_SECONDS:-$DEFAULT_BACKUP_HEALTHCHECK_GRACE_SECONDS}
   DB_WAIT_RETRIES=${DB_WAIT_RETRIES:-$DEFAULT_DB_WAIT_RETRIES}
   DB_WAIT_SLEEP=${DB_WAIT_SLEEP:-$DEFAULT_DB_WAIT_SLEEP}
+  DB_RECONNECT_SECONDS=${DB_RECONNECT_SECONDS:-$DEFAULT_DB_RECONNECT_SECONDS}
+  DB_RECONNECT_ATTEMPTS=${DB_RECONNECT_ATTEMPTS:-$DEFAULT_DB_RECONNECT_ATTEMPTS}
+  DB_UPDATES_ALLOWED_MODULES=${DB_UPDATES_ALLOWED_MODULES:-$DEFAULT_DB_UPDATES_ALLOWED_MODULES}
+  DB_UPDATES_REDUNDANCY=${DB_UPDATES_REDUNDANCY:-$DEFAULT_DB_UPDATES_REDUNDANCY}
+  DB_LOGIN_WORKER_THREADS=${DB_LOGIN_WORKER_THREADS:-$DEFAULT_DB_LOGIN_WORKER_THREADS}
+  DB_WORLD_WORKER_THREADS=${DB_WORLD_WORKER_THREADS:-$DEFAULT_DB_WORLD_WORKER_THREADS}
+  DB_CHARACTER_WORKER_THREADS=${DB_CHARACTER_WORKER_THREADS:-$DEFAULT_DB_CHARACTER_WORKER_THREADS}
+  DB_LOGIN_SYNCH_THREADS=${DB_LOGIN_SYNCH_THREADS:-$DEFAULT_DB_LOGIN_SYNCH_THREADS}
+  DB_WORLD_SYNCH_THREADS=${DB_WORLD_SYNCH_THREADS:-$DEFAULT_DB_WORLD_SYNCH_THREADS}
+  DB_CHARACTER_SYNCH_THREADS=${DB_CHARACTER_SYNCH_THREADS:-$DEFAULT_DB_CHARACTER_SYNCH_THREADS}
   MYSQL_HEALTHCHECK_INTERVAL=${MYSQL_HEALTHCHECK_INTERVAL:-$DEFAULT_MYSQL_HEALTHCHECK_INTERVAL}
   MYSQL_HEALTHCHECK_TIMEOUT=${MYSQL_HEALTHCHECK_TIMEOUT:-$DEFAULT_MYSQL_HEALTHCHECK_TIMEOUT}
   MYSQL_HEALTHCHECK_RETRIES=${MYSQL_HEALTHCHECK_RETRIES:-$DEFAULT_MYSQL_HEALTHCHECK_RETRIES}
@@ -1606,6 +1626,18 @@ DB_CHARACTERS_NAME=$DEFAULT_DB_CHARACTERS_NAME
 DB_PLAYERBOTS_NAME=${DB_PLAYERBOTS_NAME:-$DEFAULT_DB_PLAYERBOTS_NAME}
 AC_DB_IMPORT_IMAGE=$AC_DB_IMPORT_IMAGE_VALUE
 
+# Database Import Settings
+DB_RECONNECT_SECONDS=$DB_RECONNECT_SECONDS
+DB_RECONNECT_ATTEMPTS=$DB_RECONNECT_ATTEMPTS
+DB_UPDATES_ALLOWED_MODULES=$DB_UPDATES_ALLOWED_MODULES
+DB_UPDATES_REDUNDANCY=$DB_UPDATES_REDUNDANCY
+DB_LOGIN_WORKER_THREADS=$DB_LOGIN_WORKER_THREADS
+DB_WORLD_WORKER_THREADS=$DB_WORLD_WORKER_THREADS
+DB_CHARACTER_WORKER_THREADS=$DB_CHARACTER_WORKER_THREADS
+DB_LOGIN_SYNCH_THREADS=$DB_LOGIN_SYNCH_THREADS
+DB_WORLD_SYNCH_THREADS=$DB_WORLD_SYNCH_THREADS
+DB_CHARACTER_SYNCH_THREADS=$DB_CHARACTER_SYNCH_THREADS
+
 # Services (images)
 AC_AUTHSERVER_IMAGE=$DEFAULT_AC_AUTHSERVER_IMAGE
 AC_WORLDSERVER_IMAGE=$DEFAULT_AC_WORLDSERVER_IMAGE
@@ -1733,8 +1765,6 @@ EOF
 
   local staging_modules_dir="${LOCAL_STORAGE_ROOT_ABS}/modules"
   mkdir -p "$staging_modules_dir"
-  local local_mysql_data_dir="${LOCAL_STORAGE_ROOT_ABS}/mysql-data"
-  mkdir -p "$local_mysql_data_dir"
 
   local module_state_string=""
   for module_state_var in "${MODULE_KEYS[@]}"; do