Feature/soccer scroll support (#186)

* fix: Use plugin.modes instead of manifest.json for available modes

- Display controller now checks plugin_instance.modes first before falling back to manifest
- This allows plugins to dynamically provide modes based on enabled leagues
- Fixes issue where disabled leagues (WNBA, NCAAW) appeared in available modes
- Plugins can now control their available modes at runtime based on config

* fix: Handle permission errors when removing plugin directories

- Added _safe_remove_directory() method to handle permission errors gracefully
- Fixes permissions on __pycache__ directories before removal
- Updates uninstall_plugin() and install methods to use safe removal
- Resolves [Errno 13] Permission denied errors during plugin install/uninstall

* debug(display): Change FPS check logging from debug to info level

- Change FPS check log from DEBUG to INFO to help diagnose scrolling FPS issues
- Add active_mode to log message for clarity
- Helps identify if plugins are being detected for high-FPS mode

* debug(display): Add logging for display_interval in both FPS loops

- Log display_interval when entering high-FPS and normal loops
- Shows expected FPS for high-FPS mode
- Helps diagnose why news ticker shows 50 FPS despite high-FPS detection

* feat: Update soccer-scoreboard submodule with scroll display support

- Submodule now includes full feature parity with football-scoreboard
- Granular display modes for 8 leagues (24 total modes)
- Scroll display mode with game_renderer.py and scroll_display.py
- League registry system with enabled state filtering
- Modernized config_schema.json with per-league scroll settings
- League-aware logo caching to prevent collisions
- Pillow 8.x compatibility for image resampling

Submodule branch: feature/football-feature-parity
Commit: e22a16d

* style(web): Update plugin button colors and reorganize documentation

- Change update button color to yellow-600 in installed plugins section to match plugin config page
- Change refresh plugins button color to blue-600 to match restart display button
- Move DEVELOPMENT.md and MIGRATION_GUIDE.md from root to docs/ directory
- Remove IMPACT_EXPLANATION.md and MERGE_CONFLICT_RESOLUTION_PLAN.md

---------

Co-authored-by: Chuck <chuck@example.com>

docs/MIGRATION_GUIDE.md

@@ -0,0 +1,95 @@
+# Migration Guide
+
+This guide helps you migrate from older versions of LEDMatrix to the latest version.
+
+## Breaking Changes
+
+### Script Path Reorganization
+
+Scripts have been reorganized into subdirectories for better organization. **If you have automation, cron jobs, or custom tooling that references old script paths, you must update them.**
+
+#### Installation Scripts
+
+All installation scripts have been moved from the project root to `scripts/install/`:
+
+| Old Path | New Path |
+|----------|----------|
+| `install_service.sh` | `scripts/install/install_service.sh` |
+| `install_web_service.sh` | `scripts/install/install_web_service.sh` |
+| `install_wifi_monitor.sh` | `scripts/install/install_wifi_monitor.sh` |
+| `setup_cache.sh` | `scripts/install/setup_cache.sh` |
+| `configure_web_sudo.sh` | `scripts/install/configure_web_sudo.sh` |
+| `migrate_config.sh` | `scripts/install/migrate_config.sh` |
+
+#### Permission Fix Scripts
+
+All permission fix scripts have been moved to `scripts/fix_perms/`:
+
+| Old Path | New Path |
+|----------|----------|
+| `fix_assets_permissions.sh` | `scripts/fix_perms/fix_assets_permissions.sh` |
+| `fix_cache_permissions.sh` | `scripts/fix_perms/fix_cache_permissions.sh` |
+| `fix_plugin_permissions.sh` | `scripts/fix_perms/fix_plugin_permissions.sh` |
+| `fix_web_permissions.sh` | `scripts/fix_perms/fix_web_permissions.sh` |
+
+#### Action Required
+
+1. **Update cron jobs**: If you have any cron jobs that call these scripts, update the paths.
+2. **Update automation scripts**: Any custom scripts or automation that references the old paths must be updated.
+3. **Update documentation**: Update any internal documentation or runbooks that reference these scripts.
+
+#### Example Updates
+
+**Before:**
+```bash
+# Old cron job or script
+0 2 * * * /path/to/LEDMatrix/fix_cache_permissions.sh
+sudo ./install_service.sh
+```
+
+**After:**
+```bash
+# Updated paths
+0 2 * * * /path/to/LEDMatrix/scripts/fix_perms/fix_cache_permissions.sh
+sudo ./scripts/install/install_service.sh
+```
+
+#### Verification
+
+After updating your scripts, verify they still work:
+
+```bash
+# Test installation scripts (if needed)
+ls scripts/install/*.sh
+sudo ./scripts/install/install_service.sh --help
+
+# Test permission scripts
+ls scripts/fix_perms/*.sh
+sudo ./scripts/fix_perms/fix_cache_permissions.sh
+```
+
+---
+
+## Other Changes
+
+### Configuration File Location
+
+No changes to configuration file locations. The configuration system remains backward compatible.
+
+### Plugin System
+
+The plugin system has been enhanced but remains backward compatible with existing plugins.
+
+---
+
+## Getting Help
+
+If you encounter issues during migration:
+
+1. Check the [README.md](README.md) for current installation and usage instructions
+2. Review script README files:
+   - `scripts/install/README.md` - Installation scripts documentation
+   - `scripts/fix_perms/README.md` (if exists) - Permission scripts documentation
+3. Check system logs: `journalctl -u ledmatrix -f` or `journalctl -u ledmatrix-web -f`
+4. Review the troubleshooting section in the main README
+