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feat: add error detection, monitoring, and code quality improvements (#223)
* feat: add error detection, monitoring, and code quality improvements This comprehensive update addresses automatic error detection, code quality, and plugin development experience: ## Error Detection & Monitoring - Add ErrorAggregator service for centralized error tracking - Add pattern detection for recurring errors (5+ in 60 min) - Add error dashboard API endpoints (/api/v3/errors/*) - Integrate error recording into plugin executor ## Code Quality - Remove 10 silent `except: pass` blocks in sports.py and football.py - Remove hardcoded debug log paths - Add pre-commit hooks to prevent future bare except clauses ## Validation & Type Safety - Add warnings when plugins lack config_schema.json - Add config key collision detection for plugins - Improve type coercion logging in BasePlugin ## Testing - Add test_config_validation_edge_cases.py - Add test_plugin_loading_failures.py - Add test_error_aggregator.py ## Documentation - Add PLUGIN_ERROR_HANDLING.md guide - Add CONFIG_DEBUGGING.md guide Note: GitHub Actions CI workflow is available in the plan but requires workflow scope to push. Add .github/workflows/ci.yml manually. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com> * fix: address code review issues - Fix GitHub issues URL in CONFIG_DEBUGGING.md - Use RLock in error_aggregator.py to prevent deadlock in export_to_file - Distinguish missing vs invalid schema files in plugin_manager.py - Add assertions to test_null_value_for_required_field test - Remove unused initial_count variable in test_plugin_load_error_recorded - Add validation for max_age_hours in clear_old_errors API endpoint Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com> --------- Co-authored-by: Chuck <chuck@example.com> Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
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docs/CONFIG_DEBUGGING.md
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docs/CONFIG_DEBUGGING.md
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# Configuration Debugging Guide
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This guide helps troubleshoot configuration issues in LEDMatrix.
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## Configuration Files
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### Main Files
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| File | Purpose |
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|------|---------|
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| `config/config.json` | Main configuration |
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| `config/config_secrets.json` | API keys and sensitive data |
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| `config/config.template.json` | Template for new installations |
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### Plugin Configuration
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Each plugin's configuration is a top-level key in `config.json`:
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```json
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{
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"football-scoreboard": {
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"enabled": true,
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"display_duration": 30,
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"nfl": {
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"enabled": true,
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"live_priority": false
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}
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},
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"odds-ticker": {
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"enabled": true,
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"display_duration": 15
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}
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}
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```
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## Schema Validation
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Plugins define their configuration schema in `config_schema.json`. This enables:
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- Automatic default value population
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- Configuration validation
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- Web UI form generation
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### Missing Schema Warning
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If a plugin doesn't have `config_schema.json`, you'll see:
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```
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WARNING - Plugin 'my-plugin' has no config_schema.json - configuration will not be validated.
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```
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**Fix**: Add a `config_schema.json` to your plugin directory.
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### Schema Example
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```json
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{
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"$schema": "http://json-schema.org/draft-07/schema#",
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"type": "object",
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"properties": {
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"enabled": {
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"type": "boolean",
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"default": true,
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"description": "Enable or disable this plugin"
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},
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"display_duration": {
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"type": "number",
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"default": 15,
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"minimum": 1,
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"description": "How long to display in seconds"
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},
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"api_key": {
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"type": "string",
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"description": "API key for data access"
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}
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},
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"required": ["api_key"]
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}
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```
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## Common Configuration Issues
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### 1. Type Mismatches
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**Problem**: String value where number expected
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```json
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{
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"display_duration": "30" // Wrong: string
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}
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```
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**Fix**: Use correct types
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```json
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{
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"display_duration": 30 // Correct: number
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}
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```
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**Logged Warning**:
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```
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WARNING - Config display_duration has invalid string value '30', using default 15.0
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```
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### 2. Missing Required Fields
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**Problem**: Required field not in config
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```json
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{
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"football-scoreboard": {
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"enabled": true
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// Missing api_key which is required
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}
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}
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```
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**Logged Error**:
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```
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ERROR - Plugin football-scoreboard configuration validation failed: 'api_key' is a required property
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```
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### 3. Invalid Nested Objects
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**Problem**: Wrong structure for nested config
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```json
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{
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"football-scoreboard": {
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"nfl": "enabled" // Wrong: should be object
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}
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}
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```
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**Fix**: Use correct structure
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```json
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{
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"football-scoreboard": {
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"nfl": {
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"enabled": true
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}
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}
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}
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```
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### 4. Invalid JSON Syntax
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**Problem**: Malformed JSON
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```json
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{
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"plugin": {
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"enabled": true, // Trailing comma
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}
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}
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```
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**Fix**: Remove trailing commas, ensure valid JSON
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```json
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{
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"plugin": {
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"enabled": true
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}
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}
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```
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**Tip**: Validate JSON at https://jsonlint.com/
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## Debugging Configuration Loading
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### Enable Debug Logging
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Set environment variable:
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```bash
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export LEDMATRIX_DEBUG=1
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python run.py
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```
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### Check Merged Configuration
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The configuration is merged with schema defaults. To see the final merged config:
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1. Enable debug logging
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2. Look for log entries like:
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```
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DEBUG - Merged config with schema defaults for football-scoreboard
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```
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### Configuration Load Order
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1. Load `config.json`
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2. Load `config_secrets.json`
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3. Merge secrets into main config
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4. For each plugin:
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- Load plugin's `config_schema.json`
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- Extract default values from schema
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- Merge user config with defaults
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- Validate merged config against schema
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## Web Interface Issues
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### Changes Not Saving
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1. Check file permissions on `config/` directory
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2. Check disk space
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3. Look for errors in browser console
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4. Check server logs for save errors
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### Form Fields Not Appearing
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1. Plugin may not have `config_schema.json`
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2. Schema may have syntax errors
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3. Check browser console for JavaScript errors
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### Checkboxes Not Working
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Boolean values from checkboxes should be actual booleans, not strings:
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```json
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{
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"enabled": true, // Correct
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"enabled": "true" // Wrong
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}
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```
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## Config Key Collision Detection
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LEDMatrix detects potential config key conflicts:
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### Reserved Keys
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These plugin IDs will trigger a warning:
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- `display`, `schedule`, `timezone`, `plugin_system`
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- `display_modes`, `system`, `hardware`, `debug`
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- `log_level`, `emulator`, `web_interface`
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**Warning**:
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```
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WARNING - Plugin ID 'display' conflicts with reserved config key.
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```
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### Case Collisions
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Plugin IDs that differ only in case:
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```
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WARNING - Plugin ID 'Football-Scoreboard' may conflict with 'football-scoreboard' on case-insensitive file systems.
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```
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## Checking Configuration via API
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```bash
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# Get current config
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curl http://localhost:5000/api/v3/config
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# Get specific plugin config
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curl http://localhost:5000/api/v3/config/plugin/football-scoreboard
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# Validate config without saving
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curl -X POST http://localhost:5000/api/v3/config/validate \
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-H "Content-Type: application/json" \
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-d '{"football-scoreboard": {"enabled": true}}'
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```
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## Backup and Recovery
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### Manual Backup
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```bash
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cp config/config.json config/config.backup.json
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```
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### Automatic Backups
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LEDMatrix creates backups before saves:
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- Location: `config/backups/`
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- Format: `config_YYYYMMDD_HHMMSS.json`
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### Recovery
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```bash
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# List backups
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ls -la config/backups/
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# Restore from backup
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cp config/backups/config_20240115_120000.json config/config.json
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```
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## Troubleshooting Checklist
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- [ ] JSON syntax is valid (no trailing commas, quotes correct)
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- [ ] Data types match schema (numbers are numbers, not strings)
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- [ ] Required fields are present
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- [ ] Nested objects have correct structure
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- [ ] File permissions allow read/write
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- [ ] No reserved config key collisions
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- [ ] Plugin has `config_schema.json` for validation
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## Getting Help
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1. Check logs: `tail -f logs/ledmatrix.log`
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2. Enable debug: `LEDMATRIX_DEBUG=1`
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3. Check error dashboard: `/api/v3/errors/summary`
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4. Validate JSON: https://jsonlint.com/
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5. File an issue: https://github.com/ChuckBuilds/LEDMatrix/issues
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