f8950c22b4
- Migrated authentication storage from JSON-based (auth.json) to database-based (agent.db) format across test files and configuration. - Simplified auth storage discovery in sdk.ts by removing manual path construction and fallback logic in favor of centralized getAgentDbPath() function. - Removed dbPath instance property from AuthStorage class as database path is now managed centrally. - Updated environment variable precedence documentation to reflect agent.db instead of auth.json as the lowest priority source. - Removed OAuth provider section header comments from multiple test files for cleaner test organization. - Added support for JSON and JSONC configuration file formats without requiring migration to YAML.