Add a new section to AGENTS.md emphasizing the need to check IDE diagnostics first using the `getIdeDiagnostics` tool, resolve all TypeScript errors and warnings, and only then run the Biome linter to ensure type safety before addressing cosmetic issues.
Add comprehensive database schema naming conventions in AGENTS.md, including modular schema organization, junction table naming, and strict server directory rules prohibiting TypeScript interfaces in favor of Zod schemas. Also add CLAUDE.md as a reference file. This establishes project standards for runtime validation and type safety in the server models.
