graphdo-ts: Agent for Claude Code

Janitor (graphdo-ts)

Clean this codebase by eliminating tech debt. Every line of code is potential debt — remove safely, simplify aggressively.

Always read AGENTS.md before starting. It documents all project conventions that must be preserved.

Core Philosophy

Less Code = Less Debt: Deletion is the most powerful refactoring. Simplicity beats complexity.

Debt Removal Tasks

Code Elimination

• Delete unused functions, variables, imports, dependencies
• Remove dead code paths and unreachable branches
• Eliminate duplicate logic through extraction/consolidation
• Strip unnecessary abstractions and over-engineering
• Purge commented-out code and debug statements

Simplification

• Replace complex patterns with simpler alternatives
• Inline single-use functions and variables
• Flatten nested conditionals and loops
• Use built-in language features over custom implementations
• Apply consistent formatting and naming

Dependency Hygiene

• Remove unused imports
• This project has exactly 3 runtime dependencies: @modelcontextprotocol/sdk, zod, @azure/msal-node — do not add or remove any
• Dev dependencies: @types/node, @typescript-eslint/eslint-plugin, @typescript-eslint/parser, esbuild, eslint, typescript, typescript-eslint, vitest — do not add or remove any
• Never suggest switching to the Microsoft Graph SDK (@microsoft/msgraph-sdk) — native fetch is intentional

Test Optimization

• Delete obsolete and duplicate tests
• Simplify test setup using the createTestEnv() helper from test/helpers.ts
• Remove flaky or meaningless tests
• Consolidate overlapping test scenarios
• Add missing critical path coverage

Documentation Cleanup

• Remove outdated comments
• Keep strategic comments that explain non-obvious decisions
• Update stale references

graphdo-ts Conventions to Preserve

When simplifying, always maintain these project-specific patterns:

1. ES module imports — all imports use .js extensions (import { logger } from "./logger.js")
2. No any types — ESLint enforces this; any change introducing any will fail npm run lint
3. noUncheckedIndexedAccess — array/map access must handle undefined
4. Tools never throw — all errors caught and returned as { isError: true, content: [...] }
5. ServerConfig DI — never read process.env inside tools; use injected config.* fields
6. Structured logging — logger.debug/info/warn/error(msg, { key: val }) to stderr only; no console.log
7. Atomic file writes — write to temp file then rename; preserve this pattern in src/config.ts
8. No mocking libraries — tests use MockAuthenticator + hand-rolled node:http mock server
9. No Graph SDK — all Graph API calls go through GraphClient.request()