This commit refactors how the MCP server determines the project root directory, prioritizing the path provided by the client session (e.g., Cursor) for increased reliability and simplification.
Previously, project root discovery relied on a complex chain of fallbacks (environment variables, CWD searching, package path checks) within `findTasksJsonPath`. This could be brittle and less accurate when running within an integrated environment like Cursor.
Key changes:
- **Prioritize Session Roots:** MCP tools (`add-task`, `add-dependency`, etc.) now first attempt to extract the project root URI directly from `session.roots[0].uri`.
- **New Utility `getProjectRootFromSession`:** Added a utility function in `mcp-server/src/tools/utils.js` to encapsulate the logic for extracting and decoding the root URI from the session object.
- **Refactor MCP Tools:** Updated tools (`add-task.js`, `add-dependency.js`) to use `getProjectRootFromSession`.
- **Simplify `findTasksJsonPath`:** Prioritized `args.projectRoot`, removed checks for `TASK_MASTER_PROJECT_ROOT` env var and package directory fallback. Retained CWD search and cache check for CLI compatibility.
- **Fix `reportProgress` Usage:** Corrected parameters in `add-dependency.js`.
This change makes project root determination more robust for the MCP server while preserving discovery mechanisms for the standalone CLI.
- Update all tool definitions to use z.string().optional() for projectRoot
- Fix direct function implementations to use findTasksJsonPath(args, log) pattern
- Enables consistent project root detection without requiring explicit params
- Update changeset to document these improvements
This change ensures MCP tools work properly with the smart project root
detection system, removing the need for explicit projectRoot parameters in
client applications. Improves usability and reduces integration friction.
