Add workspace session level goals feature

[Waishnav]

Summary

• add opt-in workspace goal persistence behind DEVSPACE_GOALS
• expose get_goal, set_goal, update_goal, and clear_goal MCP tools when enabled
• document that this is not one-for-one Codex goal parity and list current lifecycle/token/thread-id gaps

Verification

• npm test
• npm run typecheck

[coderabbitai]

Important

Review skipped

Draft detected.

Please check the settings in the CodeRabbit UI or the .coderabbit.yaml file in this repository. To trigger a single review, invoke the @coderabbitai review command.

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 7cdef82f-face-43dd-bb2b-c1046be25b98

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

Use the checkbox below for a quick retry:

• 🔍 Trigger review

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch devspace-workspace-goals

---

_{Comment @coderabbitai help to get the list of available commands.}