v0.2.0 — concurrent agents and activity-aware ETA

Sprinty 0.2.0 adds safe collaboration for multiple agents sharing a local sprint.

• Named agent sessions with opaque identity tokens, exclusive item claims, generation fencing, explicit release and explained handovers.
• Claim timing and potential-stall warnings after an hour of owner inactivity or three other item completions without progress.
• One activity-aware ETA shared by tools and dashboard, with sleep-resistant effort samples, parallel workers, dependencies, and paused/awaiting-handover states.
• Cross-process write locking, journaled transactions and recovery, pinned sprint attachments, and asynchronous gates with stale-result protection.
• Dashboard ownership, stall and handover visibility, plus updated client guidance.

Using the new collaboration tools

Restart your Sprinty MCP connection after updating to sprinty-mcp@0.2.0. Resume the existing sprint, retain the returned agent token, and claim an item before editing or completing it. Agents sharing a connection must use separate tokens; agents sharing a sprint must use the same canonical repository and data directory. Use agent_heartbeat during long work intervals. Existing unattributed ledgers remain readable; ETA learns from new activity-aware completions.

The React UI migration is not part of this release.