v0.2.1

0.2.1 - 2026-06-07

✨ Features

• portal: Add Message History tab to SessionDebugPanel with role badges and paging (#933)
• copilot: Add CLI-fidelity request headers and response observability (Phase 5, #810) (#974)
• conversations: Add pin/unpin support with sorted display ordering (#973)
• gateway: Add log diagnostics ring buffer and REST endpoint for pattern monitoring (#975)

🐛 Bug Fixes

• sessions: Retry ReplaceHistoryAsync on phantom rollback errors with fresh connection (#963)
• gateway: Add compaction circuit breaker to skip after consecutive LLM failures (#964)
• portal: Style interrupt-steer button to match steer, stop, and send controls (#968)
• gateway: Truncate entry content in compaction prompt to prevent context overflow (#969)
• cli: Render startup banner before console encoding strands stderr writer (#978)

🔨 Refactor

• domain: Remove redundant Trim calls before domain primitive From and add architecture enforcement (#970)

🧪 Testing

• portal: Add vertical slice data flow tests for parent-child wiring (#971)
• conversations: Add abstract parity test base for IConversationStore with all 3 implementations (#976)