chore: sync pipeline story/bug files in worktree

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.story_kit/work/2_current/70_story_server_owned_agent_completion_remove_report_completion_dependency.md

@@ -0,0 +1,27 @@
+---
+name: Server-owned agent completion: remove report_completion dependency
+test_plan: approved
+---
+
+# Story 70: Server-owned agent completion: remove report_completion dependency
+
+## User Story
+
+As a developer using story-kit, I want the server to automatically run acceptance
+gates and advance the pipeline when an agent process exits, so that the pipeline
+does not stall when an agent forgets or fails to call `report_completion`.
+
+## Acceptance Criteria
+
+- [ ] When an agent process exits normally, the server automatically runs acceptance gates (uncommitted changes check + cargo clippy + tests)
+- [ ] When acceptance gates pass on natural process exit, the agent status is set to `Completed` and the pipeline advances
+- [ ] When acceptance gates fail on natural process exit, the agent status is set to `Failed` and the pipeline handles the failure appropriately
+- [ ] `report_completion` is removed from the MCP tools list (agents no longer see or call it)
+- [ ] The default agent prompt no longer instructs agents to call `report_completion`
+- [ ] If a completion was already recorded before the process exits (legacy path), the server does not run gates a second time
+
+## Out of Scope
+
+- Removing the concept of a `CompletionReport` struct (still used internally)
+- Changing the pipeline advancement logic itself
+- Frontend changes