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

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+---
+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

.story_kit/work/2_current/72_bug_story_creation_does_not_quote_yaml_special_characters_in_name.md

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+---
+name: "Work item creation does not quote YAML special characters or include front matter"
+test_plan: pending
+---
+
+# Bug 72: Work item creation does not quote YAML special characters or include front matter
+
+## Description
+
+Two related issues in server-side work item creation:
+
+1. **create_story** writes the `name` value into YAML front matter without quoting. If the name contains YAML-special characters like colons, the resulting front matter is invalid YAML and fails to parse.
+
+2. **create_bug** does not write YAML front matter at all (no `---` block with `name` and `test_plan`). The UI/parser expects front matter on all work items in the pipeline, so bug files show parse errors.
+
+## How to Reproduce
+
+### Issue 1 (create_story)
+1. Call create_story with a name containing a colon, e.g. "Server-owned agent completion: remove report_completion dependency"
+2. Open the generated .md file
+3. Observe the front matter parser rejects it: "mapping values are not allowed in this context"
+
+### Issue 2 (create_bug)
+1. Call create_bug with any name
+2. Open the generated .md file
+3. Observe there is no YAML front matter block — just a markdown heading
+
+## Actual Result
+
+- create_story: Invalid front matter when name contains colons
+- create_bug: No front matter at all
+
+## Expected Result
+
+- All work item creation methods should write valid YAML front matter with quoted `name` values
+- create_bug should include `---` front matter block with `name` and `test_plan` fields, consistent with create_story
+
+## Acceptance Criteria
+
+- [ ] create_story quotes name values containing YAML-special characters
+- [ ] create_bug writes YAML front matter with name and test_plan fields
+- [ ] Existing tests updated to cover special character handling