Sync bundled mission-control to upstream 15fbc94

Pulls in 15 upstream commits since the April 3 bundling snapshot
(msieurthenardier/mission-control). Notable changes:

- agentic-workflow rewritten as the "fast" variant: per-leg design and
  implement, single review and commit across the whole flight
- New Skill-Project Boundary section: skills no longer read or write
  project-owned artifacts by literal heading
- routine-maintenance scoped to post-mission only; adds state-machine
  reachability and cache freshness audits
- Test metrics capture threaded through debrief, maintenance, and flight
- Crew prompts no longer carry skill-required instructions; SKILL.md is
  the protocol
- Worktree git strategy removed; standardized on {target-project}
- Jira artifact template removed upstream

Local URL correction in init-project/README.md preserved
(anthropics/flight-control -> msieurthenardier/mission-control).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

container/mission-control/.claude/skills/init-project/defaults/agent-crews/leg-execution.md

@@ -7,21 +7,21 @@ The Flight Director (Mission Control) orchestrates this phase using the
 ## Crew
 
 ### Developer
-- **Context**: {working-directory}/
+- **Context**: {target-project}/
 - **Model**: Sonnet
 - **Role**: Implements code changes. Also performs design reviews against real
   codebase to validate leg specs before implementation.
 - **Actions**: implement, fix-review-issues, commit, review-leg-design
 
 ### Reviewer
-- **Context**: {working-directory}/
+- **Context**: {target-project}/
 - **Model**: Sonnet (NEVER Opus)
 - **Role**: Reviews code changes for quality, correctness, and criteria compliance.
   Has NO knowledge of Developer's reasoning — only sees resulting changes.
 - **Actions**: review
 
 ### Accessibility Reviewer (optional)
-- **Context**: {working-directory}/
+- **Context**: {target-project}/
 - **Model**: Sonnet
 - **Enabled**: false
 - **Role**: Reviews UI changes for accessibility compliance. Evaluates against
@@ -72,7 +72,6 @@ The Flight Director substitutes these variables in prompts at runtime:
 | `{flight-number}` | Current flight number | All prompts |
 | `{leg-number}` | Current leg number | Leg-scoped prompts |
 | `{leg-artifact-path}` | Path to the leg artifact file | review-leg-design |
-| `{working-directory}` | Resolved working directory for the agent (project root for branch strategy, worktree path for worktree strategy) | All prompts |
 | `{reviewer-issues}` | Full text of reviewer feedback (dynamic) | fix-review-issues |
 
 ## Prompts