feat(story-5.1): implement markdown telemetry report generation skill
Create bmad-memtrace-telemetry skill with introspection protocol,
embedded Markdown template (42 tools across 8 categories), and
confinement rules for post-sprint Memtrace usage reporting.
Code review patches applied:
- Expanded tool catalog to cover all ~42 Memtrace MCP tools
- Added history-unavailable fallback guidance
- Added objective activation criteria (Memtrace tool call check)
- Added output directory creation, collision guard, permission handling
7d5ffc5280