feat: add templates for epics, product brief, and requirements PRD

- Created a new directory structure for epics and stories with templates for individual epics and an index file.
- Added a product brief template for generating product brief documents in Phase 2.
- Introduced a requirements PRD template for generating a Product Requirements Document as a directory of individual requirement files in Phase 3.

feat: implement V2PipelineTab component for Memory V2 management

- Developed the V2PipelineTab component to manage extraction and consolidation processes.
- Included ExtractionCard and ConsolidationCard components to handle respective functionalities.
- Added JobsList component to display job statuses and allow filtering by job kind.

feat: create hooks for Memory V2 pipeline

- Implemented custom hooks for managing extraction and consolidation statuses, as well as job listings.
- Added mutation hooks to trigger extraction and consolidation processes with automatic query invalidation on success.

.claude/skills/team-lifecycle-v4/roles/planner/role.md

@@ -105,15 +105,16 @@ Requirements: 2-7 tasks with id, title, files[].change, convergence.criteria, de
 
 **Session files**:
 ```
+<session-folder>/explorations/          (shared cache, written by explore subagent)
++-- cache-index.json
++-- explore-<angle>.json
+
 <session-folder>/plan/
-+-- exploration-<angle>.json       (per angle, from shared cache)
-+-- explorations-manifest.json     (summary)
++-- explorations-manifest.json          (summary, references ../explorations/)
 +-- plan.json
 +-- .task/TASK-*.json
 ```
 
-Note: exploration files may be symlinked or referenced from `<session-folder>/explorations/` (shared cache location).
-
 ---
 
 ## Error Handling