Extract generalized tasks.json schema from team-lifecycle-v4 to shared
location (~/.ccw/workflows/cli-templates/schemas/). Codex needs explicit
schema since it uses file-based task state (unlike Claude Code's built-in
TaskCreate/TaskUpdate API). Simplify lifecycle-v4 tasks-schema.md to
reference the shared schema and only document skill-specific extensions.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
