- Add docs/modules/context-hydration.md: documents the ACMS context
hydration pipeline (context_tier_hydrator) that fixes the empty
ContextTierService bug (#1028). Covers hydrate_tiers_from_project,
hydrate_tiers_for_plan, file listing strategies, limits, and
fragment metadata.
- Add docs/modules/git-worktree-sandbox.md: documents the
GitWorktreeSandbox class that isolates plan apply changes in a
dedicated git branch/worktree and merges back on commit (#4454).
Covers full lifecycle, error types, branch naming, and fallback
for non-git projects.
- Update docs/architecture.md: add Git Worktree Sandbox Apply section
and extend ACMS section with context hydration note.
- Update mkdocs.yml: add both new module pages to the Modules nav.
ISSUES CLOSED: #6841
HAL9000