fix: resolve conflicts for PR #455

Merge prgs/master into PR branch.

docs/webui-local-dev.md

@@ -50,6 +50,8 @@ Optional environment variables:
 | `/actions` | Gated write-action registry — all disabled in MVP (#434) |
 | `/api/actions` | JSON action registry with capability metadata |
 | `/api/actions/{id}/preview` | Mutation ledger preview (GET, read-only) |
+| `/leases` | Lease and collision visibility (#433) |
+| `/api/leases` | JSON lease/collision export |
 
 All routes are GET-only except registered POST handlers, which still return
 `405` with `read-only-mvp` until write paths ship.
@@ -93,9 +95,17 @@ permission, and profile role from `task_capability_map.py` — aligned with
 `gitea_resolve_task_capability`. Buttons are disabled; previews always render
 a mutation ledger. Direct `attempt_action` calls fail closed without invoking
 MCP tools.
+## Lease visibility (#433)
+
+`/leases` surfaces read-only lease and collision state: local issue lock file,
+in-progress claim inventory (#268), reviewer PR lease comments when present
+(`<!-- mcp-review-lease:v1 -->`, #407), duplicate open PRs per issue (#400),
+and duplicate local branches per issue. Links to collision-history backend
+issues (#267, #268, #400, #407) are included. No lease acquire/release from UI.
 
 ## Tests
 
 ```bash
 pytest tests/test_webui_skeleton.py tests/test_webui_project_registry.py tests/test_webui_prompt_library.py tests/test_webui_queue_dashboard.py tests/test_webui_gated_actions.py -q
+pytest tests/test_webui_skeleton.py tests/test_webui_project_registry.py tests/test_webui_prompt_library.py tests/test_webui_queue_dashboard.py tests/test_webui_lease_visibility.py -q
 ```