merge(master): resolve PR #905 conflicts with requests/linkage

Keep notifications (#648) routes and nav alongside master requests (#643)
and other base updates.

Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>

webui/nav.py

@@ -6,7 +6,8 @@ destination is a GET view or a Phase 1 placeholder. No mutation links.
 
 Nav groups follow the #631 Phase 1 information architecture: Health, Traffic,
 Runtime/Sessions, Projects, Inventory, Timeline, Policy (placeholder), and
-Insights (placeholder). Later-phase surfaces are declared as ``stub`` items and
+Insights (placeholder), joined by the Phase 3 Gitea linkage group (#645).
+Later-phase surfaces are declared as ``stub`` items and
 backed by ``STUB_PAGES`` so their nav links resolve to a graceful placeholder
 instead of a 404.
 """
@@ -46,6 +47,7 @@ NAV_GROUPS: tuple[NavGroup, ...] = (
         NavItem("/leases", "Leases"),
         NavItem("/actions", "Actions"),
         NavItem("/notifications", "Notifications"),
+        NavItem("/requests", "Requests"),
     )),
     NavGroup("Runtime/Sessions", (
         NavItem("/runtime", "Runtime health"),
@@ -61,6 +63,9 @@ NAV_GROUPS: tuple[NavGroup, ...] = (
     NavGroup("Timeline", (
         NavItem("/timeline", "Timeline", "stub"),
     )),
+    NavGroup("Gitea", (
+        NavItem("/gitea", "Issue/PR linkage"),
+    )),
     NavGroup("Policy", (
         NavItem("/policy", "Policy", "stub"),
         NavItem("/prompts", "Prompts"),