feat(web): fold duplicates+inbox into /review; sidebar UX cleanup

- /duplicates and /inbox routes removed and folded into /review as
  additional tabs alongside cause tabs; /duplicates keeps a redirect
  for bookmarks.
- LeftSidebar: drop import/inbox tile and favorites; show per-user
  BasePath label at the folder root.
- RightSidebar: split file header into read-only path over editable
  basename (matches sidecar rename contract); date field switches to
  plain-text ISO YYYY-MM-DD (no native datetime picker) with strict
  validation and revert-on-invalid-blur; preserves original hour.
- BulkMetadataSidebar: same ISO-only date input with invalid-state
  styling and apply-button gating.
- BulkActionBar: drop redundant Restore and Undo buttons; ⌘Z still
  reachable via gridKeyNav.
- gridKeyNav: remove favorite toggle (F) alongside the favorites view
  retirement.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

web/src/routes/+page.svelte

@@ -94,8 +94,6 @@
   const sectionLabel = $derived(buildSectionLabel());
   function buildSectionLabel(): string {
     switch (filters.section) {
-      case "favorites":
-        return "Favorites";
       case "review":
         return "Review";
       case "archive":
@@ -184,7 +182,7 @@
   // Root-folder scope is the only client-side filter we apply, and only
   // when the timeline is actually showing a folder view — never when the
   // user is in a heap, has a free-form search, or is on a non-default
-  // section (favorites / archive / review / hidden). Those views are
+  // section (archive / review / hidden). Those views are
   // scoped server-side via the q-DSL and must not be re-filtered here,
   // or labels / search will silently drop subfolder photos when the
   // store hasn't fully hydrated from the URL yet.
@@ -867,8 +865,6 @@
           <p class="text-sm text-muted-foreground">
             {#if filters.section === "archive"}
               Archive is empty.
-            {:else if filters.section === "favorites"}
-              No favorites yet. Heart a photo to add it here.
             {:else if filters.section === "review"}
               Nothing left to review. Photos PhotoPrism's indexer wasn't sure
               about land here — use Keep to accept them into the timeline or