feat add command palette component

docs/CHECKLIST.md

@@ -9,18 +9,16 @@ is the first downstream consumer; its screens drive the order.
 
 ## Next
 
-- [ ] **Combobox** (M11) — type-to-filter pickers; adopt gpuikit's
-      `on_create` / `keep_unmatched` blur modes.
+- [ ] **Command palette** (M12) — filtered actions; the matcher stays
+      caller-owned.
     - [x] API sketch
-    - [x] Implementation (theme-baked, motion inline per AGENTS.md)
+    - [x] Implementation (theme-baked, no entry motion per AGENTS.md)
     - [x] Tests
     - [x] Gallery panel
     - [ ] Review
 
 ## Queue — to follow
 
-- [ ] **Command palette** (M12) — filtered actions; the matcher stays
-      caller-owned.
 - [ ] **VirtualList** (M13, `data`) — thin `uniform_list` binding for commit
       histories and the inbox.
 - [ ] **Code view** (M14, opens `crates/editor`) — tree-sitter highlighting.
@@ -63,6 +61,7 @@ is the first downstream consumer; its screens drive the order.
       settings-row variants
 - [x] Status dot — colored state bead, Badge's variant vocabulary, optional
       screen-reader label
+- [x] Combobox — type-to-filter picker, create / keep / revert blur modes
 
 ### data (`crates/data`)