Phase 004: remove the desktop shell, website tooling, and bundled hermes CLI

- Drop all desktop/Electron branches, scripts, and UI (title bar, pets,
  desktop bridge); LAN endpoint kind is now web/custom only
- Replace the bundled hermes CLI with user-side installation: add
  GET /api/hermes/cli-status plus a HermesMissingView onboarding guide
- Remove the version-management UI (snapshots handled by git) and prune
  dead website/mcu/claude scripts and lockfile entries

docs/openapi.json

@@ -2675,6 +2675,32 @@
         }
       }
     },
+    "/api/hermes/cli-status": {
+      "get": {
+        "tags": [
+          "Health"
+        ],
+        "summary": "Get cli-status",
+        "description": "GET /api/hermes/cli-status",
+        "operationId": "hermesCliStatus",
+        "security": [
+          {
+            "BearerAuth": []
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          },
+          "401": {
+            "$ref": "#/components/responses/Unauthorized"
+          },
+          "404": {
+            "description": "Not found"
+          }
+        }
+      }
+    },
     "/api/hermes/config": {
       "get": {
         "tags": [