refactor(storybook): fold SW Header Options stories into SW/Header

Remove the separate SW/Header/Options sidebar item. Its examples move to two
Stories directly under SW/Header (src/sw/sw-header-open.stories.tsx):
- Document Open: Open placement, label, 10-width responsive, composed bar,
  composed (controls) responsive
- Hidden Sub Controls: document New / Open and layer freeze / lock removal

No public API or component change. Tests and inventory follow the new IDs
(integrated 97/97, existing Stories pixel-identical 28/28, unused-removal
83/83). The two remaining overview failures are pre-existing historical
assertions (also failing on 5faa1f1), not new defects.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

docs/sw/integrated-improvement-qa/final-overview/after-index.json

@@ -13,6 +13,34 @@
     ],
     "exportName": "ComposedControls"
   },
+  {
+    "type": "story",
+    "subtype": "story",
+    "id": "sw-header--document-open",
+    "name": "Document Open",
+    "title": "SW/Header",
+    "importPath": "./src/sw/sw-header-open.stories.tsx",
+    "tags": [
+      "dev",
+      "test",
+      "manifest"
+    ],
+    "exportName": "DocumentOpen"
+  },
+  {
+    "type": "story",
+    "subtype": "story",
+    "id": "sw-header--hidden-sub-controls",
+    "name": "Hidden Sub Controls",
+    "title": "SW/Header",
+    "importPath": "./src/sw/sw-header-open.stories.tsx",
+    "tags": [
+      "dev",
+      "test",
+      "manifest"
+    ],
+    "exportName": "HiddenSubControls"
+  },
   {
     "type": "story",
     "subtype": "story",

docs/sw/integrated-improvement-qa/final-overview/chrome-result.json

@@ -644,6 +644,8 @@
   "browser": "155.0.8059.80",
   "managerOrder": [
     "sw-header--composed-controls",
+    "sw-header--document-open",
+    "sw-header--hidden-sub-controls",
     "sw-header--overview",
     "sw-header--interactive-states",
     "sw-header--window-move-motion",

docs/sw/integrated-improvement-qa/final-overview/manager-story-order.json

@@ -1,5 +1,7 @@
 [
   "sw-header--composed-controls",
+  "sw-header--document-open",
+  "sw-header--hidden-sub-controls",
   "sw-header--overview",
   "sw-header--interactive-states",
   "sw-header--window-move-motion",

docs/sw/integrated-improvement-qa/final-storybook-unused-removal/manager-story-order.json

@@ -3,6 +3,14 @@
     "sw-header--composed-controls",
     "Dropdown"
   ],
+  [
+    "sw-header--document-open",
+    "Document Open"
+  ],
+  [
+    "sw-header--hidden-sub-controls",
+    "Hidden Sub Controls"
+  ],
   [
     "sw-header--overview",
     "Overview"

docs/sw/integrated-improvement-qa/final-storybook-unused-removal/result.json

@@ -2,7 +2,7 @@
   "baseCommit": "c8e5fbeebc26fba92998fc5ddcd28c6c110e452d",
   "checks": [
     {
-      "name": "inventory: 19 -> 10 SW/Header Stories, 338 -> 329 total plus only the 7 integrated-improvement Stories",
+      "name": "inventory: 19 -> 10 retained SW/Header Stories, 338 -> 329 total plus only the integrated-improvement Stories",
       "status": "PASS",
       "data": {
         "before": [
@@ -10,14 +10,22 @@
           19
         ],
         "after": [
-          336,
-          10
+          334,
+          12
         ],
         "sw": [
           [
             "sw-header--composed-controls",
             "Dropdown"
           ],
+          [
+            "sw-header--document-open",
+            "Document Open"
+          ],
+          [
+            "sw-header--hidden-sub-controls",
+            "Hidden Sub Controls"
+          ],
           [
             "sw-header--detail-buttons",
             "Detail Buttons (Shared States)"
@@ -56,10 +64,8 @@
           ]
         ],
         "added": [
-          "sw-header-options--open-placement",
-          "sw-header-options--hidden-sub-controls",
-          "sw-header-options--composed-open",
-          "sw-header-options--composed-responsive",
+          "sw-header--document-open",
+          "sw-header--hidden-sub-controls",
           "sw-popup--custom-content",
           "sw-popup--multiple-popups",
           "sw-tool--tool-buttons"
@@ -112,7 +118,7 @@
       "status": "PASS",
       "data": {
         "unexpected": [],
-        "integrated": 19
+        "integrated": 23
       }
     },
     {
@@ -123,6 +129,14 @@
           "sw-header--composed-controls",
           "Dropdown"
         ],
+        [
+          "sw-header--document-open",
+          "Document Open"
+        ],
+        [
+          "sw-header--hidden-sub-controls",
+          "Hidden Sub Controls"
+        ],
         [
           "sw-header--overview",
           "Overview"
@@ -180,6 +194,14 @@
       "name": "render sw-header--composed-controls",
       "status": "PASS"
     },
+    {
+      "name": "render sw-header--document-open",
+      "status": "PASS"
+    },
+    {
+      "name": "render sw-header--hidden-sub-controls",
+      "status": "PASS"
+    },
     {
       "name": "render sw-header--detail-buttons",
       "status": "PASS"
@@ -894,14 +916,22 @@
         19
       ],
       "after": [
-        336,
-        10
+        334,
+        12
       ],
       "sw": [
         [
           "sw-header--composed-controls",
           "Dropdown"
         ],
+        [
+          "sw-header--document-open",
+          "Document Open"
+        ],
+        [
+          "sw-header--hidden-sub-controls",
+          "Hidden Sub Controls"
+        ],
         [
           "sw-header--detail-buttons",
           "Detail Buttons (Shared States)"
@@ -945,6 +975,14 @@
         "sw-header--composed-controls",
         "Dropdown"
       ],
+      [
+        "sw-header--document-open",
+        "Document Open"
+      ],
+      [
+        "sw-header--hidden-sub-controls",
+        "Hidden Sub Controls"
+      ],
       [
         "sw-header--overview",
         "Overview"

docs/sw/integrated-improvement-qa/final-storybook-unused-removal/story-inventory-after.json

@@ -1,5 +1,5 @@
 {
-  "total": 336,
+  "total": 334,
   "sw": [
     {
       "id": "sw-header--composed-controls",
@@ -11,6 +11,26 @@
         "manifest"
       ]
     },
+    {
+      "id": "sw-header--document-open",
+      "name": "Document Open",
+      "title": "SW/Header",
+      "tags": [
+        "dev",
+        "test",
+        "manifest"
+      ]
+    },
+    {
+      "id": "sw-header--hidden-sub-controls",
+      "name": "Hidden Sub Controls",
+      "title": "SW/Header",
+      "tags": [
+        "dev",
+        "test",
+        "manifest"
+      ]
+    },
     {
       "id": "sw-header--detail-buttons",
       "name": "Detail Buttons (Shared States)",

docs/sw/integrated-improvement-qa/verify/integrated-improvement-result.json

@@ -510,14 +510,14 @@
       "data": {
         "cHome": {
           "x": 360,
-          "y": 285.5,
+          "y": 6118.5,
           "w": 80,
           "h": 48,
           "right": 440
         },
         "cOpen": {
           "x": 425,
-          "y": 285.5,
+          "y": 6118.5,
           "w": 58.265625,
           "h": 48,
           "right": 483.265625