Make sample guide generation deterministic; regenerate examples

Fixed guide/step ids stop examples/ from churning on every verify run.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

examples/sample-exports/json/reset-a-password-in-admin-portal.json

@@ -1,12 +1,12 @@
 {
   "format": "stepforge-guide",
   "version": 1,
-  "generatedAt": "2026-06-11T02:32:07.575Z",
+  "generatedAt": "2026-06-11T02:40:34.633Z",
   "guide": {
     "title": "Reset a password in Admin Portal",
     "descriptionHtml": "<p>Offline sample guide showing capture, annotations, rich text, and exports.</p>",
-    "createdAt": "2026-06-11T02:32:07Z",
-    "updatedAt": "2026-06-11T02:32:07Z"
+    "createdAt": "2026-06-11T02:40:34Z",
+    "updatedAt": "2026-06-11T02:40:34Z"
   },
   "steps": [
     {
@@ -23,7 +23,7 @@
       },
       "annotations": [
         {
-          "id": "ann-54403181-b784-4d9b-9285-b9504a7c2f8d",
+          "id": "ann-c74bec0b-6cf4-47ba-b228-73c623637138",
           "type": "rect",
           "x": 0.275,
           "y": 0.18,
@@ -39,7 +39,7 @@
           }
         },
         {
-          "id": "ann-303a7cdc-4866-4667-8046-33ba7bfb8687",
+          "id": "ann-2491a459-e852-4c08-bb55-edf78a47a6e9",
           "type": "number",
           "x": 0.3,
           "y": 0.08,
@@ -82,7 +82,7 @@
       },
       "annotations": [
         {
-          "id": "ann-80ff688a-e1ca-46e7-9519-0dd38240d9c3",
+          "id": "ann-f6b0cfdd-a867-4811-ad9c-7b31ae7a0476",
           "type": "arrow",
           "x": 0.47,
           "y": 0.24,
@@ -98,7 +98,7 @@
           }
         },
         {
-          "id": "ann-bd413182-4146-448b-95f8-72630f55437d",
+          "id": "ann-3d007177-1e5b-4ed0-8f26-43cd82c7f37d",
           "type": "tooltip",
           "x": 0.53,
           "y": 0.13,
@@ -115,7 +115,7 @@
           }
         },
         {
-          "id": "ann-537b3971-6361-4763-8424-da8980479507",
+          "id": "ann-751baf23-eab9-44fc-a811-5c9558de8b38",
           "type": "number",
           "x": 0.31,
           "y": 0.08,
@@ -178,7 +178,7 @@
       },
       "annotations": [
         {
-          "id": "ann-281ebcd6-e0e3-4304-9232-ee25353e2321",
+          "id": "ann-88b33206-1bea-463f-a47d-f2e081311b44",
           "type": "blur",
           "x": 0.49,
           "y": 0.32,
@@ -195,7 +195,7 @@
           "radius": 12
         },
         {
-          "id": "ann-6224b838-a39d-4fae-9b68-6a4f2f8af60d",
+          "id": "ann-3a833f5a-5be3-44d1-bb61-2546cab82a6b",
           "type": "highlight",
           "x": 0.47,
           "y": 0.24,
@@ -211,7 +211,7 @@
           }
         },
         {
-          "id": "ann-6dd50b00-6f29-431b-bee0-c217032af1a4",
+          "id": "ann-c25a8e0c-b849-4978-881a-c54c3c0ff866",
           "type": "number",
           "x": 0.31,
           "y": 0.08,