feat(registry): add privacy category and depth-estimation skill entry

Adds 'privacy' as a new skill category in skills.json for transforms that
anonymize camera feeds (depth maps, blur, blind mode). Registers the
depth-estimation skill (v1.1.0) with privacy-specific capabilities
(live_transform, privacy_overlay) and UI unlock flags (blind_mode).

Author: solderzzc

skills.json

@@ -7,6 +7,7 @@
     "detection": "Object detection, person recognition, visual grounding",
     "analysis": "VLM scene understanding, interactive segmentation",
     "transformation": "Depth estimation, style transfer, video effects",
+    "privacy": "Privacy transforms — depth maps, blur, anonymization for blind mode",
     "annotation": "Dataset labeling, COCO export, training data",
     "camera-providers": "Camera brand integrations — clip feed, live stream",
     "streaming": "RTSP/WebRTC live view via go2rtc",
@@ -130,6 +131,40 @@
         "monitoring",
         "recording"
       ]
+    },
+    {
+      "id": "depth-estimation",
+      "name": "Depth Estimation (Privacy)",
+      "description": "Privacy-first depth map transforms — anonymize camera feeds with Depth Anything v2 while preserving spatial awareness.",
+      "version": "1.1.0",
+      "category": "privacy",
+      "path": "skills/transformation/depth-estimation",
+      "tags": [
+        "privacy",
+        "depth",
+        "transform",
+        "anonymization",
+        "blind-mode"
+      ],
+      "platforms": [
+        "linux-x64",
+        "linux-arm64",
+        "darwin-arm64",
+        "darwin-x64",
+        "win-x64"
+      ],
+      "requirements": {
+        "python": ">=3.9",
+        "ram_gb": 2
+      },
+      "capabilities": [
+        "live_transform",
+        "privacy_overlay"
+      ],
+      "ui_unlocks": [
+        "privacy_overlay",
+        "blind_mode"
+      ]
     }
   ]
 }