Update Superpowers Implementation Bridge to v1.2.0

Update speckit-superpowers-bridge extension submitted by @lihan3238:
- extensions/catalog.community.json (version, download_url, updated_at)
- docs/community/extensions.md community extensions table (no change needed)

Closes #4180

Assisted-by: GitHub Copilot (model: claude-sonnet-4.6, autonomous)
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: github-actions[bot]

extensions/catalog.community.json

@@ -1,6 +1,6 @@
 {
   "schema_version": "1.0",
-  "updated_at": "2026-08-17T00:00:00Z",
+  "updated_at": "2026-08-18T00:00:00Z",
   "catalog_url": "https://raw.githubusercontent.com/github/spec-kit/main/extensions/catalog.community.json",
   "extensions": {
     "adrkit": {
@@ -4411,8 +4411,8 @@
       "id": "speckit-superpowers-bridge",
       "description": "Thin orchestrator between Spec Kit (design) and Superpowers (implementation). Cross-agent.",
       "author": "lihan3238",
-      "version": "1.1.0",
-      "download_url": "https://github.com/lihan3238/speckit-superpowers-bridge/releases/download/v1.1.0/speckit-superpowers-bridge-v1.1.0.zip",
+      "version": "1.2.0",
+      "download_url": "https://github.com/lihan3238/speckit-superpowers-bridge/releases/latest/download/speckit-superpowers-bridge.zip",
       "repository": "https://github.com/lihan3238/speckit-superpowers-bridge",
       "homepage": "https://github.com/lihan3238/speckit-superpowers-bridge",
       "documentation": "https://github.com/lihan3238/speckit-superpowers-bridge#readme",
@@ -4455,7 +4455,7 @@
       "downloads": 0,
       "stars": 0,
       "created_at": "2026-05-15T00:00:00Z",
-      "updated_at": "2026-06-16T00:00:00Z"
+      "updated_at": "2026-08-18T00:00:00Z"
     },
     "speckit-utils": {
       "name": "SDD Utilities",