Add Coding Standards Drift Control extension to community catalog (#2934)

Add coding-standards-drift-control extension submitted by @benizzio to:
- extensions/catalog.community.json (alphabetical order)
- docs/community/extensions.md community extensions table

Closes #2923

Co-authored-by: Manfred Riem <mnriem@users.noreply.github.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

docs/community/extensions.md

@@ -44,6 +44,7 @@ The following community-contributed extensions are available in [`catalog.commun
 | CI Guard | Spec compliance gates for CI/CD — verify specs exist, check drift, and block merges on gaps | `process` | Read-only | [spec-kit-ci-guard](https://github.com/Quratulain-bilal/spec-kit-ci-guard) |
 | Checkpoint Extension | Commit the changes made during the middle of the implementation, so you don't end up with just one very large commit at the end | `code` | Read+Write | [spec-kit-checkpoint](https://github.com/aaronrsun/spec-kit-checkpoint) |
 | Cleanup Extension | Post-implementation quality gate that reviews changes, fixes small issues (scout rule), creates tasks for medium issues, and generates analysis for large issues | `code` | Read+Write | [spec-kit-cleanup](https://github.com/dsrednicki/spec-kit-cleanup) |
+| Coding Standards Drift Control | Generate coding-standards drift reports and remediation tasks for active Spec Kit features | `code` | Read+Write | [spec-kit-coding-standards-drift-control](https://github.com/benizzio/spec-kit-coding-standards-drift-control) |
 | Conduct Extension | Orchestrates spec-kit phases via sub-agent delegation to reduce context pollution. | `process` | Read+Write | [spec-kit-conduct-ext](https://github.com/twbrandon7/spec-kit-conduct-ext) |
 | Confluence Extension | Create a doc in Confluence summarizing the specifications and planning files | `integration` | Read+Write | [spec-kit-confluence](https://github.com/aaronrsun/spec-kit-confluence) |
 | Cost Tracker | Track real LLM dollar cost across SDD workflows — per-feature budgets, per-integration comparison, and finance-ready exports | `visibility` | Read+Write | [spec-kit-cost](https://github.com/Quratulain-bilal/spec-kit-cost) |

extensions/catalog.community.json

@@ -1,6 +1,6 @@
 {
   "schema_version": "1.0",
-  "updated_at": "2026-06-09T00:00:00Z",
+  "updated_at": "2026-06-11T00:00:00Z",
   "catalog_url": "https://raw.githubusercontent.com/github/spec-kit/main/extensions/catalog.community.json",
   "extensions": {
     "aide": {
@@ -736,6 +736,39 @@
       "created_at": "2026-02-22T00:00:00Z",
       "updated_at": "2026-02-22T00:00:00Z"
     },
+    "coding-standards-drift-control": {
+      "name": "Coding Standards Drift Control",
+      "id": "coding-standards-drift-control",
+      "description": "Generate coding-standards drift reports and remediation tasks for active Spec Kit features",
+      "author": "Igor Benicio de Mesquita",
+      "version": "0.3.1",
+      "download_url": "https://github.com/benizzio/spec-kit-coding-standards-drift-control/archive/refs/tags/v0.3.1.zip",
+      "repository": "https://github.com/benizzio/spec-kit-coding-standards-drift-control",
+      "homepage": "https://github.com/benizzio/spec-kit-coding-standards-drift-control",
+      "documentation": "https://github.com/benizzio/spec-kit-coding-standards-drift-control#readme",
+      "changelog": "https://github.com/benizzio/spec-kit-coding-standards-drift-control/blob/main/CHANGELOG.md",
+      "license": "MIT",
+      "category": "code",
+      "effect": "read-write",
+      "requires": {
+        "speckit_version": ">=0.2.0"
+      },
+      "provides": {
+        "commands": 2,
+        "hooks": 1
+      },
+      "tags": [
+        "analysis",
+        "standards",
+        "quality",
+        "maintenance"
+      ],
+      "verified": false,
+      "downloads": 0,
+      "stars": 0,
+      "created_at": "2026-06-11T00:00:00Z",
+      "updated_at": "2026-06-11T00:00:00Z"
+    },
     "conduct": {
       "name": "Conduct Extension",
       "id": "conduct",