Update Architecture Guard extension to v1.8.9 (#2723)

Update architecture-guard extension submitted by @DyanGalih:
- extensions/catalog.community.json (version, download_url, description, tags)
- docs/community/extensions.md community extensions table

Closes #2696

docs/community/extensions.md

@@ -27,7 +27,7 @@ The following community-contributed extensions are available in [`catalog.commun
 | AI-Driven Engineering (AIDE) | A structured 7-step workflow for building new projects from scratch with AI assistants — from vision through implementation | `process` | Read+Write | [aide](https://github.com/mnriem/spec-kit-extensions/tree/main/aide) |
 | API Evolve | Managed API contract evolution — breaking-change detection, semver enforcement, deprecation orchestration, and lifecycle gates across REST, GraphQL, and gRPC | `process` | Read+Write | [spec-kit-api-evolve](https://github.com/Quratulain-bilal/spec-kit-api-evolve) |
 | Architect Impact Previewer | Predicts architectural impact, complexity, and risks of proposed changes before implementation. | `visibility` | Read-only | [spec-kit-architect-preview](https://github.com/UmmeHabiba1312/spec-kit-architect-preview) |
-| Architecture Guard | Continuous architecture governance for AI-assisted development. Reviews specs, plans, and code for architecture drift, producing structured refactor tasks and evolution proposals. | `process` | Read+Write | [spec-kit-architecture-guard](https://github.com/DyanGalih/spec-kit-architecture-guard) |
+| Architecture Guard | Framework-agnostic architecture review extension for validating implementation against governance and architecture constitutions, detecting architectural drift, and generating non-blocking refactor tasks | `process` | Read+Write | [spec-kit-architecture-guard](https://github.com/DyanGalih/spec-kit-architecture-guard) |
 | Architecture Workflow | Generate or reverse project-level 4+1 architecture view artifacts and synthesis | `docs` | Read+Write | [spec-kit-arch](https://github.com/bigsmartben/spec-kit-arch) |
 | Archive Extension | Archive merged features into main project memory. | `docs` | Read+Write | [spec-kit-archive](https://github.com/stn1slv/spec-kit-archive) |
 | Azure DevOps Integration | Sync user stories and tasks to Azure DevOps work items using OAuth authentication | `integration` | Read+Write | [spec-kit-azure-devops](https://github.com/pragya247/spec-kit-azure-devops) |

extensions/catalog.community.json

@@ -1,6 +1,6 @@
 {
   "schema_version": "1.0",
-  "updated_at": "2026-05-26T00:00:00Z",
+  "updated_at": "2026-05-27T00:00:00Z",
   "catalog_url": "https://raw.githubusercontent.com/github/spec-kit/main/extensions/catalog.community.json",
   "extensions": {
     "aide": {
@@ -240,10 +240,10 @@
     "architecture-guard": {
       "name": "Architecture Guard",
       "id": "architecture-guard",
-      "description": "Continuous architecture governance for AI-assisted development. Reviews specs, plans, and code for architecture drift, producing structured refactor tasks and evolution proposals.",
+      "description": "Framework-agnostic architecture review extension for validating implementation against governance and architecture constitutions, detecting architectural drift, and generating non-blocking refactor tasks.",
       "author": "DyanGalih",
-      "version": "1.8.4",
-      "download_url": "https://github.com/DyanGalih/spec-kit-architecture-guard/archive/refs/tags/v1.8.4.zip",
+      "version": "1.8.9",
+      "download_url": "https://github.com/DyanGalih/spec-kit-architecture-guard/archive/refs/tags/v1.8.9.zip",
       "repository": "https://github.com/DyanGalih/spec-kit-architecture-guard",
       "homepage": "https://github.com/DyanGalih/spec-kit-architecture-guard",
       "documentation": "https://github.com/DyanGalih/spec-kit-architecture-guard/blob/main/README.md",
@@ -258,17 +258,18 @@
       },
       "tags": [
         "architecture",
-        "governance",
-        "drift-detection",
+        "spec-kit",
+        "review",
         "refactor",
-        "monolithic",
-        "microservices"
+        "workflow",
+        "governance",
+        "guardrails"
       ],
       "verified": false,
       "downloads": 0,
       "stars": 0,
       "created_at": "2026-05-05T07:26:00Z",
-      "updated_at": "2026-05-11T14:58:00Z"
+      "updated_at": "2026-05-27T00:00:00Z"
     },
     "archive": {
       "name": "Archive Extension",