Add OKF Knowledge Bundle Generator extension to community catalog (#3585)

Add okf extension submitted by @alexcpn to:
- extensions/catalog.community.json (alphabetical order)
- docs/community/extensions.md community extensions table

Closes #3580

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docs/community/extensions.md

@@ -89,6 +89,7 @@ The following community-contributed extensions are available in [`catalog.commun
 | Multi-Repo Branch Sync | Creates the feature branch in affected sub-repositories and git submodules via plan/tasks hooks | `process` | Read+Write | [multi-repo-sync](https://github.com/fyloss/spec-kit-multi-repo-sync) |
 | Multi-Sites Spec Kit | Multi-site aware specify command with per-site spec folders, auto-increment, and Drupal support | `process` | Read+Write | [spec-kit-multi-sites](https://github.com/teeyo/spec-kit-multi-sites) |
 | .NET Framework to Modern .NET Migration | Orchestrate end-to-end .NET Framework to modern .NET migration across 7 phases, with SDD lifecycle integration | `process` | Read+Write | [spec-kit-fx-to-net](https://github.com/RogerBestMsft/spec-kit-FxToNet) |
+| OKF Knowledge Bundle Generator | Generates and maintains an Open Knowledge Format (OKF v0.1) knowledge bundle from a source-code repository | `docs` | Read+Write | [speckit_ofk](https://github.com/alexcpn/speckit_ofk) |
 | Onboard | Contextual onboarding and progressive growth for developers new to spec-kit projects. Explains specs, maps dependencies, validates understanding, and guides the next step | `process` | Read+Write | [spec-kit-onboard](https://github.com/dmux/spec-kit-onboard) |
 | Optimize | Audit and optimize AI governance for context efficiency — token budgets, rule health, interpretability, compression, coherence, and echo detection | `process` | Read+Write | [spec-kit-optimize](https://github.com/sakitA/spec-kit-optimize) |
 | Orchestration Task Context Management | Adds subagent work-unit orchestration to generated Spec Kit task files | `process` | Read+Write | [spec-kit-orchestration-task-context-management](https://github.com/benizzio/spec-kit-orchestration-task-context-management) |

extensions/catalog.community.json

@@ -1,6 +1,6 @@
 {
   "schema_version": "1.0",
-  "updated_at": "2026-07-16T00:00:00Z",
+  "updated_at": "2026-07-17T00:00:00Z",
   "catalog_url": "https://raw.githubusercontent.com/github/spec-kit/main/extensions/catalog.community.json",
   "extensions": {
     "aide": {
@@ -2680,6 +2680,40 @@
       "created_at": "2026-06-01T00:00:00Z",
       "updated_at": "2026-06-01T00:00:00Z"
     },
+    "okf": {
+      "name": "OKF Knowledge Bundle Generator",
+      "id": "okf",
+      "description": "Generates and maintains an Open Knowledge Format (OKF v0.1) knowledge bundle from a source-code repository.",
+      "author": "Alex Punnen",
+      "version": "0.2.0",
+      "download_url": "https://github.com/alexcpn/speckit_ofk/archive/refs/tags/v0.2.0.zip",
+      "repository": "https://github.com/alexcpn/speckit_ofk",
+      "homepage": "https://github.com/alexcpn/speckit_ofk",
+      "documentation": "https://github.com/alexcpn/speckit_ofk/blob/main/README.md",
+      "changelog": "https://github.com/alexcpn/speckit_ofk/blob/main/CHANGELOG.md",
+      "license": "MIT",
+      "category": "docs",
+      "effect": "read-write",
+      "requires": {
+        "speckit_version": ">=0.12.0"
+      },
+      "provides": {
+        "commands": 3,
+        "hooks": 0
+      },
+      "tags": [
+        "knowledge",
+        "okf",
+        "documentation",
+        "metadata",
+        "catalog"
+      ],
+      "verified": false,
+      "downloads": 0,
+      "stars": 0,
+      "created_at": "2026-07-17T00:00:00Z",
+      "updated_at": "2026-07-17T00:00:00Z"
+    },
     "onboard": {
       "name": "Onboard",
       "id": "onboard",