Add Keel Discovery extension to community catalog (#4035)

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

Closes #4026

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docs/community/extensions.md

@@ -72,6 +72,7 @@ The following community-contributed extensions are available in [`catalog.commun
 | Iterate | Iterate on spec documents with a two-phase define-and-apply workflow — refine specs mid-implementation and go straight back to building | `docs` | Read+Write | [spec-kit-iterate](https://github.com/imviancagrace/spec-kit-iterate) |
 | Jira Integration | Create Jira Epics, Stories, and Issues from spec-kit specifications and task breakdowns with configurable hierarchy and custom field support | `integration` | Read+Write | [spec-kit-jira](https://github.com/mbachorik/spec-kit-jira) |
 | Jira Integration (Sync Engine) | Idempotent, drift-aware, fail-closed reconcile engine mirroring spec-kit specs into Jira (Epic per repo, Story per spec, Subtask per phase) | `integration` | Read+Write | [spec-kit-jira-sync](https://github.com/ashbrener/spec-kit-jira-sync) |
+| Keel Discovery | A Spec Kit extension that puts customer evidence upstream of /speckit.specify, and audits what you shipped against it afterwards | `process` | Read+Write | [spec-kit-keel](https://github.com/keeldiscovery/spec-kit-keel) |
 | Learning Extension | Generate educational guides from implementations and enhance clarifications with mentoring context | `docs` | Read+Write | [spec-kit-learn](https://github.com/imviancagrace/spec-kit-learn) |
 | Linear Integration | Mirror spec-kit feature directories into Linear (filesystem → Linear, reconcile-based, unidirectional). | `integration` | Read+Write | [spec-kit-linear-sync](https://github.com/ashbrener/spec-kit-linear-sync) |
 | Linear Weave | Weave Spec Kit into Linear: pull requirements, mirror tasks.md into sub-issues, sync statuses | `integration` | Read+Write | [spec-kit-linear-weave](https://github.com/tonydwoodhouse/spec-kit-linear-weave) |

extensions/catalog.community.json

@@ -2107,6 +2107,40 @@
       "created_at": "2026-06-08T00:00:00Z",
       "updated_at": "2026-06-24T00:00:00Z"
     },
+    "keel": {
+      "name": "Keel Discovery",
+      "id": "keel",
+      "description": "A Spec Kit extension that puts customer evidence upstream of /speckit.specify, and audits what you shipped against it afterwards.",
+      "author": "Keel Discovery",
+      "version": "0.1.1",
+      "download_url": "https://github.com/keeldiscovery/spec-kit-keel/archive/refs/tags/v0.1.1.zip",
+      "repository": "https://github.com/keeldiscovery/spec-kit-keel",
+      "homepage": "https://keeldiscovery.com",
+      "documentation": "https://github.com/keeldiscovery/spec-kit-keel/blob/main/README.md",
+      "changelog": "https://github.com/keeldiscovery/spec-kit-keel/blob/main/CHANGELOG.md",
+      "license": "Apache-2.0",
+      "category": "process",
+      "effect": "read-write",
+      "requires": {
+        "speckit_version": ">=0.15.0"
+      },
+      "provides": {
+        "commands": 5,
+        "hooks": 2
+      },
+      "tags": [
+        "discovery",
+        "evidence",
+        "customer-research",
+        "validation",
+        "traceability"
+      ],
+      "verified": false,
+      "downloads": 0,
+      "stars": 0,
+      "created_at": "2026-08-10T00:00:00Z",
+      "updated_at": "2026-08-10T00:00:00Z"
+    },
     "learn": {
       "name": "Learning Extension",
       "id": "learn",