Update MemoryLint extension to v1.5.1 (#3000)

Update memorylint extension submitted by @RbBtSn0w:
- extensions/catalog.community.json (version, download_url, description, provides)
- docs/community/extensions.md community extensions table

Closes #2974

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

docs/community/extensions.md

@@ -74,7 +74,7 @@ The following community-contributed extensions are available in [`catalog.commun
 | MDE | Minimal model-driven engineering workflow with setup, next, and status commands | `process` | Read+Write | [spec-kit-mde](https://github.com/AI-MDE/spec-kit-mde) |
 | Memory Loader | Loads .specify/memory/ files before lifecycle commands so LLM agents have project governance context | `docs` | Read-only | [spec-kit-memory-loader](https://github.com/KevinBrown5280/spec-kit-memory-loader) |
 | Memory MD | Spec Kit extension for repository-native Markdown memory that captures durable decisions, bugs, and project context | `docs` | Read+Write | [spec-kit-memory-hub](https://github.com/DyanGalih/spec-kit-memory-hub) |
-| MemoryLint | Agent memory governance tool: Automatically audits and fixes boundary conflicts between AGENTS.md and the constitution. | `process` | Read+Write | [memorylint](https://github.com/RbBtSn0w/spec-kit-extensions/tree/main/memorylint) |
+| MemoryLint | Evidence-driven instruction drift checker: audits agent memory files for boundary, reality, conflict, and redundancy drift. | `process` | Read+Write | [memorylint](https://github.com/RbBtSn0w/spec-kit-extensions/tree/main/memorylint) |
 | Microsoft 365 Integration | Fetch Teams messages, meeting transcripts, and SharePoint/OneDrive files as local Markdown for spec generation | `integration` | Read+Write | [spec-kit-m365](https://github.com/BenBtg/spec-kit-m365) |
 | Multi-Model Review | Cross-model Spec Kit handoffs for spec authoring, implementation routing, and review. | `process` | Read+Write | [multi-model-review](https://github.com/formin/multi-model-review) |
 | 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) |

extensions/catalog.community.json

@@ -1961,10 +1961,10 @@
     "memorylint": {
       "name": "MemoryLint",
       "id": "memorylint",
-      "description": "Agent memory governance tool: Automatically audits and fixes boundary conflicts between AGENTS.md and the constitution.",
+      "description": "Evidence-driven instruction drift checker: audits agent memory files for boundary, reality, conflict, and redundancy drift.",
       "author": "RbBtSn0w",
-      "version": "1.4.0",
-      "download_url": "https://github.com/RbBtSn0w/spec-kit-extensions/releases/download/memorylint-v1.4.0/memorylint.zip",
+      "version": "1.5.1",
+      "download_url": "https://github.com/RbBtSn0w/spec-kit-extensions/releases/download/memorylint-v1.5.1/memorylint.zip",
       "repository": "https://github.com/RbBtSn0w/spec-kit-extensions",
       "homepage": "https://github.com/RbBtSn0w/spec-kit-extensions/tree/main/memorylint",
       "documentation": "https://github.com/RbBtSn0w/spec-kit-extensions/blob/main/memorylint/README.md",
@@ -1976,7 +1976,7 @@
         "speckit_version": ">=0.5.1"
       },
       "provides": {
-        "commands": 2,
+        "commands": 3,
         "hooks": 3
       },
       "tags": [
@@ -1990,7 +1990,7 @@
       "downloads": 0,
       "stars": 0,
       "created_at": "2026-04-09T00:00:00Z",
-      "updated_at": "2026-05-24T01:06:49Z"
+      "updated_at": "2026-06-16T00:00:00Z"
     },
     "multi-model-review": {
       "name": "Multi-Model Review",