chore(integrations): address review — Zapier LICENSE, docs, tidy job names

- Add MIT LICENSE to zapier-mem0 (package.json declared MIT but shipped no
  file; every peer commits one) + keywords/author/homepage for parity.
- Document the n8n and Zapier checks workflows in the AGENTS.md CI table.
- Title-case the ci-gate job display names (n8n Node, Zapier App) to match
  the other integration jobs.

integrations/zapier-mem0/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 Mem0
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

integrations/zapier-mem0/package.json

@@ -2,6 +2,18 @@
   "name": "zapier-mem0",
   "version": "0.1.0",
   "description": "Zapier integration for Mem0 — the memory layer for AI agents.",
+  "keywords": [
+    "zapier",
+    "mem0",
+    "memory",
+    "ai",
+    "agents"
+  ],
+  "homepage": "https://mem0.ai",
+  "author": {
+    "name": "Mem0",
+    "email": "founders@mem0.ai"
+  },
   "repository": {
     "type": "git",
     "url": "https://github.com/mem0ai/mem0",