docs: add hermes-tweet ecosystem entry (#15)

Re-applies the useful content from #10 on top of current main without carrying the stale branch's old ECOSYSTEM.md snapshot. Adds a Native Hermes plugins section with hermes-tweet, a narrow discord.gg markdown-link-check ignore, and a current changelog entry. Supersedes #10. Co-authored-by: kriptoburak <kriptoburak@users.noreply.github.com>

Author: OnlyTerp

.github/markdown-link-check.json

@@ -5,6 +5,7 @@
     { "pattern": "^https://langfuse.yourdomain.com" },
     { "pattern": "^https://hermes.yourdomain.com" },
     { "pattern": "^https://hooks.yourdomain.com" },
+    { "pattern": "^https://discord.gg/" },
     { "pattern": "^http://localhost" },
     { "pattern": "^http://127.0.0.1" }
   ],

CHANGELOG.md

@@ -2,6 +2,12 @@
 
 Dated list of meaningful guide updates. Roughly [Keep a Changelog](https://keepachangelog.com) flavored.
 
+## 2026-05-27 — Ecosystem Directory Update
+
+### Added
+- Hermes Tweet native plugin entry in `ECOSYSTEM.md`, applied onto current
+  `main` without reverting newer MCP / coding-agent ecosystem entries.
+
 ## 2026-05-27 — Part 20 routing schema fixes
 
 ### Fixed

ECOSYSTEM.md

@@ -38,6 +38,14 @@ See [Part 17](./part17-mcp-servers.md) for install patterns and trust model guid
 
 ---
 
+## Native Hermes plugins
+
+- [`hermes-tweet`](https://github.com/Xquik-dev/hermes-tweet) — X/Twitter search, reads, and gated account actions for Hermes Agent through Xquik
+
+See [Part 22](./part22-latest-power-moves.md#4-use-plugins-for-integrations-not-one-off-scripts) for plugin-first integration guidance.
+
+---
+
 ## Coding-agent integrations
 
 - [Claude Code](https://docs.claude.com/en/docs/claude-code) — `claude -p` + ACP; best unattended PR lane with Sonnet 5 / Opus 4.7