Add three MIT community skill entries (agent-reach, ian-xiaohei-illustrations, khazix-skills) (#45)

## Summary

按 ADR-038《市场元数据注册表与两层技能模型》,以 `entry.json` pointer 形式收录三个第三方 community
skill。**仅登记元数据,正文全部留在各自源仓库**,不向 market 仓库 vendoring 任何源码/二进制。

| id | 源仓库 | license | stewardship | redistribution | category |
|----|--------|---------|-------------|----------------|----------|
| `agent-reach` |
[Panniantong/agent-reach](https://github.com/Panniantong/agent-reach) |
MIT | community | allowed | research |
| `ian-xiaohei-illustrations` |
[helloianneo/ian-xiaohei-illustrations](https://github.com/helloianneo/ian-xiaohei-illustrations)
| MIT | community | allowed | media |
| `khazix-skills` |
[KKKKhazix/khazix-skills](https://github.com/KKKKhazix/khazix-skills) |
MIT | community | allowed | productivity |

## Changes

- 新增 `skills/agent-reach/entry.json`(SKILL.md 位于 `agent_reach/skill`,已用
`source.path` 指向)
- 新增 `skills/ian-xiaohei-illustrations/entry.json`(SKILL.md 位于同名子目录,已用
`source.path` 指向)
- 新增 `skills/khazix-skills/entry.json`(多技能合集,指向仓库根)
- 三条 `source.ref` 均固定到源仓库当前 HEAD commit,保证可复现
- `manifest.json`:`stats.totalSkills` 45 → 48,`lastUpdated` 更新为
2026-07-09
- `README.md`:同步计数(external 15→18 / total 45→48)与外部条目列表

## Compliance (ADR-038)

- 三个源仓库均为 MIT,`redistribution: allowed`,可分发
- 未向 market 仓库引入任何 upstream 源码树 / zip / 二进制
- 字段遵循现有 `entry.json` 约定(参照 mattpocock-skills / netease-skills 等既有条目)

README.md

@@ -24,8 +24,8 @@ The market currently contains:
 
 - `1` Agent: `desirecore`
 - `30` local built-in skills with `SKILL.md`
-- `15` external skill entries with `entry.json`
-- `45` publishable skills in total (`SKILL.md` + `entry.json`)
+- `18` external skill entries with `entry.json`
+- `48` publishable skills in total (`SKILL.md` + `entry.json`)
 
 ## Skill Sources
 
@@ -44,10 +44,10 @@ xiaomi-tts, xlsx
 External entries are marketplace pointers to Git/Web/ZIP sources:
 
 ```text
-ai-news-radar, amap-jsapi-skill, dingtalk-api, flyai-skill,
-follow-builders, larksuite-cli, luckin-my-coffee, mattpocock-skills,
-minimax-image-gen, minimax-tts, mt-paotui-for-client, netease-skills,
-taste-skill, wechatpay-skills, wecom-cli
+agent-reach, ai-news-radar, amap-jsapi-skill, dingtalk-api, flyai-skill,
+follow-builders, ian-xiaohei-illustrations, khazix-skills, larksuite-cli,
+luckin-my-coffee, mattpocock-skills, minimax-image-gen, minimax-tts,
+mt-paotui-for-client, netease-skills, taste-skill, wechatpay-skills, wecom-cli
 ```
 
 ## Data Formats

manifest.json

@@ -27,8 +27,8 @@
   },
   "stats": {
     "totalAgents": 1,
-    "totalSkills": 45,
-    "lastUpdated": "2026-07-07"
+    "totalSkills": 48,
+    "lastUpdated": "2026-07-09"
   },
   "features": [
     "curated-index",

skills/agent-reach/entry.json

@@ -0,0 +1,22 @@
+{
+  "id": "agent-reach",
+  "name": "Agent Reach",
+  "category": "research",
+  "tags": ["research", "web-search", "social-media", "twitter", "reddit", "youtube", "bilibili", "xiaohongshu"],
+  "maintainer": {
+    "name": "Panniantong",
+    "verified": false,
+    "account": "Panniantong",
+    "url": "https://github.com/Panniantong/agent-reach"
+  },
+  "stewardship": "community",
+  "license": "MIT",
+  "redistribution": "allowed",
+  "source": {
+    "kind": "git",
+    "repoUrl": "https://github.com/Panniantong/agent-reach.git",
+    "repoBranch": "main",
+    "path": "agent_reach/skill",
+    "ref": "e825f6740d24c6c315c3b0dc41907e6c87ff39a5"
+  }
+}

skills/ian-xiaohei-illustrations/entry.json

@@ -0,0 +1,22 @@
+{
+  "id": "ian-xiaohei-illustrations",
+  "name": "Ian 小黑怪诞正文配图",
+  "category": "media",
+  "tags": ["illustration", "image-generation", "xiaohei", "design"],
+  "maintainer": {
+    "name": "helloianneo",
+    "verified": false,
+    "account": "helloianneo",
+    "url": "https://github.com/helloianneo/ian-xiaohei-illustrations"
+  },
+  "stewardship": "community",
+  "license": "MIT",
+  "redistribution": "allowed",
+  "source": {
+    "kind": "git",
+    "repoUrl": "https://github.com/helloianneo/ian-xiaohei-illustrations.git",
+    "repoBranch": "main",
+    "path": "ian-xiaohei-illustrations",
+    "ref": "91b560849e8f883922cc2fa8a358a668caa94105"
+  }
+}

skills/khazix-skills/entry.json

@@ -0,0 +1,21 @@
+{
+  "id": "khazix-skills",
+  "name": "卡兹克 Skills",
+  "category": "productivity",
+  "tags": ["khazix", "ai-news", "writing", "analysis"],
+  "maintainer": {
+    "name": "KKKKhazix",
+    "verified": false,
+    "account": "KKKKhazix",
+    "url": "https://github.com/KKKKhazix/khazix-skills"
+  },
+  "stewardship": "community",
+  "license": "MIT",
+  "redistribution": "allowed",
+  "source": {
+    "kind": "git",
+    "repoUrl": "https://github.com/KKKKhazix/khazix-skills.git",
+    "repoBranch": "main",
+    "ref": "d4e43c91f16dcd859748c1d71ec7d8aa1ebb4694"
+  }
+}