refactor: restructure project layout and add install.mjs

- Move src/ → plugin/ with subdirectories:
  - plugin/core/ (business logic, models, store, permissions, utils, memory)
  - plugin/tools/ (query, resources)
  - plugin/commands/ (placeholder for slash commands)
  - plugin/hooks/ (placeholder for lifecycle hooks)
  - plugin/index.ts (wiring layer only, no business logic)
- Add install.mjs with --install, --uninstall, --openclaw-profile-path
- Add skills/ and docs/ root directories
- Move planning docs (PLAN.md, FEAT.md, AGENT_TASKS.md) to docs/
- Remove old scripts/install.sh
- Update tsconfig rootDir: src → plugin
- Update README.md and README.zh.md with new layout
- Bump version to 0.2.0
- All tests pass

README.md

@@ -24,24 +24,20 @@ Yonexus is an OpenClaw plugin for organization hierarchy and agent identity mana
 
 ```text
 .
-├─ plugin.json
-├─ src/
-│  ├─ index.ts
-│  ├─ models/
-│  ├─ permissions/
-│  ├─ store/
-│  ├─ tools/
-│  ├─ memory/
-│  └─ utils/
-├─ scripts/
-│  ├─ install.sh
-│  └─ demo.ts
-├─ tests/
-│  └─ smoke.ts
-├─ examples/
-│  └─ sample-data.json
-└─ dist/
-   └─ yonexus/
+├─ plugin/
+│  ├─ index.ts          # wiring: init, register commands/hooks/tools
+│  ├─ commands/          # slash commands
+│  ├─ tools/             # query & resource tools
+│  ├─ hooks/             # lifecycle hooks
+│  └─ core/              # business logic, models, store, permissions
+├─ skills/               # skill definitions
+├─ docs/                 # project documentation
+├─ scripts/              # demo & utility scripts
+├─ tests/                # tests
+├─ install.mjs           # install/uninstall script
+├─ plugin.json           # plugin manifest
+├─ README.md
+└─ README.zh.md
 ```
 
 ## Requirements
@@ -54,11 +50,23 @@ Yonexus is an OpenClaw plugin for organization hierarchy and agent identity mana
 ```bash
 npm install
 npm run build
-bash scripts/install.sh
 npm run test:smoke
 npm run demo
 ```
 
+## Install / Uninstall
+
+```bash
+# Install (builds and copies to ~/.openclaw/plugins/yonexus)
+node install.mjs --install
+
+# Install to custom openclaw profile path
+node install.mjs --install --openclaw-profile-path /path/to/.openclaw
+
+# Uninstall
+node install.mjs --uninstall
+```
+
 ## Configuration
 
 `plugin.json` includes default config:
@@ -98,8 +106,6 @@ Data & audit:
 
 ## Testing
 
-Smoke test:
-
 ```bash
 npm run test:smoke
 ```