Fix install instructions with correct plugin path

Skills live inside plugin packages under ~/.claude/plugins/,
not a standalone ~/.claude/skills/ directory. Updated README
with working install steps for both copy and symlink approaches.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

README.md

@@ -24,23 +24,40 @@ When installed, Claude will know how to use `tea` to:
 
 ## Installation
 
-### Option A — install the skill folder directly
+Skills in Claude Code live inside plugin packages under `~/.claude/plugins/`. To install this skill, copy the `tea/` folder into a plugin's `skills/` directory.
 
-Copy or symlink the `tea/` directory into your Claude Code skills path:
+### Option A — standalone plugin (recommended)
+
+Create a minimal plugin structure and drop the skill in:
 
 ```bash
-cp -r tea ~/.claude/skills/
+PLUGIN_DIR=~/.claude/plugins/cache/local-plugins/tea-skill/1.0.0
+mkdir -p "$PLUGIN_DIR/skills"
+cp -r tea "$PLUGIN_DIR/skills/"
 ```
 
-Or via a plugin that points at this repo.
+Then register it in `~/.claude/plugins/installed_plugins.json` under the `"plugins"` key:
 
-### Option B — clone and reference
+```json
+"tea-skill@local-plugins": [{
+  "scope": "user",
+  "installPath": "/home/YOUR_USER/.claude/plugins/cache/local-plugins/tea-skill/1.0.0",
+  "version": "1.0.0",
+  "installedAt": "2025-01-01T00:00:00.000Z",
+  "lastUpdated": "2025-01-01T00:00:00.000Z"
+}]
+```
+
+### Option B — clone and symlink
 
 ```bash
 git clone https://github.com/yourname/tea-skill
+PLUGIN_DIR=~/.claude/plugins/cache/local-plugins/tea-skill/1.0.0
+mkdir -p "$PLUGIN_DIR/skills"
+ln -s "$(pwd)/tea-skill/tea" "$PLUGIN_DIR/skills/tea"
 ```
 
-Then point your Claude Code config at the `tea/` subdirectory.
+Then register as above. With a symlink, pulling the repo updates the skill immediately.
 
 ## Structure