docs: convert all skill instructions from npm to pnpm

Batch update 62 files across .claude/skills/ — SKILL.md, REMOVE.md,
and script files. Conversions: npm run -> pnpm run, npm install ->
pnpm install, npx -> pnpm exec/dlx, npm uninstall -> pnpm uninstall,
package-lock.json -> pnpm-lock.yaml, shebangs updated.

.claude/skills/x-integration/SKILL.md

@@ -26,7 +26,7 @@ Before using this skill, ensure:
 1. **NanoClaw is installed and running** - WhatsApp connected, service active
 2. **Dependencies installed**:
    ```bash
-   npm ls playwright dotenv-cli || npm install playwright dotenv-cli
+   pnpm ls playwright dotenv-cli || pnpm install playwright dotenv-cli
    ```
 3. **CHROME_PATH configured** in `.env` (if Chrome is not at default location):
    ```bash
@@ -40,7 +40,7 @@ Before using this skill, ensure:
 
 ```bash
 # 1. Setup authentication (interactive)
-npx dotenv -e .env -- npx tsx .claude/skills/x-integration/scripts/setup.ts
+pnpm exec dotenv -e .env -- pnpm exec tsx .claude/skills/x-integration/scripts/setup.ts
 # Verify: data/x-auth.json should exist after successful login
 
 # 2. Rebuild container to include skill
@@ -48,7 +48,7 @@ npx dotenv -e .env -- npx tsx .claude/skills/x-integration/scripts/setup.ts
 # Verify: Output shows "COPY .claude/skills/x-integration/agent.ts"
 
 # 3. Rebuild host and restart service
-npm run build
+pnpm run build
 launchctl kickstart -k gui/$(id -u)/com.nanoclaw  # macOS
 # Linux: systemctl --user restart nanoclaw
 # Verify: launchctl list | grep nanoclaw (macOS) or systemctl --user status nanoclaw (Linux)
@@ -225,7 +225,7 @@ COPY container/agent-runner/package*.json ./
 COPY container/agent-runner/ ./
 ```
 
-Then add COPY line after `COPY container/agent-runner/ ./` and before `RUN npm run build`:
+Then add COPY line after `COPY container/agent-runner/ ./` and before `RUN pnpm run build`:
 ```dockerfile
 # Copy skill MCP tools
 COPY .claude/skills/x-integration/agent.ts ./src/skills/x-integration/
@@ -247,7 +247,7 @@ echo "Chrome not found - update CHROME_PATH in .env"
 ### 2. Run Authentication
 
 ```bash
-npx dotenv -e .env -- npx tsx .claude/skills/x-integration/scripts/setup.ts
+pnpm exec dotenv -e .env -- pnpm exec tsx .claude/skills/x-integration/scripts/setup.ts
 ```
 
 This opens Chrome for manual X login. Session saved to `data/x-browser-profile/`.
@@ -271,7 +271,7 @@ cat data/x-auth.json  # Should show {"authenticated": true, ...}
 ### 4. Restart Service
 
 ```bash
-npm run build
+pnpm run build
 launchctl kickstart -k gui/$(id -u)/com.nanoclaw  # macOS
 # Linux: systemctl --user restart nanoclaw
 ```
@@ -317,26 +317,26 @@ ls -la data/x-browser-profile/ 2>/dev/null | head -5
 ### Re-authenticate (if expired)
 
 ```bash
-npx dotenv -e .env -- npx tsx .claude/skills/x-integration/scripts/setup.ts
+pnpm exec dotenv -e .env -- pnpm exec tsx .claude/skills/x-integration/scripts/setup.ts
 ```
 
 ### Test Post (will actually post)
 
 ```bash
-echo '{"content":"Test tweet - please ignore"}' | npx dotenv -e .env -- npx tsx .claude/skills/x-integration/scripts/post.ts
+echo '{"content":"Test tweet - please ignore"}' | pnpm exec dotenv -e .env -- pnpm exec tsx .claude/skills/x-integration/scripts/post.ts
 ```
 
 ### Test Like
 
 ```bash
-echo '{"tweetUrl":"https://x.com/user/status/123"}' | npx dotenv -e .env -- npx tsx .claude/skills/x-integration/scripts/like.ts
+echo '{"tweetUrl":"https://x.com/user/status/123"}' | pnpm exec dotenv -e .env -- pnpm exec tsx .claude/skills/x-integration/scripts/like.ts
 ```
 
 Or export `CHROME_PATH` manually before running:
 
 ```bash
 export CHROME_PATH="/path/to/chrome"
-echo '{"content":"Test"}' | npx tsx .claude/skills/x-integration/scripts/post.ts
+echo '{"content":"Test"}' | pnpm exec tsx .claude/skills/x-integration/scripts/post.ts
 ```
 
 ## Troubleshooting
@@ -344,7 +344,7 @@ echo '{"content":"Test"}' | npx tsx .claude/skills/x-integration/scripts/post.ts
 ### Authentication Expired
 
 ```bash
-npx dotenv -e .env -- npx tsx .claude/skills/x-integration/scripts/setup.ts
+pnpm exec dotenv -e .env -- pnpm exec tsx .claude/skills/x-integration/scripts/setup.ts
 launchctl kickstart -k gui/$(id -u)/com.nanoclaw  # macOS
 # Linux: systemctl --user restart nanoclaw
 ```

.claude/skills/x-integration/host.ts

@@ -22,7 +22,7 @@ async function runScript(script: string, args: object): Promise<SkillResult> {
   const scriptPath = path.join(process.cwd(), '.claude', 'skills', 'x-integration', 'scripts', `${script}.ts`);
 
   return new Promise((resolve) => {
-    const proc = spawn('npx', ['tsx', scriptPath], {
+    const proc = spawn('pnpm', ['exec', 'tsx', scriptPath], {
       cwd: process.cwd(),
       env: { ...process.env, NANOCLAW_ROOT: process.cwd() },
       stdio: ['pipe', 'pipe', 'pipe']

.claude/skills/x-integration/scripts/like.ts

@@ -1,7 +1,7 @@
-#!/usr/bin/env npx tsx
+#!/usr/bin/env pnpm exec tsx
 /**
  * X Integration - Like Tweet
- * Usage: echo '{"tweetUrl":"https://x.com/user/status/123"}' | npx tsx like.ts
+ * Usage: echo '{"tweetUrl":"https://x.com/user/status/123"}' | pnpm exec tsx like.ts
  */
 
 import { getBrowserContext, navigateToTweet, runScript, config, ScriptResult } from '../lib/browser.js';

.claude/skills/x-integration/scripts/post.ts

@@ -1,7 +1,7 @@
-#!/usr/bin/env npx tsx
+#!/usr/bin/env pnpm exec tsx
 /**
  * X Integration - Post Tweet
- * Usage: echo '{"content":"Hello world"}' | npx tsx post.ts
+ * Usage: echo '{"content":"Hello world"}' | pnpm exec tsx post.ts
  */
 
 import { getBrowserContext, runScript, validateContent, config, ScriptResult } from '../lib/browser.js';

.claude/skills/x-integration/scripts/quote.ts

@@ -1,7 +1,7 @@
-#!/usr/bin/env npx tsx
+#!/usr/bin/env pnpm exec tsx
 /**
  * X Integration - Quote Tweet
- * Usage: echo '{"tweetUrl":"https://x.com/user/status/123","comment":"My thoughts"}' | npx tsx quote.ts
+ * Usage: echo '{"tweetUrl":"https://x.com/user/status/123","comment":"My thoughts"}' | pnpm exec tsx quote.ts
  */
 
 import { getBrowserContext, navigateToTweet, runScript, validateContent, config, ScriptResult } from '../lib/browser.js';

.claude/skills/x-integration/scripts/reply.ts

@@ -1,7 +1,7 @@
-#!/usr/bin/env npx tsx
+#!/usr/bin/env pnpm exec tsx
 /**
  * X Integration - Reply to Tweet
- * Usage: echo '{"tweetUrl":"https://x.com/user/status/123","content":"Great post!"}' | npx tsx reply.ts
+ * Usage: echo '{"tweetUrl":"https://x.com/user/status/123","content":"Great post!"}' | pnpm exec tsx reply.ts
  */
 
 import { getBrowserContext, navigateToTweet, runScript, validateContent, config, ScriptResult } from '../lib/browser.js';

.claude/skills/x-integration/scripts/retweet.ts

@@ -1,7 +1,7 @@
-#!/usr/bin/env npx tsx
+#!/usr/bin/env pnpm exec tsx
 /**
  * X Integration - Retweet
- * Usage: echo '{"tweetUrl":"https://x.com/user/status/123"}' | npx tsx retweet.ts
+ * Usage: echo '{"tweetUrl":"https://x.com/user/status/123"}' | pnpm exec tsx retweet.ts
  */
 
 import { getBrowserContext, navigateToTweet, runScript, config, ScriptResult } from '../lib/browser.js';

.claude/skills/x-integration/scripts/setup.ts

@@ -1,7 +1,7 @@
-#!/usr/bin/env npx tsx
+#!/usr/bin/env pnpm exec tsx
 /**
  * X Integration - Authentication Setup
- * Usage: npx tsx setup.ts
+ * Usage: pnpm exec tsx setup.ts
  *
  * Interactive script - opens browser for manual login
  */