feat: add npx claude-session CLI support

[yazins-ai]

Summary

• Adds bin/claude-session.js CLI entry point so the package can be run via npx claude-session
• Adds bin and files fields to package.json for proper npm packaging
• Auto-builds the frontend on first run if web/dist/ doesn't exist

Publishing to npm

Once merged, publish with:

# 1. Make sure "claude-session" isn't taken (it wasn't at time of PR)
npm view claude-session 2>/dev/null || echo "Name available!"

# 2. Login to npm (one-time)
npm login

# 3. Build the frontend so it ships pre-built
npm run build

# 4. Publish
npm publish

# 5. Users can now run it with:
npx claude-session

If the name claude-session is taken, you can scope it:

// package.json
"name": "@your-scope/claude-session"

Then users run: npx @your-scope/claude-session

Optional: pre-build on publish

Add a prepublishOnly script so the frontend is always built before publish:

"scripts": {
  "prepublishOnly": "vite build web/"
}

Test plan

• npm pack and inspect tarball includes bin/, src/, web/, session-hook.js
• npx . from the repo root starts the server and builds the frontend
• After npm publish, npx claude-session works from any directory

[ibrahimokdadov]

Changes implemented directly in master (30cb880). Closing.