Fix bird CLI link: steipete/bird, not ryo-ma/bird

Also add install command and cookie auth note to SKILL.md.

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

README.md

@@ -7,7 +7,7 @@ Stop losing insights in your bookmark graveyard. This slash command fetches your
 ## Prerequisites
 
 - **[Claude Code](https://docs.anthropic.com/en/docs/claude-code)** - Anthropic's CLI for Claude
-- **[bird CLI](https://github.com/ryo-ma/bird)** - Twitter/X API client (must be authenticated)
+- **[bird CLI](https://github.com/steipete/bird)** - Twitter/X API client (`npm install -g @steipete/bird`)
 - **Exa MCP Server** *(optional)* - Only needed for `--depth deep` web research mode
 
 ## Installation

skills/x-bookmark-research/SKILL.md

@@ -22,9 +22,10 @@ When you bookmark interesting tweets, this skill processes them into organized m
 
 ### Required
 
-- **[bird CLI](https://github.com/ryo-ma/bird)** - Command-line tool for Twitter/X API access
+- **[bird CLI](https://github.com/steipete/bird)** - Command-line tool for Twitter/X API access
+  - Install: `npm install -g @steipete/bird`
+  - Uses cookie authentication from your browser (Safari/Chrome/Firefox)
   - Used to fetch bookmarks, read tweets, and look up author profiles
-  - Must be authenticated before first use (`bird auth`)
 
 ### Optional