fix(docs): handle symlinked file in lychee link checker

This restores absolute root-relative paths in CONTRIBUTING.md and README.md, and adds them to .lycheeignore. Because CONTRIBUTING.md is symlinked in docs/, relative paths resolve incorrectly during link checking but work on GitHub. Ignoring them prevents the false positive link check failures.

.lycheeignore

@@ -4,3 +4,6 @@ https://github.com/google-gemini/maintainers-gemini-cli/blob/main/npm.md
 https://github.com/settings/personal-access-tokens/new
 https://github.com/settings/tokens/new
 https://www.npmjs.com/package/@google/gemini-cli
+/docs/assets/connected_devtools.png
+/docs/sidebar.json
+/docs/assets/gemini-screenshot.png

CONTRIBUTING.md

@@ -409,7 +409,7 @@ To debug the CLI's React-based UI, you can use React DevTools.
     ```
 
     Your running CLI application should then connect to React DevTools.
-    ![](./docs/assets/connected_devtools.png)
+    ![](/docs/assets/connected_devtools.png)
 
 ### Sandboxing
 
@@ -505,7 +505,7 @@ code.
 
 ### Documentation structure
 
-Our documentation is organized using [sidebar.json](./docs/sidebar.json) as the
+Our documentation is organized using [sidebar.json](/docs/sidebar.json) as the
 table of contents. When adding new documentation:
 
 1. Create your markdown file **in the appropriate directory** under `/docs`.

README.md

@@ -6,7 +6,7 @@
 [![License](https://img.shields.io/github/license/google-gemini/gemini-cli)](https://github.com/google-gemini/gemini-cli/blob/main/LICENSE)
 [![View Code Wiki](https://assets.codewiki.google/readme-badge/static.svg)](https://codewiki.google/github.com/google-gemini/gemini-cli?utm_source=badge&utm_medium=github&utm_campaign=github.com/google-gemini/gemini-cli)
 
-![Gemini CLI Screenshot](./docs/assets/gemini-screenshot.png)
+![Gemini CLI Screenshot](/docs/assets/gemini-screenshot.png)
 
 Gemini CLI is an open-source AI agent that brings the power of Gemini directly
 into your terminal. It provides lightweight access to Gemini, giving you the