docs: Add Chrome DevTools Performance Cookbook with MCP integration (#8088)

* docs: add Chrome DevTools Performance Cookbook guide

- Add chrome-devtools-mcp-performance to docs navigation
- Include Chrome DevTools guide in overview with description
- Reorganize cookbook order in overview for better flow

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Co-Authored-By: Continue <[email protected]>

* docs: improve formatting in Chrome DevTools Performance guide

- Convert 'What You've Built' section to proper list format with bullets
- Add left alignment to Performance Issue Quick Reference table
- Enhance readability with bold formatting for key phrases

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* docs: update Chrome DevTools guide with Hub integration and fixes

- Replace JSON config with proper YAML format following Continue Hub schema
- Add pre-built agent workflow using continuedev/chrome-dev-continuous
- Reference official Chrome DevTools MCP at hub.continue.dev/google/chrome-devtools-mcp
- Fix Card icon rendering issue (rocket instead of zap with emoji)
- Update Node.js prerequisite from 18+ to 20+
- Follow PostHog cookbook structure for consistency

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Co-Authored-By: Continue <[email protected]>

* Fix Chrome DevTools guide to remove cn prefix in TUI step

- Updated Step 2 in Quick Start to clarify users are already in TUI mode
- Changed 'From your project directory, run: cn "..."' to 'In the TUI that opens, type: ...'
- This matches the workflow where Step 1 runs 'cn --config' which opens TUI
- Also updated wording in other guides from 'Navigate to' to 'From' for clarity

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* Fix Chrome DevTools GitHub Actions workflow to use cn --config

- Removed invalid 'cn auth login' command
- Updated to use 'cn --config continuedev/chrome-dev-continuous' like dlt cookbook
- Added --auto flag for headless execution
- Fixed line continuation formatting for better readability

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Co-Authored-By: Continue <[email protected]>

---------

Co-authored-by: Continue <[email protected]>

Author: bdougie

docs/docs.json

@@ -264,7 +264,8 @@
               "guides/sanity-mcp-continue-cookbook",
               "guides/snyk-mcp-continue-cookbook",
               "guides/dlt-mcp-continue-cookbook",
-              "guides/netlify-mcp-continuous-deployment"
+              "guides/netlify-mcp-continuous-deployment",
+              "guides/chrome-devtools-mcp-performance"
             ]
           }
         ]