docs: Update cookbook guides to use agents

[BekahHW]

This PR updates all cookbook guides to use the new agent format:

Changes Made

GitHub Issues and PRs Cookbook

• Changed config command to cn --agent continuedev/github-project-manager-agent
• Updated link to point to new agent: https://hub.continue.dev/continuedev/github-project-manager-agent
• Removed TUI/headless mode duplicated prompts
• Added info callout for headless mode usage

PostHog Cookbook

• Changed to cn --agent continuedev/posthog-continuous-ai-agent
• Updated agent link accordingly

Netlify Cookbook

• Added cn --agent continuedev/netlify-continuous-ai-agent as alternative
• Updated link to new agent
• Removed specific optimization prompts

Chrome DevTools Cookbook

• Changed to cn --agent continuedev/chrome-dev-tools-agent
• Updated agent link

Sanity Cookbook

• Changed to cn --agent continuedev/sanity-assistant-agent
• Updated link and removed duplicate prompts
• Added single info callout for headless mode

Sentry Cookbook

• Changed to cn --agent continuedev/sentry-continuous-ai-agent
• Updated link and added info callout

Snyk Cookbook

• Changed to cn --agent continuedev/snyk-continuous-ai-agent
• Updated config links

Supabase Cookbook

• Changed to cn --agent continuedev/supabase-agent
• Updated links accordingly

dlt Cookbook

• Changed to cn --agent continuedev/dlt-agent
• Updated all references

Format Changes

• Replaced separate TUI/Headless prompts with single prompts
• Added consistent info callouts: "To run prompts in headless mode, use cn -p 'prompt'"
• Standardized on cn --agent format throughout
• Updated all agent URLs to point to correct Continue Hub locations

All changes maintain backward compatibility while directing users to the new agent-based workflow.

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Summary by cubic

Update all cookbook guides to use agent-based workflows with cn --agent and aligned links, prompts, and CI examples for consistency. Improves quick start and headless usage; remains backward compatible.

• Refactors
  • Replaced cn --config with cn --agent across all guides and updated Continue Hub links.
  • Consolidated TUI/headless prompts into a single prompt and added a standard headless callout (cn -p "prompt").
  • Standardized CI examples to use agents; removed obsolete Netlify optimization prompts.
  • Switched to new agents for GitHub, PostHog, Netlify, Chrome DevTools, Sanity, Sentry, Snyk, Supabase, and dlt.

[github-actions]

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[github-actions]

✅ Review Complete

Code Review Summary

⚠️ Continue API authentication failed. Please check your CONTINUE_API_KEY.

---

[cubic-dev-ai]

1 issue found across 9 files

Prompt for AI agents (all 1 issues)

Understand the root cause of the following 1 issues and fix them.


<file name="docs/guides/dlt-mcp-continue-cookbook.mdx">

<violation number="1" location="docs/guides/dlt-mcp-continue-cookbook.mdx:88">
The manual setup flow should still point to the dlt MCP listing; installing the dlt Agent listing into a newly created agent isn&#39;t possible and leaves users without the MCP tools they need.</violation>
</file>

_{React with 👍 or 👎 to teach cubic. Mention @cubic-dev-ai to give feedback, ask questions, or re-run the review.}