Clean up instance connection documentation

[d-bytebase]

Summary

• Removed 6 outdated screenshot images that were cluttering the documentation
• Simplified the document structure by removing unnecessary section nesting
• Improved clarity and conciseness of setup instructions

Changes

• Removed image references and corresponding webp files for:
  • Read-only connection configuration
  • SSH tunnel architecture and setup
  • External secret manager flow
  • Vault secret creation and authentication
• Consolidated "Advanced Options" and "Security Features" sections into main level headings
• Rewrote descriptions to explain when to use each feature
• Simplified setup instructions for better readability

Test plan

• Preview the updated documentation page
• Verify all remaining links work correctly
• Confirm the page renders properly without the removed images

🤖 Generated with Claude Code

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Preview	Comments	Updated (UTC)
bytebase-com	Ready	Preview	Comment	Aug 20, 2025 2:46am

[Copilot]

Pull Request Overview

This PR cleans up instance connection documentation by removing outdated visual elements and improving text clarity. The changes focus on making the documentation more concise and easier to navigate by eliminating image dependencies and simplifying section structure.

• Removed 6 outdated screenshot images (webp files) and their references
• Flattened section hierarchy by promoting subsections to main-level headings
• Improved instructional text with clearer explanations of when and why to use features

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}

[github-actions]

📝 Broken Links Check Report

Note: Entries under /api-reference/ are likely false positives and can be ignored.

The following is the output from the broken links check:

found 16 broken links in 9 files

integrations/api/audit-log.mdx
 ⎿  /api-reference/auditlogservice/post-v1auditlogs:search

integrations/api/authentication.mdx
 ⎿  /api-reference/authservice/post-v1authlogin

integrations/api/data-classification.mdx
 ⎿  /api-reference/settingservice/patch-v1settings
 ⎿  /api-reference/databaseservice/patch-v1instances-databases

integrations/api/issue.mdx
 ⎿  /api-reference/issueservice/post-v1projects-issues

integrations/api/permission.mdx
 ⎿  /api-reference/workspaceservice/get-v1workspaces-:getIamPolicy
 ⎿  /api-reference/projectservice/get-v1projects-:getIamPolicy
 ⎿  /api-reference/roleservice/get-v1roles
 ⎿  /api-reference/userservice/get-v1users
 ⎿  /api-reference/groupservice/get-v1groups

integrations/api/plan.mdx
 ⎿  /api-reference/planservice/post-v1projects-plans
 ⎿  /api-reference/sheetservice/post-v1projects-sheets

integrations/api/release.mdx
 ⎿  /api-reference/releaseservice/post-v1projects-releases

integrations/api/rollout.mdx
 ⎿  /api-reference/rolloutservice/post-v1projects-rollouts

integrations/api/sql-review.mdx
 ⎿  /api-reference/releaseservice/post-v1projects-releases:check
 ⎿  /api-reference/sqlservice/post-v1sqlcheck

[tianzhou]

LGTM