docs: improve database instance documentation clarity and structure

[d-bytebase]

Summary

• Consolidated connection guidelines into a single, cleaner "Database Connectivity" section
• Removed redundant screenshot images that weren't adding value
• Improved clarity and readability of connection instructions

Changes

• Structure improvement: Combined separate connection sections into one unified list under "Database Connectivity"
• Content simplification: Shortened verbose connection instructions while maintaining clarity
  • Docker standard mode: Use host.docker.internal
  • Docker with --network host: Use 127.0.0.1
  • Bytebase Cloud: Whitelist required IPs
• Image cleanup: Removed connect-local-docker.webp and connect-local-no-docker.webp screenshots

Test plan

• Verified all internal links still work
• Confirmed Docker connection instructions are accurate
• Checked Cloud prerequisites link is valid

🤖 Generated with Claude Code

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Project	Deployment	Preview	Comments	Updated (UTC)
bytebase-com	✅ Ready	Preview	Comment	Aug 13, 2025 4:28pm

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📝 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