feat: add Search Console connection guide

[siisee11]

Summary

• add shared Google Search Console connection guide in English and Korean
• include masked browser-harness screenshots for property, OAuth scope, and token-copy steps
• refresh provider catalog guidance for dashboard OAuth and CLI/JSON token flows

Verification

• bun --cwd packages/ui typecheck
• bun --cwd packages/db typecheck
• bunx oxfmt --check packages/db/src/source-providers.ts packages/db/src/connection-guide.ts packages/ui/src/data-sources/connection-guides/google-search-console.ts packages/ui/src/data-sources/connection-guides/index.ts packages/ui/src/data-sources/connection-guides/types.ts

[cloudflare-workers-and-pages]

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Status	Name	Latest Commit	Preview URL	Updated (UTC)
✅ Deployment successful! View logs	onequery-landing	584a7ce	Commit Preview URL Branch Preview URL	Jun 24 2026, 02:54 PM