fix(github-orchestration): Detect Cloudflare dashboard URLs and filter Supabase ignored comments

[sylvansys]

Summary

• Add dash.cloudflare.com URL extraction to extractCloudflarePreviewUrls() so Cloudflare bot comments with dashboard log links are detected
• Fix .workers.dev/.pages.dev regex to support multi-subdomain URLs (e.g. abc123.my-project.pages.dev)
• Filter out Supabase bot "ignored" comments in extractSupabasePreviewBranches() to prevent showing the main project ref as a preview branch when no preview was created

Fixes #338

Test plan

• TypeScript typecheck passes (bun run typecheck)
• All 13 existing tests pass (bun test)
• Manual verification against PR Redesign plugin READMEs to modern standards with badges and validation #73 (constellos/constellos): Cloudflare bot comment should produce a dash.cloudflare.com URL
• Manual verification against PR Redesign plugin READMEs to modern standards with badges and validation #73: Supabase "ignored" comment should produce no entries
• Manual verification against PR Fix Stop Hook Blocking Behavior #69: Supabase preview branch comment should still extract the ref correctly

🤖 Generated with Claude Code

[constellos]

Constellos Review - PR feedback from your reviewer agents.

Requirements: ❌ 0 • ❌ 0 • ⏭️ 0

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Code Quality: ✅ 4 • ❌ 0 • ⏭️ 0

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Check	Status	Reasoning
undefined	✅	The ci-status.ts file effectively consolidates shared CI utilities into reusable functions. Functions like fetchPRCommentBodies(), extractPreviewUrls(), and execCommand() are well-factored to avoid duplication across multiple hook implementations.
undefined	✅	All functionality in ci-status.ts directly supports documented use cases (commit-task-await-ci-status, await-pr-status, commit-session-await-ci-status hooks). Features like fail-fast CI checking, preview URL extraction, and merge conflict detection solve real problems without speculative additions.
undefined	✅	Code demonstrates excellent separation of concerns with clear single-responsibility functions (e.g., checkPRExists, waitForCIChecks, extractPreviewUrls). Each function has a focused purpose, comprehensive JSDoc documentation, and well-defined interfaces. The module exports cohesive utilities for CI/PR operations.
undefined	✅	Code is highly maintainable with extensive JSDoc comments, clear TypeScript interfaces, descriptive function/variable names, and consistent error handling patterns. The file includes helpful examples in documentation and uses semantic constants (MAX_OUTPUT_CHARS, DEFAULT_TIMEOUT_MS) for magic numbers.