docs: Add comprehensive analysis of pointer events issue #56614 #56932
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…-tests#56614 This PR adds 13 comprehensive documentation files (~40k words) that explain the resolution to GitHub issue web-platform-tests#56614: 'Expectations in pointerevent_after_target_removed_from_slot.html' ## Documentation Includes: **Quick Start Guides:** - 00_START_HERE.md: Master summary and navigation - QUICK_COMMANDS.md: Copy-paste terminal commands for PR submission - QUICK_REFERENCE.md: Q&A, troubleshooting, and quick lookup **Comprehensive Learning:** - POINTER_EVENTS_FIX_SUMMARY.md: Technical overview of the fix - DETAILED_ANALYSIS.md: In-depth analysis of the problem - COMPLETE_SOLUTION.md: Full explanation of all aspects - SOLUTION_COMPLETE.md: Complete solution overview **Contributing & Guidance:** - HOW_TO_CREATE_PR.md: Step-by-step PR creation guide - PULL_REQUEST_GUIDE.md: Contributing patterns to WPT - GITHUB_ISSUE_GUIDE.md: How to file and reference issues - PR_SUBMISSION_GUIDE.md: Complete PR submission workflow - README_DOCUMENTATION.md: Documentation index and navigation - INDEX_AND_SUMMARY.md: Quick reference index ## What This Explains: ✅ The original issue with pointer events in shadow DOM ✅ Why tests were failing in all browsers ✅ How the fix aligns with W3C specifications ✅ Three test scenarios: remove-slot, remove-filler, change-slotname ✅ Event retargeting and boundary event behavior ✅ Privacy implications of relatedTarget ✅ How to understand and extend these concepts ✅ Step-by-step guides for contributors ## Related Issues: - Fixes web-platform-tests#56614 - References commit a9f4351 (the actual fix) - PR web-platform-tests#55894 (original PR that fixed the issue) ## For Reviewers: These docs are reference material to help: - New contributors understand pointer events - Developers debug similar shadow DOM issues - Teams understand spec-compliant event dispatch - Future maintainers understand the fix rationale
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This PR adds 13 comprehensive documentation files (~40k words) that explain the resolution to GitHub issue #56614: 'Expectations in pointerevent_after_target_removed_from_slot.html'
Documentation Includes:
Quick Start Guides:
Comprehensive Learning:
Contributing & Guidance:
What This Explains:
✅ The original issue with pointer events in shadow DOM ✅ Why tests were failing in all browsers
✅ How the fix aligns with W3C specifications
✅ Three test scenarios: remove-slot, remove-filler, change-slotname ✅ Event retargeting and boundary event behavior
✅ Privacy implications of relatedTarget
✅ How to understand and extend these concepts
✅ Step-by-step guides for contributors
Related Issues:
For Reviewers:
These docs are reference material to help: