Add CI failure analysis and PR splitting strategy documentation

Documentation-only changes extracted from PR #2069.
Zero code changes - provides valuable documentation for handling
CI failures and splitting large PRs.

Includes:
1. CI failure analysis for PR #2069
2. Testing requirements (tested vs untested fixes)
3. PR splitting strategy guide
4. Analysis index with navigation

All changes rebased on latest master.

Related: PR #2069, supersedes PR #2101

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: justin808

.claude/docs/analysis/CI_FAILURES_2024-11-21.md

@@ -1,6 +1,6 @@
 # CI Failure Analysis - Branch justin808/monorepo-completion
 
-**Date**: 2024-11-21
+**Date**: 2025-11-21
 **PR**: #2069
 **Analyst**: Claude Code Review
 **Status**: 🔴 NOT READY TO MERGE - Multiple Test Failures

.claude/docs/analysis/INDEX.md

@@ -226,7 +226,7 @@ Outside this analysis directory:
 
 ## Contact & Updates
 
-These documents were generated on: 2025-11-19
+These documents were generated on: 2025-11-22
 
 Updates to analysis:
 
@@ -271,6 +271,6 @@ Updates to analysis:
 
 ---
 
-Last Updated: 2025-11-21
+Last Updated: 2025-11-22
 Status: Phase 5 IN PROGRESS - CI Failures Must Be Fixed Before Merge
 **BLOCKER**: See CI_FAILURES_2024-11-21.md for complete failure analysis

CLAUDE.md

@@ -55,6 +55,10 @@ These requirements are non-negotiable. CI will fail if not followed.
    - Note in PR descriptions which fixes were tested locally vs. which are hypothetical
    - Explain any testing limitations encountered
 
+**See also**: When facing complex PRs with multiple CI failures, refer to `.claude/docs/pr-splitting-strategy.md` for guidance on splitting large PRs into smaller, more manageable pieces.
+
+---
+
 **🚀 AUTOMATIC: Git hooks are installed automatically during setup**
 
 Git hooks will automatically run linting on **all changed files (staged + unstaged + untracked)** before each commit - making it fast while preventing CI failures!