docs: add ESLint implementation summary and overview

Co-authored-by: kraenhansen <1243959+kraenhansen@users.noreply.github.com>

Author: Copilot

ESLINT_README.md

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+# ESLint Rules Enhancement - Summary
+
+This directory contains a comprehensive analysis and actionable plan for enhancing ESLint rules in the react-native-node-api repository.
+
+## 📚 Documents Overview
+
+### [ESLINT_RECOMMENDATIONS.md](./ESLINT_RECOMMENDATIONS.md)
+**The Analysis Document** - Deep dive into patterns and recommendations
+
+- Current state assessment (config, metrics, existing errors)
+- 9 exciting patterns identified in the codebase
+- 20 ESLint rules recommended with full rationale
+- Priority ranking (High/Medium/Low)
+- 4-phase implementation strategy
+- Package dependencies needed
+- Success metrics and KPIs
+
+**Use this to**: Understand the "why" behind each recommendation
+
+### [ESLINT_PR_PROPOSALS.md](./ESLINT_PR_PROPOSALS.md)
+**The Action Plan** - 10 ready-to-implement PR proposals
+
+- PR #1-10 with complete specifications
+- Copy-paste ready ESLint configurations
+- Package installation commands
+- Migration paths for each rule
+- Testing strategies
+- Before/after examples
+- Implementation timeline
+
+**Use this to**: Create individual PRs for each rule category
+
+### [ESLINT_QUICKSTART.md](./ESLINT_QUICKSTART.md)
+**The Quick Start Guide** - Get started in minutes
+
+- 3 quick implementation options
+- Configuration templates
+- Common commands reference
+- Troubleshooting guide
+- 5-minute quick wins script
+- Success measurement tools
+
+**Use this to**: Get immediate wins with minimal effort
+
+## 🎯 Quick Start (Choose One)
+
+### Option A: Read Everything (30 minutes)
+1. Read ESLINT_RECOMMENDATIONS.md for context
+2. Review ESLINT_PR_PROPOSALS.md for implementation details
+3. Use ESLINT_QUICKSTART.md as reference
+
+### Option B: Quick Implementation (5 minutes)
+1. Jump to ESLINT_QUICKSTART.md
+2. Run the "Quick Wins" commands
+3. Commit zero-impact rules immediately
+
+### Option C: Pick Your PR (15 minutes)
+1. Browse ESLINT_PR_PROPOSALS.md quick reference table
+2. Choose a PR that interests you
+3. Follow the step-by-step guide for that PR
+
+## 🌟 Highlights
+
+### Exciting Patterns Found
+- ✅ Custom `UsageError` class with fix suggestions
+- ✅ Heavy use of `node:assert/strict` for invariants
+- ✅ Only 2 eslint-disable comments in entire codebase
+- ✅ Already follows `node:` protocol imports
+- ✅ Clean separation between CLI and library code
+
+### Top Priority Rules (Quick Wins)
+1. **consistent-type-imports** - Auto-fixable, big impact
+2. **Security rules** - Zero violations expected, easy add
+3. **no-console with CLI exceptions** - Codifies existing pattern
+4. **import/order** - Auto-fixable, improves readability
+5. **prefer-node-protocol** - Already followed, zero violations
+
+### Impact Summary
+- **Current lint errors**: ~700 (mostly no-unsafe-* rules)
+- **Recommended rules**: 20 across 10 PRs
+- **Auto-fixable**: 50%+ of new rules
+- **Breaking changes**: None
+- **Package additions**: 6 optional plugins
+
+## 📊 By the Numbers
+
+| Metric | Value |
+|--------|-------|
+| TypeScript files analyzed | ~75 |
+| Lines of TypeScript code | ~13,440 |
+| Test files | 12+ |
+| Current lint errors | ~700 |
+| eslint-disable instances | 2 |
+| TODO comments | ~20 |
+| Recommended rules | 20 |
+| Proposed PRs | 10 |
+| New packages suggested | 6 |
+
+## 🚀 Implementation Paths
+
+### Path 1: Comprehensive (4 weeks)
+Week 1: High priority rules (security, type imports, console)
+Week 2: Medium priority (imports, Node.js practices)
+Week 3: Medium priority continued (return types)
+Week 4+: Low priority (docs, comments, tests)
+
+### Path 2: Quick Wins (1 day)
+- Enable security baseline rules
+- Auto-fix type imports
+- Add modern JS rules
+- Commit and move on
+
+### Path 3: Custom Selection
+Pick specific rules from proposals based on team priorities
+
+## 🎓 For Reviewers
+
+When reviewing these recommendations:
+
+1. **Check the pattern analysis** - Do the identified patterns match your understanding?
+2. **Evaluate priorities** - Do you agree with High/Medium/Low classifications?
+3. **Consider team capacity** - Choose an implementation path that fits
+4. **Review rule configurations** - Tweak strictness levels as needed
+5. **Think gradual adoption** - Start with "warn", upgrade to "error"
+
+## 🔧 For Implementers
+
+When implementing PRs:
+
+1. **Test thoroughly** - Run lint, build, and test suite after each rule
+2. **Commit frequently** - One PR per rule category
+3. **Use auto-fix** - Let ESLint do the work where possible
+4. **Document decisions** - Update these docs with learnings
+5. **Measure impact** - Track error counts before/after
+
+## 📝 Maintenance
+
+Keep these documents updated:
+
+- **After implementing a PR**: Mark it complete, note any deviations
+- **After team feedback**: Adjust priorities or configurations
+- **After finding new patterns**: Add to recommendations
+- **Quarterly**: Review and refresh based on new ESLint features
+
+## 🤝 Contributing
+
+To add new rule recommendations:
+
+1. Identify the pattern in codebase
+2. Research appropriate ESLint rule
+3. Add to ESLINT_RECOMMENDATIONS.md with rationale
+4. Create PR proposal in ESLINT_PR_PROPOSALS.md
+5. Add quick-start commands to ESLINT_QUICKSTART.md if applicable
+
+## 📞 Questions?
+
+If you have questions about:
+- **Specific rules**: See ESLINT_RECOMMENDATIONS.md
+- **Implementation**: See ESLINT_PR_PROPOSALS.md  
+- **Getting started**: See ESLINT_QUICKSTART.md
+- **Everything**: Start with ESLINT_RECOMMENDATIONS.md
+
+## ✅ Checklist for This Work
+
+- [x] Analyze current ESLint configuration
+- [x] Identify patterns in codebase
+- [x] Document exciting patterns found
+- [x] Research appropriate ESLint rules
+- [x] Prioritize rules (High/Medium/Low)
+- [x] Create 10 actionable PR proposals
+- [x] Write implementation guides
+- [x] Provide quick-start templates
+- [x] Document success metrics
+- [x] Create this summary README
+
+## 🎉 Ready to Start!
+
+Pick your path and dive in. All three documents are production-ready and provide complete guidance.
+
+---
+
+**Generated**: December 2025
+**Status**: Ready for review and implementation
+**Estimated effort**: 5 minutes (quick wins) to 4 weeks (comprehensive)