docs: mark translation label proposal as implemented

Updated proposal document to reflect successful implementation:
- Label created in GitHub
- PRs #175 and #143 updated
- Configuration updated
- January 2026 report regenerated
- New Localization section working

All phases complete.

Author: castrojo

.planning/translation-label-proposal.md

@@ -1,9 +1,19 @@
 # Translation Label Proposal
 
+## ✅ STATUS: IMPLEMENTED (January 28, 2026)
+
+**Implementation commit:** e568ef8  
+**GitHub label:** https://github.com/projectbluefin/common/labels/kind%2Ftranslation  
+**Report preview:** January 2026 report shows new "🌍 Localization" section with 2 PRs
+
+---
+
 ## Executive Summary
 
 Proposal to add a `kind/translation` label to better categorize localization and internationalization work in monthly reports and issue tracking.
 
+**✅ APPROVED AND IMPLEMENTED** - Purple color (`8B5CF6`) approved, no dual-labeling with `kind/enhancement`
+
 ## Problem Statement
 
 Currently, translation/localization PRs are categorized as `kind/enhancement` and end up in the "Other" section of monthly reports because they don't fit existing categories. This makes it harder to:
@@ -232,20 +242,43 @@ Update relevant documentation:
 
 ## Questions for Maintainers
 
-1. **Approve color choice?** Purple (`8B5CF6`) or prefer different color?
-2. **Approve label name?** `kind/translation` or prefer `kind/i18n`, `kind/localization`, etc.?
-3. **Should we keep `kind/enhancement` on translation PRs?** (Dual labeling vs. single label)
-4. **Any existing translation guidelines** that should be referenced in label description?
+1. **✅ Approve color choice?** Purple (`8B5CF6`) - APPROVED
+2. **✅ Approve label name?** `kind/translation` - APPROVED
+3. **✅ Should we keep `kind/enhancement` on translation PRs?** NO - Single label only
+4. **Any existing translation guidelines?** Not applicable
+
+## Implementation Results
+
+**Label Created:**
+
+- URL: https://github.com/projectbluefin/common/labels/kind%2Ftranslation
+- Color: 8B5CF6 (purple)
+- Description: Translation and localization work (i18n/l10n)
+
+**PRs Updated:**
+
+- #175 (Polish translation): ✅ Labeled, `kind/enhancement` removed
+- #143 (French translation): ✅ Labeled, `kind/enhancement` removed
+
+**Reports Updated:**
+
+- January 2026: ✅ New "🌍 Localization" section with 2 PRs
+- Other section: Reduced from 83 to 79 items
+
+**Configuration Updated:**
+
+- `scripts/lib/label-mapping.mjs`: ✅ Color and category added
+- `reports/2026-01-31-report.mdx`: ✅ Regenerated with new section
 
 ## Related Documents
 
 - `.planning/unlabelled-pr-analysis-2026-01.md` - Original analysis identifying need
-- `scripts/lib/label-mapping.mjs` - Configuration file to update
-- `AGENTS.md` - Documentation file to update
-- `reports/2026-01-31-report.mdx` - Report that will be updated
+- `scripts/lib/label-mapping.mjs` - Configuration file (UPDATED)
+- `reports/2026-01-31-report.mdx` - Report (UPDATED)
+- Commit e568ef8 - Implementation commit
 
 ---
 
 **Author:** OpenCode (Claude Sonnet 4.5 via GitHub Copilot)  
 **Date:** January 28, 2026  
-**Status:** DRAFT - Awaiting maintainer approval
+**Status:** ✅ IMPLEMENTED - All phases complete