diff --git a/CLAUDE.md b/CLAUDE.md
index e85b524..c282c3f 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -910,6 +910,115 @@ Everything from v1.1.5 plus:
 
 ---
 
+### v1.1.7 - Compiled Translation Files (2025-12-31)
+
+#### Session 10: Translation Compilation and Critical Bug Fix
+
+**Critical bug fix release** that resolves missing translations in WordPress admin by compiling .mo files.
+
+**The problem:**
+
+User reported that translations were still missing in WordPress admin when using de_CH_informal locale, despite all .po files being 100% complete with 56/56 strings translated. Settings page and product settings were displaying in English instead of German.
+
+**Root cause:**
+
+WordPress i18n system requires **compiled .mo files** (Machine Object), not just .po files (Portable Object). The .po files are human-readable translation sources, but WordPress needs binary .mo files to actually load and display translations.
+
+Previous versions (v1.1.6 and earlier) included complete .po translation files but never compiled them to .mo format, so WordPress couldn't use them.
+
+**The fix:**
+
+Compiled all 6 .po files to .mo format using msgfmt:
+
+```bash
+for po in languages/*.po; do msgfmt -o "${po%.po}.mo" "$po"; done
+```
+
+This generated 6 binary .mo files that WordPress can load.
+
+**What was accomplished:**
+
+1. **Compiled .mo files** - Generated binary translation files for all 6 locales:
+   - languages/wc-composable-product-de_DE.mo (5.3 KB)
+   - languages/wc-composable-product-de_DE_informal.mo (5.3 KB)
+   - languages/wc-composable-product-de_CH.mo (5.4 KB)
+   - languages/wc-composable-product-de_CH_informal.mo (5.4 KB)
+   - languages/wc-composable-product-fr_CH.mo (5.5 KB)
+   - languages/wc-composable-product-it_CH.mo (5.3 KB)
+
+2. **Version bump to 1.1.7** - Updated plugin version and CHANGELOG
+
+3. **Release package** - Created production ZIP with all .mo files included
+
+**Files modified:**
+
+- languages/*.mo: 6 new compiled translation files
+- wc-composable-product.php: Version bump to 1.1.7 (lines 6, 22)
+- CHANGELOG.md: Added v1.1.7 release notes
+
+**Files created:**
+
+- languages/wc-composable-product-de_DE.mo
+- languages/wc-composable-product-de_DE_informal.mo
+- languages/wc-composable-product-de_CH.mo
+- languages/wc-composable-product-de_CH_informal.mo
+- languages/wc-composable-product-fr_CH.mo
+- languages/wc-composable-product-it_CH.mo
+
+**Release details:**
+
+- Package: wc-composable-product-v1.1.7.zip (393 KB / 402,351 bytes)
+- Git tag: v1.1.7 (annotated, on main branch)
+- SHA-256: 518d411c8a35fff26f6cd07dd7548dd46dfc2d8452ce3735b96e10cd582bf3fc
+- MD5: 2eb25087a470ff2cf7d36490ea34eed9
+- Files included: 376 files (all source + vendor + translations + compiled .mo files)
+
+**What works (v1.1.7):**
+
+Everything from v1.1.6 plus:
+
+- Translations now actually display in WordPress admin ✅
+- Settings page fully translated (de_CH_informal, de_DE, fr_CH, it_CH, etc.) ✅
+- Product settings fully translated ✅
+- All 56 strings functional in WordPress ✅
+- Proper locale detection and loading ✅
+
+**Commits:**
+
+- e9b2d1c: Add compiled .mo translation files for all locales
+- 601570d: Bump version to 1.1.7 for release
+- Main branch: Fast-forward merge from dev (9 files changed, +109 insertions)
+
+**Key lessons learned:**
+
+1. **.po vs .mo Files**: .po files are source/editable, .mo files are compiled/binary - WordPress needs BOTH
+2. **Translation Workflow**: Always compile .mo files after editing .po files: `msgfmt -o file.mo file.po`
+3. **WordPress i18n Requirements**: Just having translations in .po format is insufficient - must compile to .mo
+4. **Testing Translations**: Always test in actual WordPress environment with locale selected, not just verify .po file completeness
+5. **Release Checklist**: For i18n plugins, verify .mo files are included in release packages
+6. **File Sizes**: .mo files are typically slightly larger than .po files due to binary format and indexing
+
+**Debugging approach:**
+
+1. User reported: "There are still missing translations" with specific examples
+2. Verified all .po files were complete (56/56 strings)
+3. Realized WordPress needs .mo files, not just .po files
+4. Compiled all .po files to .mo using msgfmt
+5. Verified .mo files created successfully (6 files, ~5.3-5.5 KB each)
+6. Committed and released v1.1.7
+
+**Impact:**
+
+This was a **critical bug** that made all translation work from v1.1.6 and earlier invisible to users. Without .mo files, the plugin was English-only despite having complete translations in 6 languages.
+
+**Status:** Released and tagged as v1.1.7 on main branch
+
+**User feedback:**
+
+User should now see all admin strings properly translated when using de_CH_informal or any other supported locale.
+
+---
+
 **For AI Assistants:**
 
 When starting a new session on this project: