diff --git a/docs/i18n/ar/CHANGELOG.md b/docs/i18n/ar/CHANGELOG.md
index 6b5ceb44a9..860420a18b 100644
--- a/docs/i18n/ar/CHANGELOG.md
+++ b/docs/i18n/ar/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/az/CHANGELOG.md b/docs/i18n/az/CHANGELOG.md
index 1998cc459e..100b07a15f 100644
--- a/docs/i18n/az/CHANGELOG.md
+++ b/docs/i18n/az/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/bg/CHANGELOG.md b/docs/i18n/bg/CHANGELOG.md
index 1998cc459e..100b07a15f 100644
--- a/docs/i18n/bg/CHANGELOG.md
+++ b/docs/i18n/bg/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/bn/CHANGELOG.md b/docs/i18n/bn/CHANGELOG.md
index e9c2116d1f..d118b39280 100644
--- a/docs/i18n/bn/CHANGELOG.md
+++ b/docs/i18n/bn/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/cs/CHANGELOG.md b/docs/i18n/cs/CHANGELOG.md
index 2c57932a7c..7da8fbacc6 100644
--- a/docs/i18n/cs/CHANGELOG.md
+++ b/docs/i18n/cs/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/da/CHANGELOG.md b/docs/i18n/da/CHANGELOG.md
index ec06f94626..14f9aba83e 100644
--- a/docs/i18n/da/CHANGELOG.md
+++ b/docs/i18n/da/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/de/CHANGELOG.md b/docs/i18n/de/CHANGELOG.md
index 36c67d8966..eeffa5c69d 100644
--- a/docs/i18n/de/CHANGELOG.md
+++ b/docs/i18n/de/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/es/CHANGELOG.md b/docs/i18n/es/CHANGELOG.md
index 1f5fda9657..742bbb9de5 100644
--- a/docs/i18n/es/CHANGELOG.md
+++ b/docs/i18n/es/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/fa/CHANGELOG.md b/docs/i18n/fa/CHANGELOG.md
index ad68fc0c3c..5c9321c3b1 100644
--- a/docs/i18n/fa/CHANGELOG.md
+++ b/docs/i18n/fa/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/fi/CHANGELOG.md b/docs/i18n/fi/CHANGELOG.md
index 8a03803c50..4e1c35d7fb 100644
--- a/docs/i18n/fi/CHANGELOG.md
+++ b/docs/i18n/fi/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/fr/CHANGELOG.md b/docs/i18n/fr/CHANGELOG.md
index e15f235600..e2b2a84676 100644
--- a/docs/i18n/fr/CHANGELOG.md
+++ b/docs/i18n/fr/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/gu/CHANGELOG.md b/docs/i18n/gu/CHANGELOG.md
index 4487b7b511..6e74d3c1c5 100644
--- a/docs/i18n/gu/CHANGELOG.md
+++ b/docs/i18n/gu/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/he/CHANGELOG.md b/docs/i18n/he/CHANGELOG.md
index d80b7d33e8..724cfe630b 100644
--- a/docs/i18n/he/CHANGELOG.md
+++ b/docs/i18n/he/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/hi/CHANGELOG.md b/docs/i18n/hi/CHANGELOG.md
index 1f924d3b93..45b8a9f37a 100644
--- a/docs/i18n/hi/CHANGELOG.md
+++ b/docs/i18n/hi/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/hu/CHANGELOG.md b/docs/i18n/hu/CHANGELOG.md
index 6449f258d1..03fd8ed7c3 100644
--- a/docs/i18n/hu/CHANGELOG.md
+++ b/docs/i18n/hu/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/id/CHANGELOG.md b/docs/i18n/id/CHANGELOG.md
index 5f3ceb31ff..3083490be7 100644
--- a/docs/i18n/id/CHANGELOG.md
+++ b/docs/i18n/id/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/in/CHANGELOG.md b/docs/i18n/in/CHANGELOG.md
index ca90584e2e..bb1d34a8c6 100644
--- a/docs/i18n/in/CHANGELOG.md
+++ b/docs/i18n/in/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/it/CHANGELOG.md b/docs/i18n/it/CHANGELOG.md
index dbf77803d2..8b2b0fbd5b 100644
--- a/docs/i18n/it/CHANGELOG.md
+++ b/docs/i18n/it/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/ja/CHANGELOG.md b/docs/i18n/ja/CHANGELOG.md
index 3ce2baf619..66dde56a0d 100644
--- a/docs/i18n/ja/CHANGELOG.md
+++ b/docs/i18n/ja/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/ko/CHANGELOG.md b/docs/i18n/ko/CHANGELOG.md
index 0153ef3cf9..412134f5b5 100644
--- a/docs/i18n/ko/CHANGELOG.md
+++ b/docs/i18n/ko/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/mr/CHANGELOG.md b/docs/i18n/mr/CHANGELOG.md
index 96e1460624..3ef6f9fe55 100644
--- a/docs/i18n/mr/CHANGELOG.md
+++ b/docs/i18n/mr/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/ms/CHANGELOG.md b/docs/i18n/ms/CHANGELOG.md
index 7148d08e53..18300b6385 100644
--- a/docs/i18n/ms/CHANGELOG.md
+++ b/docs/i18n/ms/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/nl/CHANGELOG.md b/docs/i18n/nl/CHANGELOG.md
index 0f8923f9eb..252af13d11 100644
--- a/docs/i18n/nl/CHANGELOG.md
+++ b/docs/i18n/nl/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/no/CHANGELOG.md b/docs/i18n/no/CHANGELOG.md
index 44b6e9711b..1bfb2cafa2 100644
--- a/docs/i18n/no/CHANGELOG.md
+++ b/docs/i18n/no/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/phi/CHANGELOG.md b/docs/i18n/phi/CHANGELOG.md
index 95786679ad..d536943fd1 100644
--- a/docs/i18n/phi/CHANGELOG.md
+++ b/docs/i18n/phi/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/pl/CHANGELOG.md b/docs/i18n/pl/CHANGELOG.md
index 5870d733a1..7731433d60 100644
--- a/docs/i18n/pl/CHANGELOG.md
+++ b/docs/i18n/pl/CHANGELOG.md
@@ -8,6 +8,19 @@
 
 ---
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/pt-BR/CHANGELOG.md b/docs/i18n/pt-BR/CHANGELOG.md
index 6c430277e3..45b4ed755b 100644
--- a/docs/i18n/pt-BR/CHANGELOG.md
+++ b/docs/i18n/pt-BR/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/pt/CHANGELOG.md b/docs/i18n/pt/CHANGELOG.md
index 4690b1c9c4..12c69e10d1 100644
--- a/docs/i18n/pt/CHANGELOG.md
+++ b/docs/i18n/pt/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/ro/CHANGELOG.md b/docs/i18n/ro/CHANGELOG.md
index 39008e9108..c2790e3d4c 100644
--- a/docs/i18n/ro/CHANGELOG.md
+++ b/docs/i18n/ro/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/ru/CHANGELOG.md b/docs/i18n/ru/CHANGELOG.md
index 12cde3a35c..a11c8c992b 100644
--- a/docs/i18n/ru/CHANGELOG.md
+++ b/docs/i18n/ru/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/sk/CHANGELOG.md b/docs/i18n/sk/CHANGELOG.md
index b5e951cf9a..e727f3a31a 100644
--- a/docs/i18n/sk/CHANGELOG.md
+++ b/docs/i18n/sk/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/sv/CHANGELOG.md b/docs/i18n/sv/CHANGELOG.md
index 9d540d4171..bfdd03ca2b 100644
--- a/docs/i18n/sv/CHANGELOG.md
+++ b/docs/i18n/sv/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/sw/CHANGELOG.md b/docs/i18n/sw/CHANGELOG.md
index 17bbccc3b9..2d26a8de9b 100644
--- a/docs/i18n/sw/CHANGELOG.md
+++ b/docs/i18n/sw/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/ta/CHANGELOG.md b/docs/i18n/ta/CHANGELOG.md
index 4b829b7c6a..351468083a 100644
--- a/docs/i18n/ta/CHANGELOG.md
+++ b/docs/i18n/ta/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/te/CHANGELOG.md b/docs/i18n/te/CHANGELOG.md
index 110658662c..06bd866f9b 100644
--- a/docs/i18n/te/CHANGELOG.md
+++ b/docs/i18n/te/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/th/CHANGELOG.md b/docs/i18n/th/CHANGELOG.md
index 2a14d711e1..2e0b72d914 100644
--- a/docs/i18n/th/CHANGELOG.md
+++ b/docs/i18n/th/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/tr/CHANGELOG.md b/docs/i18n/tr/CHANGELOG.md
index 301b8c4c57..aa654b8312 100644
--- a/docs/i18n/tr/CHANGELOG.md
+++ b/docs/i18n/tr/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/uk-UA/CHANGELOG.md b/docs/i18n/uk-UA/CHANGELOG.md
index 52149c0a59..0929676df7 100644
--- a/docs/i18n/uk-UA/CHANGELOG.md
+++ b/docs/i18n/uk-UA/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/ur/CHANGELOG.md b/docs/i18n/ur/CHANGELOG.md
index dff82d6a3a..31407619f0 100644
--- a/docs/i18n/ur/CHANGELOG.md
+++ b/docs/i18n/ur/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/vi/CHANGELOG.md b/docs/i18n/vi/CHANGELOG.md
index 7c8ae6cf68..c80e090d85 100644
--- a/docs/i18n/vi/CHANGELOG.md
+++ b/docs/i18n/vi/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/zh-CN/CHANGELOG.md b/docs/i18n/zh-CN/CHANGELOG.md
index 8dbfc7e984..04c4841afe 100644
--- a/docs/i18n/zh-CN/CHANGELOG.md
+++ b/docs/i18n/zh-CN/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/i18n/zh-TW/CHANGELOG.md b/docs/i18n/zh-TW/CHANGELOG.md
index dd8c30f2f8..5f14869087 100644
--- a/docs/i18n/zh-TW/CHANGELOG.md
+++ b/docs/i18n/zh-TW/CHANGELOG.md
@@ -6,6 +6,19 @@
 
 ## [3.8.31] — 2026-06-20
 
+## [3.8.51] — TBD
+
+_Living section — cycle opened at the v3.8.50 freeze (parallel-cycle model). Bullets are aggregated from `changelog.d/` fragments at each `/generate-release` phase._
+
+### ✨ New Features
+
+### 🐛 Bug Fixes
+
+### 📝 Maintenance
+
+---
+
+
 ## [3.8.50] — TBD
 
 _Living section — regenerated 2026-08-12 from all cycle commits (cycle open `ed2db6cb19` → tip). Bullets carry the merged PR and its author; direct pushes listed separately._
diff --git a/docs/openapi.yaml b/docs/openapi.yaml
index 9fae13e631..7ce251c6a5 100644
--- a/docs/openapi.yaml
+++ b/docs/openapi.yaml
@@ -1,7 +1,7 @@
 openapi: 3.1.0
 info:
   title: OmniRoute API
-  version: 3.8.50
+  version: 3.8.51
   description: |
     OmniRoute is a local-first AI API proxy router. It provides an OpenAI-compatible
     endpoint that routes requests to multiple AI providers with load balancing,
diff --git a/electron/package.json b/electron/package.json
index bdb8b205f5..0eb4fb3df4 100644
--- a/electron/package.json
+++ b/electron/package.json
@@ -1,6 +1,6 @@
 {
   "name": "omniroute-desktop",
-  "version": "3.8.50",
+  "version": "3.8.51",
   "description": "OmniRoute Desktop Application",
   "main": "main.js",
   "author": {
diff --git a/open-sse/package.json b/open-sse/package.json
index 858e80d0c8..da5329e8fd 100644
--- a/open-sse/package.json
+++ b/open-sse/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@omniroute/open-sse",
-  "version": "3.8.50",
+  "version": "3.8.51",
   "description": "OmniRoute streaming engine — handles provider dispatch, protocol translation, and SSE streaming",
   "type": "module",
   "private": true
diff --git a/package-lock.json b/package-lock.json
index 57f3bbe0ac..5e07bc35a0 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "omniroute",
-  "version": "3.8.50",
+  "version": "3.8.51",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "omniroute",
-      "version": "3.8.50",
+      "version": "3.8.51",
       "hasInstallScript": true,
       "license": "MIT",
       "workspaces": [
@@ -38178,7 +38178,7 @@
     },
     "open-sse": {
       "name": "@omniroute/open-sse",
-      "version": "3.8.50"
+      "version": "3.8.51"
     },
     "packages/browser-pool": {
       "name": "@omniroute/browser-pool",
diff --git a/package.json b/package.json
index cf08e93b61..c60f7a3d47 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "omniroute",
-  "version": "3.8.50",
+  "version": "3.8.51",
   "description": "Unified AI router with 350 providers, RTK+Caveman compression, auto fallback, MCP/A2A, desktop, PWA, and OpenAI-compatible APIs.",
   "type": "module",
   "bin": {