diff --git a/CHANGELOG.md b/CHANGELOG.md
index 033736128..b517db4e1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,80 @@ Format based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
 
 ## [Unreleased]
 
+## [2.51.0] - 2026-03-26
+
+### Added
+- add /terminal slash command for direct shell execution (#2349)
+- **auto**: check verification class compliance before milestone completion (#2623)
+- **validate**: extract followUps and knownLimitations in parseSummary (#2622)
+- managed RTK integration with opt-in preference and web UI toggle (#2620)
+- **validate**: inject verification classes into milestone validation prompt (#2621)
+- **skills**: add 19 wshobson/agents packs with 40 curated skills
+- **skills**: add 11 new skill packs covering major frameworks and languages
+- **skills**: add SQLite/SQL detection, SQL optimization pack, and Redis pack
+- **skills**: add Prisma and Supabase/Postgres database packs
+- **skills**: add cloud platform packs (Firebase, Azure, AWS) and improve detection
+- **skills**: curate catalog — add top ecosystem skills, drop low-quality bundled ones
+- **skills**: parse SDKROOT from pbxproj for platform-aware iOS skill matching
+- **skills**: use ~/.agents/skills/ as primary skills directory with curated catalog
+
+### Fixed
+- improve light theme warning contrast (#2674)
+- honor explicit model config when model is not in known tier map (#2643)
+- exclude lastReasoning from retry diagnostic to prevent hallucination loops (#2663)
+- persist rewrite-docs attempt counter to disk for session restart survival (#2671)
+- add non-null assertions for parseUnitId optional fields in tests
+- update triage-dispatch static analysis tests for enqueueSidecar helper
+- **notifications**: prefer terminal-notifier over osascript on macOS (#2633)
+- classify stream-truncation JSON parse errors as transient (#2636)
+- call ensureDbOpen() before slice queries in /gsd discuss (#2640)
+- **prompts**: use --body-file for forensics issue creation (#2641)
+- isLockProcessAlive should return true for own PID (#2642)
+- check ASSESSMENT file for UAT verdict in checkNeedsRunUat (#2646)
+- use pauseAuto instead of stopAuto for warning-level dispatch stops (#2666)
+- signal malformed tool arguments in toolcall_end event (#2647)
+- prevent double mergeAndExit on milestone completion (#2648)
+- respect queue-order.json in DB-backed state derivation (#2649)
+- **vscode**: support Remote SSH by adding extensionKind and error handler (#2650)
+- update DB task status in writeBlockerPlaceholder for execute-task (#2657)
+- normalize path separators in matchesProjectFileMarker for Windows
+- **tests**: remove obsolete doctor filesystem test
+- **tests**: update doctor issue code to db_done_task_no_summary
+- restore PR files lost during merge conflict resolution
+- **skills**: address QA round 3
+- **skills**: address QA round 2
+- **skills**: address QA round 1
+- **skills**: prioritize ecosystem dir and skip legacy after migration
+- **skills**: address QA round 23
+- **skills**: address QA round 22
+- **skills**: address QA round 21
+- **skills**: address QA round 20
+- **skills**: address QA round 19
+- **skills**: address QA round 18
+- **skills**: address QA round 17
+- **skills**: address QA round 16
+- **skills**: address QA round 15
+- **skills**: address QA round 14
+- **skills**: address QA round 13
+- **skills**: address QA round 12
+- **skills**: address QA round 11
+- **skills**: address QA round 10
+- **skills**: address QA round 8
+- **skills**: detect FastAPI via dependency scanning
+- **skills**: address QA round 6
+- **skills**: address QA round 5
+- **skills**: address QA round 4
+- **skills**: address QA round 3
+- **skills**: address QA round 2
+- **skills**: defer greenfield skill selection to post-design phase
+- **skills**: add migration from ~/.gsd/agent/skills/ to ~/.agents/skills/
+- **gsd extension**: detect initialized projects in health widget
+- **gsd extension**: detect initialized projects in health widget
+
+### Changed
+- consolidate docs, remove stale artifacts, and repo hygiene (#2665)
+- extract runSafely helper for try-catch-debug-continue pattern (#2611)
+
 ## [2.50.0] - 2026-03-26
 
 ### Added
@@ -1933,7 +2007,8 @@ Format based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
 ### Changed
 - License updated to MIT
 
-[Unreleased]: https://github.com/gsd-build/gsd-2/compare/v2.50.0...HEAD
+[Unreleased]: https://github.com/gsd-build/gsd-2/compare/v2.51.0...HEAD
+[2.51.0]: https://github.com/gsd-build/gsd-2/compare/v2.50.0...v2.51.0
 [2.50.0]: https://github.com/gsd-build/gsd-2/compare/v2.49.0...v2.50.0
 [2.49.0]: https://github.com/gsd-build/gsd-2/compare/v2.48.0...v2.49.0
 [2.48.0]: https://github.com/gsd-build/gsd-2/compare/v2.47.0...v2.48.0
diff --git a/native/npm/darwin-arm64/package.json b/native/npm/darwin-arm64/package.json
index c6bdfabac..88f6df2f4 100644
--- a/native/npm/darwin-arm64/package.json
+++ b/native/npm/darwin-arm64/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@gsd-build/engine-darwin-arm64",
-  "version": "2.50.0",
+  "version": "2.51.0",
   "description": "GSD native engine binary for macOS ARM64",
   "os": [
     "darwin"
diff --git a/native/npm/darwin-x64/package.json b/native/npm/darwin-x64/package.json
index 7f9d075e0..645271135 100644
--- a/native/npm/darwin-x64/package.json
+++ b/native/npm/darwin-x64/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@gsd-build/engine-darwin-x64",
-  "version": "2.50.0",
+  "version": "2.51.0",
   "description": "GSD native engine binary for macOS Intel",
   "os": [
     "darwin"
diff --git a/native/npm/linux-arm64-gnu/package.json b/native/npm/linux-arm64-gnu/package.json
index e995bf6b8..00db9b8dd 100644
--- a/native/npm/linux-arm64-gnu/package.json
+++ b/native/npm/linux-arm64-gnu/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@gsd-build/engine-linux-arm64-gnu",
-  "version": "2.50.0",
+  "version": "2.51.0",
   "description": "GSD native engine binary for Linux ARM64 (glibc)",
   "os": [
     "linux"
diff --git a/native/npm/linux-x64-gnu/package.json b/native/npm/linux-x64-gnu/package.json
index 3666ec1f4..b6974bc35 100644
--- a/native/npm/linux-x64-gnu/package.json
+++ b/native/npm/linux-x64-gnu/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@gsd-build/engine-linux-x64-gnu",
-  "version": "2.50.0",
+  "version": "2.51.0",
   "description": "GSD native engine binary for Linux x64 (glibc)",
   "os": [
     "linux"
diff --git a/native/npm/win32-x64-msvc/package.json b/native/npm/win32-x64-msvc/package.json
index 9e545495b..faaed6482 100644
--- a/native/npm/win32-x64-msvc/package.json
+++ b/native/npm/win32-x64-msvc/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@gsd-build/engine-win32-x64-msvc",
-  "version": "2.50.0",
+  "version": "2.51.0",
   "description": "GSD native engine binary for Windows x64 (MSVC)",
   "os": [
     "win32"
diff --git a/package.json b/package.json
index 8185a7e67..c24afcbf2 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "gsd-pi",
-  "version": "2.50.0",
+  "version": "2.51.0",
   "description": "GSD — Get Shit Done coding agent",
   "license": "MIT",
   "repository": {
diff --git a/packages/pi-coding-agent/package.json b/packages/pi-coding-agent/package.json
index 32be8acac..54dcbffc7 100644
--- a/packages/pi-coding-agent/package.json
+++ b/packages/pi-coding-agent/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@gsd/pi-coding-agent",
-  "version": "2.50.0",
+  "version": "2.51.0",
   "description": "Coding agent CLI (vendored from pi-mono)",
   "type": "module",
   "piConfig": {
diff --git a/pkg/package.json b/pkg/package.json
index b275c2e18..84a0bdc88 100644
--- a/pkg/package.json
+++ b/pkg/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@glittercowboy/gsd",
-  "version": "2.50.0",
+  "version": "2.51.0",
   "piConfig": {
     "name": "gsd",
     "configDir": ".gsd"