Advait Paliwal (advaitpaliwal) · Oct 18, 2026 · Oct 18, 2026
diff --git a/RELEASES.md b/RELEASES.md
@@ -6,6 +6,14 @@ GitHub release notes are generated from the matching `## vX.Y.Z` section in this
 
 ## Unreleased
 
+## v0.5.50 - 2026-10-18
+
+- **pi-subagents 0.79.1.**
+  - Sessions that have not delegated yet no longer send the `bg_wait` and `subagent_supervisor` tool definitions with every request, about 1,500 characters saved per request.
+  - When a workflow's main process dies, research subagents that had already finished keep their results instead of being marked failed.
+  - Workflow lanes in the widget and `status` show each subagent's model.
+  - Read-only installs no longer log a "permission denied" error about the upgrade notice on every start.
+
 ## v0.5.49 - 2026-10-17
 
 - **pi-subagents 0.79.0.**

diff --git a/package-lock.json b/package-lock.json
diff --git a/package.json b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@companion-ai/feynman",
-  "version": "0.5.49",
+  "version": "0.5.50",
   "description": "The open source AI research agent.",
   "license": "MIT",
   "type": "module",
@@ -85,7 +85,7 @@
     "fast-xml-parser": "5.11.2",
     "pi-btw": "0.8.0",
     "pi-docparser": "4.0.0",
-    "pi-subagents": "0.79.0",
+    "pi-subagents": "0.79.1",
     "pi-web-access": "0.42.0",
     "posthog-node": "^5.53.0"
   },

diff --git a/website/src/content/docs/reference/package-stack.md b/website/src/content/docs/reference/package-stack.md
@@ -81,4 +81,4 @@ Core packages are not touched by `feynman update` because they ship with Feynman
 
 ## Runtime versions
 
-Feynman 0.5.49 runs Pi 1.3.0 with pi-subagents 0.79.0, pi-web-access 0.42.0, pi-docparser 4.0.0, pi-btw 0.8.0, and Alpha Hub 0.1.7 as ordinary npm dependencies, and does not modify any of them on disk. Every release is checked by booting the installed CLI in Pi RPC mode on Linux, macOS, and Windows.
+Feynman 0.5.50 runs Pi 1.3.0 with pi-subagents 0.79.1, pi-web-access 0.42.0, pi-docparser 4.0.0, pi-btw 0.8.0, and Alpha Hub 0.1.7 as ordinary npm dependencies, and does not modify any of them on disk. Every release is checked by booting the installed CLI in Pi RPC mode on Linux, macOS, and Windows.
diff --git a/website/src/content/docs/reference/releases.md b/website/src/content/docs/reference/releases.md
@@ -9,6 +9,14 @@ This page summarizes what changed in recent Feynman releases. GitHub releases us
 
 ## Unreleased
 
+## v0.5.50 - 2026-10-18
+
+- **pi-subagents 0.79.1.**
+  - Sessions that have not delegated yet no longer send the `bg_wait` and `subagent_supervisor` tool definitions with every request, about 1,500 characters saved per request.
+  - When a workflow's main process dies, research subagents that had already finished keep their results instead of being marked failed.
+  - Workflow lanes in the widget and `status` show each subagent's model.
+  - Read-only installs no longer log a "permission denied" error about the upgrade notice on every start.
+
 ## v0.5.49 - 2026-10-17
 
 - **pi-subagents 0.79.0.**
Original file line number	Diff line number	Diff line change
Expand Up		@@ -81,4 +81,4 @@ Core packages are not touched by `feynman update` because they ship with Feynman

		## Runtime versions

		Feynman 0.5.49 runs Pi 1.3.0 with pi-subagents 0.79.0, pi-web-access 0.42.0, pi-docparser 4.0.0, pi-btw 0.8.0, and Alpha Hub 0.1.7 as ordinary npm dependencies, and does not modify any of them on disk. Every release is checked by booting the installed CLI in Pi RPC mode on Linux, macOS, and Windows.
		Feynman 0.5.50 runs Pi 1.3.0 with pi-subagents 0.79.1, pi-web-access 0.42.0, pi-docparser 4.0.0, pi-btw 0.8.0, and Alpha Hub 0.1.7 as ordinary npm dependencies, and does not modify any of them on disk. Every release is checked by booting the installed CLI in Pi RPC mode on Linux, macOS, and Windows.