diff --git a/gtd.org b/gtd.org
index 5e3a317..b841084 100644
--- a/gtd.org
+++ b/gtd.org
@@ -164,7 +164,16 @@ Slim down the org-agent microkernel by moving non-essential cognitive functions
     - Implemented `:telegram` actuator for outbound responses.
     - Refactored `org-skill-chat` to be channel-aware.
     - Verified with `gateway-telegram-tests.lisp`.
-**** TODO Implement org-skill-gateway-signal
+**** DONE Implement org-skill-gateway-signal
+    CLOSED: [2026-04-11 Sat 16:50]
+    :PROPERTIES:
+    :ID: gateway-signal-task
+    :END:
+    - Implemented `org-skill-gateway-signal.org` (signal-cli wrapper).
+    - Added background polling for `signal-cli receive --json`.
+    - Implemented `:signal` actuator for outbound responses.
+    - Updated `org-skill-chat` to support Signal channel.
+    - Verified with `gateway-signal-tests.lisp`.
 **** TODO Implement org-skill-gateway-matrix
 
 *** TRACK: DEPLOYMENT & INFRASTRUCTURE
diff --git a/projects/org-agent b/projects/org-agent
index 975a11d..212dcd8 160000
--- a/projects/org-agent
+++ b/projects/org-agent
@@ -1 +1 @@
-Subproject commit 975a11da79dff8eea768af5aa8fcd53a34438a25
+Subproject commit 212dcd87348f1c6c9526d64e9b9fcbe5c2f4719b