FEAT: Implement Signal Gateway and update Chat Agent

skills/org-skill-chat.org

@@ -68,6 +68,8 @@ Interfaces for conversational event handling and UI integration. Source of truth
                                (member action '(:insert-at-end :INSERT-AT-END)))
                           (and (member target '(:telegram :TELEGRAM))
                                (or (getf payload :chat-id) (getf proposed-action :chat-id)))
+                          (and (member target '(:signal :SIGNAL))
+                               (or (getf payload :chat-id) (getf proposed-action :chat-id)))
                           (and (member target '(:shell :SHELL))
                                (or (getf payload :cmd) (getf proposed-action :cmd)))
                           (member target '(:tool :TOOL))))
@@ -95,6 +97,7 @@ The Chat skill acts as the conversational UI. Because the ~org-agent~ kernel eva
          (reply-instruction 
           (case channel
             (:telegram (format nil "- To reply via Telegram: (:type :REQUEST :target :telegram :chat-id \"~a\" :text \"<Response>\")" chat-id))
+            (:signal (format nil "- To reply via Signal: (:type :REQUEST :target :signal :chat-id \"~a\" :text \"<Response>\")" chat-id))
             (t "- To reply via Emacs: (:type :REQUEST :target :emacs :action :insert-at-end :buffer \"*org-agent-chat*\" :text \"* <Response>\")"))))
     (ask-neuro trimmed-text :system-prompt (concatenate 'string 
                                                        "ACTUATOR IDENTITY: You are the pure Lisp actuator for the org-agent kernel.

skills/org-skill-gateway-signal.org

@@ -0,0 +1,155 @@
+:PROPERTIES:
+:ID:       gateway-signal-skill
+:CREATED:  [2026-04-11 Sat 16:30]
+:END:
+#+TITLE: SKILL: Signal Gateway (Universal Literate Note)
+#+STARTUP: content
+#+FILETAGS: :gateway:signal:io:psf:
+#+DEPENDS_ON: id:credentials-vault-skill
+
+* Overview
+The *Signal Gateway* provides bi-directional communication between the Sovereign and the Org-Agent via the `signal-cli` tool. It features a non-blocking polling sensor and a high-integrity actuator for outbound messaging.
+
+* Phase A: Demand (PRD)
+:PROPERTIES:
+:STATUS: SIGNED
+:END:
+
+** 1. Purpose
+Enable secure Signal communication for the Org-Agent.
+
+** 2. Success Criteria
+- [ ] *Inbound:* Messages received via `signal-cli receive` are injected into the Kernel Bus.
+- [ ] *Outbound:* The `:signal` target correctly routes messages via `signal-cli send`.
+- [ ] *Robustness:* Handles JSON output from `signal-cli` and filters system messages.
+
+* Phase B: Blueprint (PROTOCOL)
+:PROPERTIES:
+:STATUS: SIGNED
+:END:
+
+** 1. Architectural Intent
+Wraps the `signal-cli` binary. Polling is done in a background thread to prevent blocking the kernel.
+
+** 2. Semantic Interfaces
+- `(:sensor :chat-message :channel :signal ...)`
+- `(:type :REQUEST :target :signal :chat-id "+1..." :text "...")`
+
+* Phase D: Build (Implementation)
+
+** Package Context
+#+begin_src lisp :tangle ../src/gateway-signal.lisp
+(in-package :org-agent)
+#+end_src
+
+** State: Signal Identity
+The primary account number used for communication.
+
+#+begin_src lisp :tangle ../src/gateway-signal.lisp
+(defvar *signal-account* "+13322690326")
+#+end_src
+
+** State: Polling Thread
+Reference to the background thread responsible for message reception.
+
+#+begin_src lisp :tangle ../src/gateway-signal.lisp
+(defvar *signal-polling-thread* nil)
+#+end_src
+
+** Actuator: sendMessage
+Executes the `signal-cli send` command.
+
+#+begin_src lisp :tangle ../src/gateway-signal.lisp
+(defun execute-signal-action (action context)
+  "Sends a message via signal-cli."
+  (declare (ignore context))
+  (let* ((payload (getf action :payload))
+         (chat-id (or (getf payload :chat-id) (getf action :chat-id)))
+         (text (or (getf payload :text) (getf action :text))))
+    (when (and chat-id text)
+      (kernel-log "SIGNAL: Sending message to ~a..." chat-id)
+      (handler-case 
+          (uiop:run-program (list "signal-cli" "-u" *signal-account* "send" "-m" text chat-id)
+                            :output :string :error-output :string)
+        (error (c) (kernel-log "SIGNAL ERROR: ~a" c))))))
+#+end_src
+
+** Sensor: receive & Injection
+Polls for new messages and injects them into the kernel.
+
+#+begin_src lisp :tangle ../src/gateway-signal.lisp
+(defun signal-process-updates ()
+  "Polls for new messages via signal-cli and injects them into the kernel."
+  (handler-case
+      (let* ((output (uiop:run-program (list "signal-cli" "-u" *signal-account* "receive" "--json")
+                                       :output :string :error-output :string :ignore-error-status t))
+             (lines (cl-ppcre:split "\\n" output)))
+        (dolist (line lines)
+          (when (and line (> (length line) 0))
+            (let* ((json (ignore-errors (cl-json:decode-json-from-string line)))
+                   (envelope (cdr (assoc :envelope json)))
+                   (source (cdr (assoc :source envelope)))
+                   (data-message (cdr (assoc :data-message envelope)))
+                   (text (cdr (assoc :message data-message))))
+              (when (and source text)
+                (kernel-log "SIGNAL: Received message from ~a" source)
+                (inject-stimulus 
+                 (list :type :EVENT 
+                       :payload (list :sensor :chat-message 
+                                      :channel :signal 
+                                      :chat-id source 
+                                      :text text))))))))
+    (error (c) (kernel-log "SIGNAL POLL ERROR: ~a" c))))
+#+end_src
+
+** Start Polling
+Initializes the Signal background thread.
+
+#+begin_src lisp :tangle ../src/gateway-signal.lisp
+(defun start-signal-gateway ()
+  "Initializes the Signal background thread."
+  (unless (and *signal-polling-thread* (bt:thread-alive-p *signal-polling-thread*))
+    (setf *signal-polling-thread*
+          (bt:make-thread 
+           (lambda ()
+             (loop
+               (signal-process-updates)
+               (sleep 5)))
+           :name "org-agent-signal-gateway"))
+    (kernel-log "SIGNAL: Gateway polling active.")))
+#+end_src
+
+** Stop Polling
+Gracefully terminates the background thread.
+
+#+begin_src lisp :tangle ../src/gateway-signal.lisp
+(defun stop-signal-gateway ()
+  (when (and *signal-polling-thread* (bt:thread-alive-p *signal-polling-thread*))
+    (bt:destroy-thread *signal-polling-thread*)
+    (setf *signal-polling-thread* nil)))
+#+end_src
+
+** Registration: Actuator
+Register the Signal channel as a physical actuator.
+
+#+begin_src lisp :tangle ../src/gateway-signal.lisp
+(register-actuator :signal #'execute-signal-action)
+#+end_src
+
+** Registration: Skill
+Define the passive skill entry for the gateway.
+
+#+begin_src lisp :tangle ../src/gateway-signal.lisp
+(defskill :skill-gateway-signal
+  :priority 150
+  :trigger (lambda (ctx) (declare (ignore ctx)) nil) ;; Passive
+  :neuro nil
+  :symbolic (lambda (action ctx) (declare (ignore ctx)) action))
+#+end_src
+
+** Initialization
+Trigger the polling loop upon loading.
+
+#+begin_src lisp :tangle ../src/gateway-signal.lisp
+(start-signal-gateway)
+#+end_src