:PROPERTIES:
:ID:       4829cb25-efcb-4e0f-9285-7a045213d8b9
:CREATED:  [2026-03-30 Mon 21:16]
:EDITED:   [2026-04-07 Tue 13:42]
:END:
#+TITLE: SKILL: Chat Agent (Universal Literate Note)
#+STARTUP: content
#+FILETAGS: :chat:conversational:ui:psf:

* Overview
The *Chat Agent* provides a dedicated conversational interface within Emacs (`*org-agent-chat*`). It enables fluid dialogue while maintaining strict persona alignment and contextual awareness.

* Phase A: Demand (PRD)
:PROPERTIES:
:STATUS: FROZEN
:END:

** 1. Purpose
Define the interfaces for direct human-to-agent conversational interaction.

** 2. User Needs
- *Direct Interaction:* Specialized handler for `:chat-message` events.
- *Persona Alignment:* Consistency with the Identity Agent's definitions.
- *Contextual Awareness:* Reference to chat history for dialogue continuity.
- *Structural Output:* Responses formatted as valid Org-mode subtrees.

** 3. Success Criteria
*** TODO Chat Event Triggering
*** TODO Persona-Driven Response Generation
*** TODO Emacs Buffer Insertion Verification

* Phase B: Blueprint (PROTOCOL)
:PROPERTIES:
:STATUS: SIGNED
:END:

** 1. Architectural Intent
Interfaces for conversational event handling and UI integration. Source of truth is the dynamic chat buffer and the Identity skill.

** 2. Semantic Interfaces
#+begin_src lisp
(defun trigger-skill-chat (context)
  "Triggers on :sensor :chat-message.")

(defun verify-skill-chat (proposed-action context)
  "Ensures response is targeted to the correct Emacs buffer.")
#+end_src

* Phase D: Build (Implementation)

** Event Perception
#+begin_src lisp :tangle ../projects/org-skill-chat/src/chat-logic.lisp
(defun trigger-skill-chat (context)
  (let* ((payload (getf context :payload))
         (sensor (getf payload :sensor)))
    (eq sensor :chat-message)))
#+end_src

** Symbolic Verification
#+begin_src lisp :tangle ../projects/org-skill-chat/src/chat-logic.lisp
(defun verify-skill-chat (proposed-action context)
  (let* ((payload (getf proposed-action :payload))
         (action (or (getf payload :action) (getf proposed-action :action)))
         (target (getf proposed-action :target)))
    (if (and (listp proposed-action)
             (or (and (member (getf proposed-action :type) '(:request :REQUEST))
                      (or (and (member target '(:emacs :EMACS))
                               (member action '(:insert-at-end :INSERT-AT-END)))
                          (and (member target '(:shell :SHELL))
                               (or (getf payload :cmd) (getf proposed-action :cmd)))
                          (member target '(:tool :TOOL))))
                 (member (getf proposed-action :type) '(:response :RESPONSE :log :LOG))))
        proposed-action
        (let ((err-text (format nil "\n\n*System Error:* Chat agent returned invalid action: ~s" proposed-action)))
          `(:type :request :target :emacs :payload (:action :insert-at-end :buffer "*org-agent-chat*" :text ,err-text))))))
#+end_src

** Neural Response Generation
The Chat skill acts as the conversational UI. Because the ~org-agent~ kernel evaluates LLM output via ~read-from-string~ (expecting a valid s-expression) and the chat verifier strictly expects an Emacs ~:insert-at-end~ actuation, we must explicitly mandate that the LLM wraps its conversational output in a Common Lisp property list.

#+begin_src lisp :tangle ../projects/org-skill-chat/src/chat-logic.lisp
(defun neuro-skill-chat (context)
  "Generates a conversational response, stripping system errors from context."
  (let* ((payload (getf context :payload))
         (raw-text (getf payload :text))
         ;; Context Purge: Remove system errors and hallucinations from the history
         (clean-text (cl-ppcre:regex-replace-all "(?i)Unknown request|System Error.*|Thinking\\.\\.\\." raw-text ""))
         (trimmed-text (if (> (length clean-text) 1000) 
                           (subseq clean-text (- (length clean-text) 1000)) 
                           clean-text)))
    (ask-neuro trimmed-text :system-prompt "ACTUATOR IDENTITY: You are the pure Lisp actuator for the org-agent kernel.
MANDATE: Output EXACTLY ONE Common Lisp property list starting with (:type :REQUEST).
ZERO CONVERSATION: Do not explain. Do not use markdown.
STRICT RULE: Never output the strings 'Unknown request' or 'System Error'. 

REQUIRED FORMATS:
- To reply: (:type :REQUEST :target :emacs :action :insert-at-end :buffer \"*org-agent-chat*\" :text \"* <Response>\")
- To use a tool: (:type :REQUEST :target :tool :action :call :tool \"<name>\" :args (...))")))
#+end_src

* Registration
#+begin_src lisp
(defskill :skill-chat
  :priority 100
  :trigger #'trigger-skill-chat
  :neuro #'neuro-skill-chat
  :symbolic #'verify-skill-chat)
#+end_src