:PROPERTIES:
:ID:       d8b1fbf9-2a6e-453d-975b-f510c3a9c4c0
:CREATED:  [2026-03-30 Mon 21:16]
:EDITED:   [2026-04-07 Tue 13:42]
:END:
#+TITLE: SKILL: Org-Native Delivery Agent (Universal Literate Note)
#+STARTUP: content
#+FILETAGS: :delivery:actuator:external:psf:

* Overview
The *Org-Native Delivery Agent* is the primary outbound actuator for external messaging. It uses the "Inbox-as-a-Queue" pattern, enqueuing structured Org-mode headlines for external bridges (Signal, Telegram, etc.).

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

** 1. Purpose
Define the interfaces for asynchronous external message enqueuing.

** 2. User Needs
- *Asynchronous Dispatch:* Persistence via `delivery.org` file.
- *Multi-Channel Support:* Routing to Signal, Telegram, Discord.
- *Structured Provenance:* Timestamped entries with recipient IDs.

** 3. Success Criteria
*** TODO Queue Appending Verification
*** TODO Channel-specific ID Resolution
*** TODO Org Timestamp Formatting Accuracy


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

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

** 1. Architectural Intent

The *Org-Native Delivery Agent* will function as a *stateless* message queuing system.  It receives message envelopes as Lisp data structures, persists them to a designated Org-mode file (`delivery.org`), and returns upon successful enqueuing. External bridge processes are responsible for consuming messages from `delivery.org` and handling delivery to specific channels. This decoupling ensures resilience and scalability. We favor simplicity and robustness over complex routing logic *within* the Agent itself. The Org file acts as a source of truth for queued messages, enabling auditing and recovery.

** 2. Semantic Interfaces (Lisp Signatures)

#+BEGIN_SRC lisp
;;; Signature: `org-delivery-enqueue'
;;;
;;; Enqueues a message for delivery.
;;;
;;; Arguments:
;;;   `recipient-id`:  Channel-specific identifier (e.g., Signal number, Telegram chat ID). STRING.
;;;   `channel`: Keyword indicating the target channel.  SYMBOL (one of: :signal, :telegram, :discord, ...).
;;;   `message-body`: The content of the message. STRING. Can contain Org-mode markup.
;;;   `properties`: A plist of additional metadata.  LIST (plist).
;;;
;;; Returns:  A plist containing `:status :success` or `:status :failure` with an optional `:error-message`.
;;;  Upon success: returns a message id.
;;;  Upon failure: returns `:error-message`.
;;;
(defun org-delivery-enqueue (recipient-id channel message-body &optional properties)