feat: initial seed of domain-specific contrib skills

org-skill-org-delivery.org

@@ -0,0 +1,64 @@
+: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)
+