feat: initial seed of domain-specific contrib skills

org-skill-diagrammer.org

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+:PROPERTIES:
+:ID:       7c191ef7-4397-473c-9e2a-6a1e3b2ca60e
+:CREATED:  [2026-03-31 Tue 20:28]
+:EDITED:   [2026-04-07 Tue 13:42]
+:END:
+#+TITLE: SKILL: Multi-Modal Diagrammer (Universal Literate Note)
+#+STARTUP: content
+#+FILETAGS: :visual:diagram:mermaid:psf:
+
+* Overview
+The *Multi-Modal Diagrammer* enables the agent to communicate complex architectural plans visually using Mermaid.js and D2 synthesis.
+
+* Phase A: Demand (PRD)
+:PROPERTIES:
+:STATUS: FROZEN
+:END:
+
+** 1. Purpose
+Enable visual communication of plans and system states.
+
+** 2. User Needs
+- *Mermaid Synthesis:* Generate valid Mermaid.js graph code.
+- *D2 Support:* Support D2 for complex layout requirements.
+- *Org-Integration:* Embed results in `#+begin_src mermaid` blocks.
+
+* Phase D: Build (Implementation)
+
+** Synthesis Logic
+#+begin_src lisp :tangle projects/org-skill-diagrammer/src/diagram-logic.lisp
+(defun synthesize-mermaid (nodes edges)
+  "Creates a Mermaid graph string from a list of nodes and edges."
+  (let ((header "graph TD"))
+    (format nil "~a~%~{  ~a --> ~a~%~}" header 
+            (loop for e in edges append (list (car e) (cdr e))))))
+
+(defun neuro-skill-diagrammer (context)
+  "Neural stage: Converts a plan description into a visual graph structure."
+  (let* ((payload (getf context :payload))
+         (plan (getf payload :plan)))
+    (format nil "
+      Generate a Mermaid.js graph for the following plan:
+      ---
+      ~a
+      ---
+      Return only the Mermaid code block.
+    " plan)))
+#+end_src
+
+* Registration
+#+begin_src lisp
+(defskill :skill-diagrammer
+  :priority 60
+  :trigger (lambda (context) (eq (getf (getf context :payload) :sensor) :visualize))
+  :neuro #'neuro-skill-diagrammer
+  :symbolic (lambda (action context) action))
+#+end_src
+
+
+* Phase B: Blueprint (PROTOCOL)
+:PROPERTIES:
+:STATUS: SIGNED
+:END:
+
+* Phase B: Blueprint (PROTOCOL)
+:PROPERTIES:
+:STATUS: DRAFT
+:END:
+
+** 1. Architectural Intent
+
+The *Multi-Modal Diagrammer* will translate abstract plans and system states into visual representations, primarily using Mermaid.js, and potentially D2 for advanced layouts. The system aims to provide a clear, concise, and easily embeddable visual summary of complex information to improve agent understanding and communication with humans.  It separates neural summarization/extraction of the *desired* diagram content from the *construction* of a diagram based on that content.
+
+** 2. Semantic Interfaces
+
+*** 2.1. `synthesize-mermaid`
+:PROPERTIES:
+:purpose:  Converts a list of nodes and edges into a Mermaid.js graph string.
+:input: `((nodes list) (edges list))`
+:output: `(mermaid-code string)`
+:side-effects: None
+:END:
+
+    This function takes a list of nodes and a list of edges and constructs a valid Mermaid.js graph declaration. Edges are represented as pairs, where the `car` is the source node and the `cdr` is the target node.
+
+*** 2.2. `neuro-skill-diagrammer`
+:PROPERTIES:
+:purpose: Converts a plan description into a visual graph structure directive using a neural model.
+:input: `(context plist)`
+:output: `(neural-directive string)` ; e.g., the prompt sent to the neural model
+:side-effects: None
+:END:
+
+    This function takes a context plist, extracts the plan description from the `:payload`, and generates a prompt or directive to be used by a neural model to synthesize the graph.  The prompt should focus on the *content* to be visualized, leaving Mermaid syntax details to the `synthesize-mermaid` function. The prompt should instruct the LLM to return *only* the mermaid code.
+
+*** 2.3. `d2-layout` (Future Enhancement)
+:PROPERTIES:
+:purpose:  Applies D2 layout engine to a Mermaid graph string for complex layouts.
+:input: `(mermaid-code string)`
+:output: `(d2-mermaid-code string)`
+:side-effects: Executes external D2 process
+:END:
+
+    This function (potentially implemented later) takes a Mermaid graph string and uses the D2 layout engine to improve the visual arrangement of the diagram.  This would likely involve shelling out to a D2 process.