fix(mvp): 100% Green Boot, Llama.cpp backend, and setup refinement

skills/org-skill-llama-backend.org

@@ -0,0 +1,64 @@
+:PROPERTIES:
+:ID:       llama-backend-skill
+:CREATED:  [2026-04-17 Fri 20:00]
+:END:
+#+TITLE: SKILL: Llama.cpp Neuro-Backend (Sovereign Inference)
+#+STARTUP: content
+#+FILETAGS: :llm:backend:llama:sovereignty:
+
+* Overview
+The *Llama.cpp Backend* allows the OpenCortex to use local, air-gapped inference. It connects to a \`llama.cpp\` server (typically running on the local network) and registers itself as a provider in the kernel's probabilistic cascade.
+
+* Phase B: Blueprint (PROTOCOL)
+** 1. Architectural Intent
+This skill acts as a proxy between the OpenCortex kernel and the Lisp-agnostic \`llama.cpp\` REST API. It implements the standard backend signature required by \`register-probabilistic-backend\`.
+
+** 2. Semantic Interfaces
+- Endpoint: \`(uiop:getenv "LLAMACPP_ENDPOINT")\` (e.g., "http://10.10.10.x:8080")
+- Method: \`POST /completion\`
+- Response: JSON (parsed into Lisp)
+
+* Phase D: Build (Implementation)
+
+** Package Context
+#+begin_src lisp
+(in-package :opencortex)
+#+end_src
+
+** The Inference Engine (llama-inference)
+#+begin_src lisp
+(defun llama-inference (prompt system-prompt &key (model "local-model"))
+  "Sends a completion request to the local llama.cpp server."
+  (let ((endpoint (uiop:getenv "LLAMACPP_ENDPOINT")))
+    (unless endpoint
+      (harness-log "LLAMA ERROR: LLAMACPP_ENDPOINT not set in environment.")
+      (return-from llama-inference (list :error "LLAMACPP_ENDPOINT_MISSING")))
+
+    (handler-case
+        (let* ((full-prompt (format nil "System: ~a~%User: ~a~%Assistant:" system-prompt prompt))
+               (payload (cl-json:encode-json-to-string 
+                         \`((:prompt . ,full-prompt)
+                           (:n_predict . 1024)
+                           (:stop . ("User:" "System:")))))
+               (response (dex:post (format nil "~a/completion" endpoint)
+                                   :content payload
+                                   :headers '(("Content-Type" . "application/json"))))
+               (data (cl-json:decode-json-from-string response)))
+          (cdr (assoc :content data)))
+      (error (c)
+        (harness-log "LLAMA ERROR: Connection failed -> ~a" c)
+        (list :error (format nil "~a" c))))))
+#+end_src
+
+** Registration
+#+begin_src lisp
+(progn
+  (register-probabilistic-backend :llama #'llama-inference)
+  (harness-log "LLAMA: Local backend registered and active."))
+
+(defskill :skill-llama-backend
+  :priority 50
+  :trigger (lambda (ctx) (declare (ignore ctx)) nil) ; Pure infrastructure skill
+  :probabilistic nil
+  :deterministic (lambda (action ctx) (declare (ignore ctx)) action))
+#+end_src