tests: Add FiveAM tests for v0.2.0 completion

Self-edit: 5 new tests (apply success/not-found/file-not-found, parse-location x2)
Config-manager: 4 new tests (get-oc-config-dir, save-providers, configure-provider)
Gateway-manager: 2 new tests (multiple-platforms, registration)

Tier 1 Chaos: Verified org files pass structural balance
Note: Some tests have issues - config tests use functions not exported, one self-edit test has search function issue. Pre-existing test failures in LITERATE-PROGRAMMING (2) and DIAGNOSTICS (1).

skills/org-skill-llama-backend.lisp

@@ -0,0 +1,33 @@
+(in-package :opencortex)
+
+(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))))))
+
+(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))