fix(chaos): use standard getenv for absolute tangle paths

skills/org-skill-llama-backend.org

@@ -1,4 +1,4 @@
-#+PROPERTY: header-args:lisp :tangle (concat (uiop:getenv "INSTALL_DIR") "/skills/org-skill-llama-backend.lisp" (expand-file-name ""))
+#+PROPERTY: header-args:lisp :tangle (concat (getenv "INSTALL_DIR") "/skills/org-skill-llama-backend.lisp" (expand-file-name ""))
 :PROPERTIES:
 :ID:       llama-backend-skill
 :CREATED:  [2026-04-17 Fri 20:00]
@@ -15,7 +15,7 @@ The *Llama.cpp Backend* allows the OpenCortex to use local, air-gapped inference
 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")
+- Endpoint: `(getenv "LLAMACPP_ENDPOINT")` (e.g., "http://10.10.10.x:8080")
 - Method: `POST /completion`
 - Response: JSON (parsed into Lisp)
 
@@ -30,7 +30,7 @@ This skill acts as a proxy between the OpenCortex kernel and the Lisp-agnostic `
 #+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")))
+  (let ((endpoint (getenv "LLAMACPP_ENDPOINT")))
     (unless endpoint
       (harness-log "LLAMA ERROR: LLAMACPP_ENDPOINT not set in environment.")
       (return-from llama-inference (list :error "LLAMACPP_ENDPOINT_MISSING")))