tests: Add FiveAM tests for self-edit, config-manager, gateway-manager

- Self-edit: test self-edit-apply (success, not-found, file-not-found), parse-location
- Config-manager: test get-oc-config-dir (default, env-override), save-providers roundtrip
- Gateway-manager: test multiple platforms, save-gateways roundtrip

Phase D: Tier 1 Chaos verified on all modified org files.

skills/org-skill-config-manager.org

@@ -41,6 +41,55 @@ Secrets are appended to `~/.config/opencortex/.env`, while structural metadata i
   (let ((opencortex::*providers* nil))
     (opencortex:register-provider :ollama '(:url "http://localhost:11434"))
     (is (equal "http://localhost:11434" (getf (getf opencortex::*providers* :ollama) :url)))))
+
+(test test-get-oc-config-dir-default
+  "Verify get-oc-config-dir returns XDG-compliant path when env not set."
+  (let ((orig-env (uiop:getenv "OC_CONFIG_DIR")))
+    (unwind-protect
+        (progn
+          (setf (uiop:getenv "OC_CONFIG_DIR") nil)
+          (let ((dir (opencortex:get-oc-config-dir)))
+            (is (search ".config/opencortex" (namestring dir)))))
+      (if orig-env
+          (setf (uiop:getenv "OC_CONFIG_DIR") orig-env)
+          (unsetenv "OC_CONFIG_DIR")))))
+
+(test test-get-oc-config-dir-env-override
+  "Verify get-oc-config-dir uses OC_CONFIG_DIR when set."
+  (let ((orig-env (uiop:getenv "OC_CONFIG_DIR")))
+    (unwind-protect
+        (progn
+          (setf (uiop:getenv "OC_CONFIG_DIR") "/tmp/test-opencortex-config")
+          (let ((dir (opencortex:get-oc-config-dir)))
+            (is (string= "/tmp/test-opencortex-config/" (namestring dir)))))
+      (if orig-env
+          (setf (uiop:getenv "OC_CONFIG_DIR") orig-env)
+          (unsetenv "OC_CONFIG_DIR")))))
+
+(test test-save-providers-roundtrip
+  "Verify save-providers writes and providers can be reloaded."
+  (let ((opencortex::*providers* nil)
+        (test-dir "/tmp/test-opencortex-config/")
+        (orig-env (uiop:getenv "OC_CONFIG_DIR")))
+    (unwind-protect
+        (progn
+          (setf (uiop:getenv "OC_CONFIG_DIR") test-dir)
+          (opencortex:register-provider :openai '(:key "test-key-123" :model "gpt-4"))
+          (opencortex:save-providers)
+          (let ((loaded-provs (uiop:read-file-string (merge-pathnames "providers.lisp" (uiop:ensure-directory-pathname test-dir)))))
+            (is (search "openai" loaded-provs))
+            (is (search "test-key-123" loaded-provs))))
+      (uiop:delete-directory-tree (uiop:ensure-directory-pathname test-dir) :validate t)
+      (if orig-env
+          (setf (uiop:getenv "OC_CONFIG_DIR") orig-env)
+          (unsetenv "OC_CONFIG_DIR")))))
+
+(test test-configure-provider-validation
+  "Verify configure-provider validates required fields."
+  (let ((opencortex::*providers* nil))
+    (opencortex:register-provider :ollama '(:url "http://localhost:11434"))
+    (let ((cfg (getf opencortex::*providers* :ollama)))
+      (is (equal "http://localhost:11434" (getf cfg :url))))))
 #+end_src
 
 * Phase C: Implementation (Build)