fix: HITL functions now properly loaded, define missing proto-get

Root cause chain:
1. proto-get was used throughout the pipeline but never defined — added
   to core-communication.org as a keyword-normalizing getf wrapper.
2. security-dispatcher.lisp was loaded by skill-initialize-all into a
   separate package, making HITL functions invisible to :passepartout.
   Fixed by adding to ASDF component list and excluding from skill loader.
3. org-id-generate was referenced from hitl-create but lives in an
   unexported skill package — replaced with uuid:make-v4-uuid.
4. uiop:string-prefix-p was called with :test keyword argument it does
   not accept — replaced with string-downcase normalization on both sides.

Also:
- Export hitl-create, hitl-approve, hitl-deny, hitl-handle-message,
  stimulus-inject from :passepartout for REPL accessibility.

lisp/core-defpackage.lisp

@@ -64,9 +64,14 @@
    #:act-gate
    #:reason-gate
    #:dispatch-gate
-   #:register-pre-reason-handler
-   #:inject-stimulus
-   #:actuator-initialize
+    #:register-pre-reason-handler
+    #:inject-stimulus
+    #:stimulus-inject
+    #:hitl-create
+    #:hitl-approve
+    #:hitl-deny
+    #:hitl-handle-message
+    #:actuator-initialize
    #:dispatch-action
    #:register-actuator
    #:load-skill-from-org