build: dynamically tangle to INSTALL_DIR without copying .org files

- Updated all 150+ :tangle headers across harness/ and skills/ to use elisp (expand-file-name) to target INSTALL_DIR dynamically.
- Cleaned up environment/ directory depth by moving memory-image.lisp to state/.
- Moved test scripts to tests/ and deleted redundant chat scripts.

harness/communication.org

@@ -10,7 +10,7 @@ The ~communication.lisp~ module defines the low-level transport and framing logi
 
 * Implementation (communication.lisp)
 
-#+begin_src lisp :tangle ./communication.lisp
+#+begin_src lisp :tangle (expand-file-name "communication.lisp" (concat (or (getenv "INSTALL_DIR") ".") "/harness"))
 (in-package :opencortex)
 
 (defun proto-get (plist key)
@@ -21,7 +21,7 @@ The ~communication.lisp~ module defines the low-level transport and framing logi
     (or (getf plist up) (getf plist dn))))
 #+end_src
 
-#+begin_src lisp :tangle ./communication.lisp
+#+begin_src lisp :tangle (expand-file-name "communication.lisp" (concat (or (getenv "INSTALL_DIR") ".") "/harness"))
 (in-package :opencortex)
 
 (defvar *actuator-registry* (make-hash-table :test 'equalp)
@@ -78,7 +78,7 @@ The ~communication.lisp~ module defines the low-level transport and framing logi
 ** Structural Validation (communication-validator.lisp)
 The validator ensures that incoming messages adhere to the strict property list schema of the communication protocol.
 
-#+begin_src lisp :tangle ./communication-validator.lisp
+#+begin_src lisp :tangle (expand-file-name "communication-validator.lisp" (concat (or (getenv "INSTALL_DIR") ".") "/harness"))
 (in-package :opencortex)
 
 (defun validate-communication-protocol-schema (msg)
@@ -128,7 +128,7 @@ The validator ensures that incoming messages adhere to the strict property list
 ** Message Framing (communication.lisp)
 Frames a message with a hex length prefix and ensures all data is serializable.
 
-#+begin_src lisp :tangle ./communication.lisp
+#+begin_src lisp :tangle (expand-file-name "communication.lisp" (concat (or (getenv "INSTALL_DIR") ".") "/harness"))
 (defun sanitize-protocol-message (msg)
   "Recursively strips non-serializable objects from a protocol plist."
   (if (and msg (listp msg))
@@ -153,7 +153,7 @@ Frames a message with a hex length prefix and ensures all data is serializable.
 These tests verify the communication protocol functions. Run with:
 ~(fiveam:run! 'communication-protocol-suite)~
 
-#+begin_src lisp :tangle ./communication-tests.lisp
+#+begin_src lisp :tangle (expand-file-name "communication-tests.lisp" (concat (or (getenv "INSTALL_DIR") ".") "/harness"))
 (defpackage :opencortex-communication-tests
   (:use :cl :fiveam :opencortex)
   (:export #:communication-protocol-suite))