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/reason.org

@@ -33,7 +33,7 @@ This means the reasoning pipeline can generate, modify, and execute its own comm
 
 * Package Context
 
-#+begin_src lisp :tangle ./reason.lisp
+#+begin_src lisp :tangle (expand-file-name "reason.lisp" (concat (or (getenv "INSTALL_DIR") ".") "/harness"))
 (in-package :opencortex)
 #+end_src
 
@@ -43,7 +43,7 @@ The probabilistic engine is responsible for all neural/LLM operations. It mainta
 
 ** Backend Registry Variables
 
-#+begin_src lisp :tangle ./reason.lisp
+#+begin_src lisp :tangle (expand-file-name "reason.lisp" (concat (or (getenv "INSTALL_DIR") ".") "/harness"))
 (defvar *probabilistic-backends* (make-hash-table :test 'equal)
   "Registry mapping provider keywords (:openrouter, :ollama) to their calling functions.")
 
@@ -60,7 +60,7 @@ The probabilistic engine is responsible for all neural/LLM operations. It mainta
 
 ** register-probabilistic-backend: Backend Registration
 
-#+begin_src lisp :tangle ./reason.lisp
+#+begin_src lisp :tangle (expand-file-name "reason.lisp" (concat (or (getenv "INSTALL_DIR") ".") "/harness"))
 (defun register-probabilistic-backend (name fn)
   "Register a neural provider backend.
 
@@ -79,7 +79,7 @@ The probabilistic engine is responsible for all neural/LLM operations. It mainta
 
 ** probabilistic-call: Cascade Dispatch
 
-#+begin_src lisp :tangle ./reason.lisp
+#+begin_src lisp :tangle (expand-file-name "reason.lisp" (concat (or (getenv "INSTALL_DIR") ".") "/harness"))
 (defun probabilistic-call (prompt &key
                                 (system-prompt "You are the Probabilistic engine.")
                                 (cascade nil)
@@ -129,7 +129,7 @@ The `think` function is the heart of the probabilistic engine. It constructs a p
 
 ** strip-markdown: Clean LLM Output
 
-#+begin_src lisp :tangle ./reason.lisp
+#+begin_src lisp :tangle (expand-file-name "reason.lisp" (concat (or (getenv "INSTALL_DIR") ".") "/harness"))
 (defun strip-markdown (text)
   "Strip markdown formatting from LLM output.
 
@@ -152,7 +152,7 @@ The `think` function is the heart of the probabilistic engine. It constructs a p
 
 ** normalize-plist-keywords: Fix LLM Keyword Output
 
-#+begin_src lisp :tangle ./reason.lisp
+#+begin_src lisp :tangle (expand-file-name "reason.lisp" (concat (or (getenv "INSTALL_DIR") ".") "/harness"))
 (defun normalize-plist-keywords (plist)
   "Normalize all keys in a plist to keywords.
 
@@ -176,7 +176,7 @@ The `think` function is the heart of the probabilistic engine. It constructs a p
 
 ** think: Generate Action Proposal
 
-#+begin_src lisp :tangle ./reason.lisp
+#+begin_src lisp :tangle (expand-file-name "reason.lisp" (concat (or (getenv "INSTALL_DIR") ".") "/harness"))
 (defun think (context)
   "Generate a Lisp action proposal based on current context.
 
@@ -320,7 +320,7 @@ The deterministic engine runs all registered skills' verification functions. Thi
 
 ** deterministic-verify: Skill Chain Verification
 
-#+begin_src lisp :tangle ./reason.lisp
+#+begin_src lisp :tangle (expand-file-name "reason.lisp" (concat (or (getenv "INSTALL_DIR") ".") "/harness"))
 (defun deterministic-verify (proposed-action context)
   "Run all skill deterministic gates on a proposed action.
 
@@ -391,7 +391,7 @@ The deterministic engine runs all registered skills' verification functions. Thi
 
 ** reason-gate: The Stage Function
 
-#+begin_src lisp :tangle ./reason.lisp
+#+begin_src lisp :tangle (expand-file-name "reason.lisp" (concat (or (getenv "INSTALL_DIR") ".") "/harness"))
 (defun reason-gate (signal)
   "Stage 2 of the metabolic pipeline: Reason.
 
@@ -448,7 +448,7 @@ The deterministic engine runs all registered skills' verification functions. Thi
 These tests verify the Reason (cognitive) pipeline. Run with:
 ~(fiveam:run! 'pipeline-reason-suite)~
 
-#+begin_src lisp :tangle ./tests/pipeline-reason-tests.lisp
+#+begin_src lisp :tangle (expand-file-name "tests/pipeline-reason-tests.lisp" (concat (or (getenv "INSTALL_DIR") ".") "/harness"))
 (defpackage :opencortex-pipeline-reason-tests
   (:use :cl :fiveam :opencortex)
   (:export #:pipeline-reason-suite))