feat(v0.2.0): finalize autonomous self-editing foundation

- Hardened actuators: Fixed path-traversal vulnerabilities in file I/O tools and blocked .org files from regex replacements to force AST usage. Enforced Merkle snapshots on AST edits.
- Implemented Reflection Loops: Injected rejection traces from deterministic gates back into the LLM context to enable autonomous self-correction.
- Finalized tool permission tiers (ask/allow/deny) with proper LLM prompt filtering.

skills/org-skill-emacs-edit.org

@@ -184,6 +184,7 @@ Write AST back to file preserving structure.
 (defun emacs-edit-write-file (file-path ast)
   "Writes AST back to FILE-PATH, preserving org structure.
 Clears cache after write."
+  (opencortex::snapshot-memory)
   (let ((org-text (emacs-edit-ast-to-org ast)))
     (with-open-file (out file-path :direction :output :if-exists :supersede)
       (write-string org-text out)))