PSF: Update privacy wall mandate to use @personal tag instead of !personal

notes/org-skill-scribe.org

@@ -16,7 +16,7 @@ Define automated distillation, enrichment, and auditing behaviors.
 
 ** 2. User Needs
 - *Knowledge Distillation:* Weekly scan of ~daily/~ files to extract evergreen concepts.
-- *Privacy Mandate:* NEVER process subtrees with the ~!personal~ tag. (LLM exclusion).
+- *Privacy Mandate:* NEVER process subtrees with the ~@personal~ tag. (LLM exclusion).
 - *Content Enrichment (Karpathy Method):*
   1. Cross-linking to existing notes.
   2. Merging redundant concepts.
@@ -59,10 +59,10 @@ Uses a weekly heartbeat trigger. Employs a "Compiler" approach: System 1 (Neuro)
 ** Pre-Filtering (The Privacy Wall)
 #+begin_src lisp :tangle ../projects/org-skill-scribe/src/scribe-engine.lisp
 (defun scribe-filter-personal (org-ast-node)
-  "Recursively strips out any headline or content tagged with !personal.
+  "Recursively strips out any headline or content tagged with @personal.
    This runs strictly in System 2 BEFORE any data is passed to System 1."
   (let ((tags (getf (org-agent:org-object-attributes org-ast-node) :TAGS)))
-    (when (not (member "!personal" tags :test #'string=))
+    (when (not (member "@personal" tags :test #'string=))
       org-ast-node)))
 #+end_src