v0.6.0 - Ajout _internal pour fix erreur DLL

Changements :
- Ajout du dossier _internal/ (DLL Python generees par PyInstaller --onedir)
- Resout l'erreur "Failed to load Python DLL" : plus d'extraction dans %TEMP%
- build.bat copie automatiquement _internal/ a la racine apres chaque build
- _internal/ a re-committer uniquement si la version de Python change

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

_internal/_tcl_data/msgs/pt_br.msg

@@ -0,0 +1,7 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset pt_BR DATE_FORMAT "%d-%m-%Y"
+    ::msgcat::mcset pt_BR TIME_FORMAT "%T"
+    ::msgcat::mcset pt_BR TIME_FORMAT_12 "%T"
+    ::msgcat::mcset pt_BR DATE_TIME_FORMAT "%a %d %b %Y %T %z"
+}