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/te_in.msg

@@ -0,0 +1,8 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset te_IN AM "\u0c2a\u0c42\u0c30\u0c4d\u0c35\u0c3e\u0c39\u0c4d\u0c28"
+    ::msgcat::mcset te_IN PM "\u0c05\u0c2a\u0c30\u0c3e\u0c39\u0c4d\u0c28"
+    ::msgcat::mcset te_IN DATE_FORMAT "%d/%m/%Y"
+    ::msgcat::mcset te_IN TIME_FORMAT_12 "%I:%M:%S %P"
+    ::msgcat::mcset te_IN DATE_TIME_FORMAT "%d/%m/%Y %I:%M:%S %P %z"
+}