v0.6.4 - Retour onedir (configuration stable)

Changements :
- Retour a --onedir : seule configuration sans erreur DLL confirmee
- _internal/ recommite dans le repo
- build.bat restaure avec copie automatique de _internal/

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

_internal/_tcl_data/tzdata/Australia/Darwin

@@ -0,0 +1,15 @@
+# created by tools/tclZIC.tcl - do not edit
+
+set TZData(:Australia/Darwin) {
+    {-9223372036854775808 31400 0 LMT}
+    {-2364108200 32400 0 ACST}
+    {-2230189200 34200 0 ACST}
+    {-1672558200 37800 1 ACDT}
+    {-1665387000 34200 0 ACST}
+    {-883639800 37800 1 ACDT}
+    {-876123000 34200 0 ACST}
+    {-860398200 37800 1 ACDT}
+    {-844673400 34200 0 ACST}
+    {-828343800 37800 1 ACDT}
+    {-813223800 34200 0 ACST}
+}