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/msgs/gv.msg

@@ -0,0 +1,47 @@
+# created by tools/loadICU.tcl -- do not edit
+namespace eval ::tcl::clock {
+    ::msgcat::mcset gv DAYS_OF_WEEK_ABBREV [list \
+        "Jed"\
+        "Jel"\
+        "Jem"\
+        "Jerc"\
+        "Jerd"\
+        "Jeh"\
+        "Jes"]
+    ::msgcat::mcset gv DAYS_OF_WEEK_FULL [list \
+        "Jedoonee"\
+        "Jelhein"\
+        "Jemayrt"\
+        "Jercean"\
+        "Jerdein"\
+        "Jeheiney"\
+        "Jesarn"]
+    ::msgcat::mcset gv MONTHS_ABBREV [list \
+        "J-guer"\
+        "T-arree"\
+        "Mayrnt"\
+        "Avrril"\
+        "Boaldyn"\
+        "M-souree"\
+        "J-souree"\
+        "Luanistyn"\
+        "M-fouyir"\
+        "J-fouyir"\
+        "M.Houney"\
+        "M.Nollick"\
+        ""]
+    ::msgcat::mcset gv MONTHS_FULL [list \
+        "Jerrey-geuree"\
+        "Toshiaght-arree"\
+        "Mayrnt"\
+        "Averil"\
+        "Boaldyn"\
+        "Mean-souree"\
+        "Jerrey-souree"\
+        "Luanistyn"\
+        "Mean-fouyir"\
+        "Jerrey-fouyir"\
+        "Mee Houney"\
+        "Mee ny Nollick"\
+        ""]
+}