fix: six maintenance fixes across LAUNCH.bat, config, go.mod, and gitignore

- LAUNCH.bat (root + usb): add :server_launch fast-path so server always
  starts even when Go is not found; only obfuscation tools are skipped
- LAUNCH.bat (root + usb): fix misleading echo -- credentials are printed
  by AetherForge.exe itself, not by the batch script
- usb/data/config.json: correct SupportXMR TLS port (3333->443) and add
  MoneroOcean and HeroMiners backup pool entries
- server/go.mod: bump go directive from 1.25.0 to 1.26.3 to match bundled
  toolchain version used by LAUNCH.bat and pack-usb.bat
- pack-usb.bat: replace four Unicode em-dash characters (U+2014) with plain
  ASCII hyphens to avoid garbled output on non-UTF-8 code pages
- .gitignore: add _err.txt, _out.txt, and _*.txt pattern to suppress
  recurring untracked temp debug files in repo root

pack-usb.bat

@@ -1,17 +1,17 @@
 @echo off
 setlocal EnableExtensions EnableDelayedExpansion
-title AetherForge — Pack USB
+title AetherForge - Pack USB
 cd /d "%~dp0"
 set "ROOT=%CD%"
 set "USB=%ROOT%\usb"
 
 echo.
 echo  ================================================================
-echo       AetherForge  —  Pack Portable USB
+echo       AetherForge  -  Pack Portable USB
 echo  ================================================================
 echo.
 echo  Assembles a self-contained copy in:  %USB%\
-echo  Copy that entire folder to a USB drive — nothing else needed.
+echo  Copy that entire folder to a USB drive - nothing else needed.
 echo.
 
 :: ----------------------------------------------------------------
@@ -58,7 +58,7 @@ if not exist "%GO_PACK%" (
 if exist "%USB%\toolchain\go\bin\go.exe" (
     echo   [0/8] Go toolchain ready in usb\toolchain\go\
 ) else (
-    echo   [0/8] WARNING: Go not bundled — LAUNCH.bat will extract from pack zip on first run.
+    echo   [0/8] WARNING: Go not bundled - LAUNCH.bat will extract from pack zip on first run.
 )
 
 :: ----------------------------------------------------------------