U2025.10.19-0437: Automatic merge of T1.6-139-g6b62c2a7d and 14 pull requests

- Pull request #1082 at 853817063: Allow variable water level in glass gauge
- Pull request #1156 at f46d5f27f: Fix incorrectly disabled options in train operations window
- Pull request #1091 at 492795a4d: Automatic speed control
- Pull request #1122 at 73c47b4cf: Wagon Size and Centering Controls
- Pull request #1124 at e241a0d12: Built-in PBL2 brake controller
- Pull request #1128 at d116396bf: Particle Emitter Overhaul
- Pull request #1157 at 39cd994e1: Dynamic brake authorization by TCS
- Pull request #1159 at 48c9a630f: Skip OR warnings about TSRE-specific token Ruler
- Pull request #1163 at 2f9e292dd: Fix: Crash when using Camera 8 and F9.
- Pull request #1164 at 1ad9889f7: Fix: F9 crashes with a front coupled single steam locomotive by Csantucci.
- Pull request #1166 at 51e7f7aaf: Simplify loading of internal and game textures
- Pull request #1167 at 115325f94: Fix: RunActivity slow to terminate because of long sleep in Host Process
- Pull request #1168 at 6e2942ff5: Fix exception when exiting with MapForm or SoundDebugForm open.
- Pull request #1169 at 8c1d787e9: Better Handling of Wagons with Invalid Bogie Configuration