U2025.07.20-2137: Automatic merge of T1.6-rc4-34-g041d7ab18 and 17 pull requests

- Pull request #1086 at e10390b0b: Add Settings Exporter tool (copy settings to INI, etc)
- Pull request #1091 at aa72c1338: Automatic speed control
- Pull request #1104 at 86d38a2ea: Handle simple adhesion within the axle module
- Pull request #1110 at 387388eb1: Fix Activity Runner persists after loading exception
- Pull request #1115 at 270f22fb7: Do not activate ETS switch if no suitable cars are attached
- Pull request #1120 at ba3c47fa7: Automatically Calculate Friction Values if Missing
- Pull request #1121 at 91d2d26d6: Manually Override Articulation
- Pull request #1130 at 8ae6bb7a4: Fix F9 points to an incorrect car ID.
- Pull request #1132 at 934d29e6e: Fixes For Correct Questionable Braking Parameters
- Pull request #1133 at 8dc00d587: Minor Fix for Brake Pipe Charging
- Pull request #1136 at 6f1b82f66: Fix Curve Resistance Calculation
- Pull request #1137 at c2c9e2ad5: Apply brakes at startup on minimal reduction
- Pull request #1139 at b47224d7d: Fix for bug https://bugs.launchpad.net/or/+bug/2117357. 
- Pull request #1082 at 5845a1af5: Allow variable water level in glass gauge
- Pull request #1081 at 689494b6b: Brake cuts power unification
- Pull request #1124 at fab545726: Built-in PBL2 brake controller
- Pull request #1128 at 58de4c3fc: Particle Emitter Overhaul