FPS Tune (Particle + Weather Optimizer)

- 🧭 New settings page. It's split into tabs, uses plain wording and explains each trade-off you'll see in game.
- 🎚️ Profiles. Choose Balanced, Smoother frames, Maximum FPS or More particles. If you change any setting yourself, the profile shows as Custom.
- 🔄 Adaptive is its own switch, so you can use it with any profile.
- 📊 Live particle limit. The cap now updates in real time.
- 📏 One distance setting. A single distance controls how far particles are kept.
- 🌧️ Weather mode. Choose Vanilla, Lighter or Off rain and snow.
- ⌨️ F6 feedback. Pressing F6 now shows a message confirming what changed.
- 🎨 Every setting has its own icon, so the settings pages look consistent.
- 🔁 Fixed: the profile button no longer gets stuck on "More particles" and cycles through every profile.
- ⎋ Escape now saves your changes, like vanilla option screens. Use Cancel to discard them.
- 👁️ Fixed: particle distance is now measured from the camera, so it stays correct in third person and spectator view.
- ⚙️ Old config files are upgraded to the new format automatically.
- 📦 Targets: Minecraft 26.3 Fabric, 1.21.11 Fabric and 1.21.11 NeoForge.
- 🧪 NeoForge 26.3 is still a preview and will follow once NeoForge releases a stable 26.3 build.