Refactor wave simulation for performance optimizations and enhance obstacle handling also change to 9-point Laplacian

- from 5 to 9-point Laplacian
- sin() LUT
- Double-buffer with index toggle
- Branchless obstacles: Multiplier grid eliminates branch mispredictions
- Core/Edge split: SIMD-friendly inner loop + bounds-checked edge ring
- Render decoupling: Physics substeps run independently from 60Hz rendering

Author: Ciwiruk

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "symulacja_fali"
-version = "1.1.2-beta"
+version = "1.1.3-beta"
 edition = "2024"
 
 [dependencies]
@@ -14,3 +14,8 @@ rfd = "0.17.2"
 
 [target.'cfg(windows)'.dependencies]
 windows = { version = "0.62.2", features = ["Win32_System_ProcessStatus", "Win32_System_Threading", "Win32_Foundation"] }
+
+[profile.dev]
+opt-level = 3
+lto = true
+codegen-units = 1