v1.1 — Improved metering, transformer, and optical cell tuning

- Needle VU meters with spring-mass-damper physics (analog inertia)
- Swappable meter modes: GR needles + input bars, or input needles + GR bars
- GR bar meters fill right-to-left (0dB=empty, -30dB=full)
- Input bar meters fill left-to-right with green color
- Optical cell: normalized parameters (eta=50) for proper audio-level response
- Transformer: removed 3-band crossover artifacts, simplified waveshaping with dry/wet mix
- Nickel/Iron/Steel with distinct but subtle harmonic character
- Layout: optical left, discrete right, meters center, transformer+output bottom center

CMakeLists.txt

@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.22)
-project(InstaShadow VERSION 1.0.0)
+project(InstaShadow VERSION 1.1.0)
 
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)