v1.1.2: More FIR latency options, lower default

FIR quality selector now offers 6 choices:
512 (~6ms), 1024 (~12ms), 2048 (~23ms), 4096 (~46ms), 8192 (~93ms), 16384 (~186ms)
Default changed to 2048 (~23ms) for lower latency.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Source/FIREngine.h

@@ -5,7 +5,7 @@
 class FIREngine : private juce::Thread
 {
 public:
-    static constexpr int defaultFFTOrder = 13;  // 8192 taps
+    static constexpr int defaultFFTOrder = 11;  // 2048 taps
     static constexpr int maxBands = 8;
 
     FIREngine();