SIMD Refactor: Merge simd-dev into dev (#55)

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
Co-authored-by: aider (openrouter/anthropic/claude-sonnet-4) <aider@aider.chat>
Co-authored-by: Warp <agent@warp.dev>

lib/oscillators/dpo/dpo.pine

@@ -0,0 +1,38 @@
+// The MIT License (MIT)
+// © mihakralj
+//@version=6
+indicator("Detrended Price Oscillator (DPO)", "DPO", overlay=false)
+
+//@function Calculates Detrended Price Oscillator (DPO) by removing trend component from price
+//@doc https://github.com/mihakralj/pinescript/blob/main/indicators/oscillators/dpo.md
+//@param source Series to calculate DPO from
+//@param period Period for SMA calculation and displacement
+//@returns DPO value (current price - displaced SMA)
+dpo(series float source, simple int period) =>
+    if period <= 0
+        runtime.error("Period must be greater than 0")
+    int displacement = math.floor(period / 2) + 1
+    float sum = 0.0
+    for i = 0 to period - 1
+        sum += nz(source[i], source)
+    float sma = sum / period
+    float currentPrice = source
+    float displacedSMA = sma[displacement]
+    float result = na
+    if not na(displacedSMA)
+        result := currentPrice - displacedSMA
+    
+    result
+
+// ---------- Main loop ----------
+
+// Inputs
+i_source = input.source(close, "Source")
+i_period = input.int(20, "Period", minval=1)
+
+// Calculation
+dpo_value = dpo(i_source, i_period)
+
+// Plot
+plot(dpo_value, "DPO", color=color.yellow, linewidth=2)
+hline(0, "Zero Line", color.gray, hline.style_dotted)