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/volume/efi/efi.pine

@@ -0,0 +1,47 @@
+// The MIT License (MIT)
+// © mihakralj
+//@version=6
+indicator("Elder's Force Index (EFI)", "EFI", overlay=false)
+
+//@function Calculates Elder's Force Index (EFI), measuring buying and selling pressure through price change and volume
+//@doc https://github.com/mihakralj/pinescript/blob/main/indicators/volume/efi.md
+//@param len Lookback period for EMA smoothing (default: 13)
+//@param src Source price for calculation (default: built-in close)
+//@param src_vol The volume (default: built-in volume)
+//@returns float The smoothed Force Index value
+efi(len = 13, src = close, src_vol = volume) =>
+    if len < 1
+        runtime.error("Length must be >= 1")
+    var float prev_src = src
+    float raw_force = (nz(src) - nz(prev_src)) * nz(src_vol)
+    prev_src := src
+    float a = 2.0 / (len + 1.0)
+    float beta = 1.0 - a
+    var float ema = na
+    var float result = na
+    var float e = 1.0
+    var bool warmup = true
+    if na(ema)
+        ema := 0
+        result := raw_force
+    else
+        ema := a * (raw_force - ema) + ema
+        if warmup
+            e *= beta
+            float c = 1.0 / (1.0 - e)
+            result := c * ema
+            if e <= 1e-10
+                warmup := false
+        else
+            result := ema
+    result
+
+
+// ---------- Inputs ----------
+i_length = input.int(13, "Length", minval=1)
+
+// ---------- Calculations ----------
+efi_val = efi(i_length)
+
+// ---------- Plotting ----------
+plot(efi_val, "EFI", color=color.yellow, linewidth=2)