updated skills

plugins/document-navigator/docs/media/audio-fx/audio-fx-plugin-flanger/src/flanger/flanger.md

@@ -62,7 +62,7 @@ await jet.setup(
 
 The delay line is a circular `Float32Array` per channel sized for `MAX_DELAY_MS = 20 ms` plus a 4-sample safety margin (the fractional read indexes `i0` and `i0 + 1`). Twenty milliseconds is well over `baseDelay.max + 2·depth.max = 10 + 10 = 20`, with the extra margin so the wrap path is never hit on the hottest combination of parameters.
 
-The LFO is mapped to the delay tap via `delay = base + (sin + 1)/2 · depth`, not `delay = base + sin · depth`. Mapping to the half-positive range `[0, depth]` means the flange always *adds* delay to the base — never *subtracts* — so the line never reads near `writeIndex - 0` (which would wrap aliased noise into the output). It also matches the standard convention used by most reference flanger plugins so the perceptual sweep direction is what producers expect.
+The LFO is mapped to the delay tap via `delay = base + (sin + 1)/2 · depth`, not `delay = base + sin · depth`. Mapping to the half-positive range `[0, depth]` means the flange always _adds_ delay to the base — never _subtracts_ — so the line never reads near `writeIndex - 0` (which would wrap aliased noise into the output). It also matches the standard convention used by most reference flanger plugins so the perceptual sweep direction is what producers expect.
 
 Feedback at the comb-filter resonance is intentionally allowed to climb to 0.95 because the flanger character lives at the resonance edge. The test "max feedback over a long sine never produces non-finite samples" exercises this boundary against a one-second sine at `feedback = 0.95` and verifies every output sample is finite and amplitude-bounded. Allowing `1.0` would create a marginally stable system whose output diverges for any non-zero input; clamping at 0.95 leaves enough headroom that even a noise-floor leak stays bounded over arbitrarily long renders.