feat(core,studio): the character presets pitch shift unlocks

Chipmunk, Giant, and Monster ship as presets on the pitchshift worklet
P1 added: Chipmunk pitches up and adds sparkle, Giant pitches down with
weight and a compressor to hold the extra low end together, Monster pitches
down further with saturation growl and a close, tight reverb. Every param
verified against the live effect registry rather than sketched — the
compressor/reverb/saturate/shelf keys all match exactly.

Each gets its own title treatment (font, size, tracking, hue) so the FX
rack's per-preset styling coverage and hue-distance/background-uniqueness
tests extend cleanly to the three new entries, and complaint-line copy in
the non-voice vocabulary the audit test enforces (no speech words — "Giant"
over CapCut's "Deep Voice", as the design doc records).

Updates plans/audio-fx-presets.md's two limits paragraphs to record that
pitch shift landed and this half of the character list now ships; Robot and
Alien stay out of scope (ring modulation, still unbuilt).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

packages/studio/src/components/editor/propertyPanelFxPresetStyle.ts

@@ -150,6 +150,24 @@ export const FX_PRESET_STYLE: Record<string, FxPresetStyle> = {
     color: "hsl(288, 85%, 72%)",
     family: FACE.theatrical,
   },
+  // Small, fast and squeaky — tight and bright, nothing about it sits still.
+  chipmunk: {
+    type: "text-[12px] font-black uppercase tracking-tighter",
+    color: "hsl(54, 88%, 66%)",
+    family: FACE.geometric,
+  },
+  // Huge and slow — the biggest size here, set on a face bolted to a monument.
+  giant: {
+    type: "text-[18px] font-black tracking-[0.02em]",
+    color: "hsl(250, 72%, 68%)",
+    family: FACE.engraved,
+  },
+  // Rough and too close — heavy industrial caps, growled rather than shouted.
+  monster: {
+    type: "text-[15px] font-black uppercase tracking-[0.05em]",
+    color: "hsl(350, 78%, 64%)",
+    family: FACE.condensed,
+  },
 
   // --- space: rooms. Light and wide, because that is what space looks like ---
   "room-tight": {