fix(lint): satisfy react-hooks immutability + set-state-in-effect rules

The new react-compiler-aware lint rules flag legitimate Three.js
external-system synchronizations (texture/uniform/AnimationAction
mutations) and a derived-state reset in PylonDownedPylon. None of
these are bugs — they're the canonical way to bridge React state
with imperative graphics objects — so they're annotated with
targeted eslint-disable comments and a small reorder.

- EbikeGPSMap: disable on uniform/texture sync effects
- EbikeSpeedmeter: disable around the canvas+texture useFrame sync
- PylonFarmerNPC: disable around playAnim (drei AnimationAction
  fadeIn/fadeOut/setLoop/clampWhenFinished) and the effects/frame
  callbacks that invoke it
- PylonDownedPylon: move showUpright/isPylonInteractive declarations
  above the useFrame that reads them (fixes access-before-declared)
  and disable set-state-in-effect on the per-step isRaised reset

src/components/ebike/EbikeSpeedmeter.tsx

@@ -123,6 +123,8 @@ export function EbikeSpeedmeter({
   );
 
   // ── Frame loop ──────────────────────────────────────────────────────────────
+  /* External Three.js canvas+texture sync — intentional side effects in useFrame. */
+  /* eslint-disable react-hooks/immutability */
   useFrame((_, delta) => {
     // 1. Smooth speed factor
     const target = THREE.MathUtils.clamp(window.ebikeSpeedFactor ?? 0, 0, 1);
@@ -181,6 +183,7 @@ export function EbikeSpeedmeter({
     }
 
     fillTexture.needsUpdate = true;
+    /* eslint-enable react-hooks/immutability */
   });
 
   return (