feat: auto interaction detection from real furniture data

Replace classname/name keyword guessing with real data so sit/lay/stand
has zero false positives:
- autoDetectInteraction() now accepts real flags (cansiton/canlayon/
  canstandon), logicType, and animation-state count; real data wins and
  keywords are only a fallback when no real data exists.
- New furni-real-interaction helper reads the local FurnitureData.json
  (highest-revision entries win; a true flag in any duplicate is kept)
  and falls back to the official Habbo furnidata.
- interaction_modes_count now uses emulator conventions: dice=6,
  gate/teleport=2, roller=1, generic multistate = animation-state count,
  chairs/beds=1, plain items=0.
- verifyAndFixInteractionModesCount only touches items with real data
  and skips everything else (no keyword overwrites).
- parseNitroBundle falls back to gunzip for gzip-compressed .nitro files.
- Wired through furni-import, upload-import, clone-import, and the nitro
  editor auto-detect button.

src/lib/services/upload-import.ts

@@ -15,6 +15,7 @@ import {
 	IMPORTED_PAGE_CAPTION,
 	IMPORTED_PAGE_CAPTION_SAVE,
 } from "@/lib/services/furni-import";
+import { nitroAnimationStatesCount } from "@/lib/services/furni-real-interaction";
 import { parseNitroBundle } from "@/lib/services/swf/nitro-builder";
 
 export interface UploadResult {
@@ -330,8 +331,15 @@ export async function uploadSingleFurni(params: {
 
 	const price = autoPriceFurni(classname);
 
-	// Auto-detect interaction modes count from classname/name
-	const autoInteraction = autoDetectInteraction(classname, name);
+	// Auto-detect interaction modes count. Real flags + .nitro animation
+	// states win over keyword guessing — no false positives.
+	const autoInteraction = autoDetectInteraction(classname, name, {
+		cansiton,
+		canlayon,
+		canstandon,
+		logicType: (nitroMeta?.logicType as string) || undefined,
+		animationStates: nitroAnimationStatesCount(nitroMeta),
+	});
 	const interactionModesCount = autoInteraction.interactionModesCount;
 
 	let newId: number;