fix: furniture interaction detection and automatic catalog offer_id rebuild

Interaction detection:
- Trust SWF-derived sit/lay/stand flags only when the logic XML actually
  contains action data (new hasActions metadata); otherwise fall back to
  keyword detection so custom furni without <action> nodes are still
  classified correctly
- Add French/Dutch/German/Spanish/Italian keywords (chaise, banquette,
  stoel, silla, sedia, stuhl, tafel, mesa, ...) to sit/lay/stand detection
  with token-boundary matching to avoid false positives like bedside_table
- Unify interaction_modes_count priority: mechanic fixed modes, then raw
  animation state count, then sit/lay fallback, then keyword default
- Detect mechanic type even when real flags are not used

Catalog integrity:
- Skip duplicate catalog_items inserts in clone and upload imports
- Re-check live catalog rows before applying generated repair SQL
- Add rebuildCatalogOfferIds() which rebuilds every catalog_items.offer_id
  from the local FurnitureData.json (matched by entry id, then classname)
  and run it after every import path (single, batch, batch-regen, clone)

src/lib/services/furni-import.ts

@@ -848,10 +848,21 @@ export async function importSingleFurni(params: {
 			: { x: 1, y: 1, z: 0 });
 	const meta = conversionResult?.metadata ?? null;
 
-	// Prefer .nitro flags, then the configured official Habbo furnidata.
-	const cansiton = meta?.cansiton ?? officialHabbo?.cansiton ?? false;
-	const canlayon = meta?.canlayon ?? officialHabbo?.canlayon ?? false;
-	const canstandon = meta?.canstandon ?? officialHabbo?.canstandon ?? false;
+	// Real sit/lay/stand flags: prefer .nitro logic flags, then the configured
+	// official Habbo furnidata. Only pass them when a real source exists —
+	// defaulted all-false values must not suppress keyword detection (custom
+	// SWFs often ship without <action> nodes even for sittable furniture).
+	const realSource = meta ?? officialHabbo;
+	const realFlags = realSource
+		? {
+				cansiton: realSource.cansiton ?? false,
+				canlayon: realSource.canlayon ?? false,
+				canstandon: realSource.canstandon ?? false,
+				// Official furnidata is curated → authoritative. SWF-derived flags
+				// are only authoritative when the logic actually had <action> nodes.
+				hasActionData: meta ? (meta.hasActions ?? true) : true,
+			}
+		: undefined;
 
 	// Derive interaction_type. Priority:
 	//   1. Wired LOGIC items (wf_act_/wf_trg_/wf_cnd_/wf_slc_/wf_xtra_/wf_var_)
@@ -903,9 +914,7 @@ export async function importSingleFurni(params: {
 		// no .nitro JSON available — keyword fallback only
 	}
 	const autoInteraction = autoDetectInteraction(classname, bestName, {
-		cansiton,
-		canlayon,
-		canstandon,
+		...realFlags,
 		logicType,
 		animationStates: nitroAnimationStatesCount(nitroJsonForModes),
 	});
@@ -929,9 +938,9 @@ export async function importSingleFurni(params: {
 		const update = buildItemsBaseEnrichmentUpdate({
 			id: spriteId,
 			dims,
-			cansiton,
-			canlayon,
-			canstandon,
+			cansiton: autoInteraction.canSit,
+			canlayon: autoInteraction.canLay,
+			canstandon: autoInteraction.canStand,
 			allowStack,
 			interactionType,
 			interactionModesCount,
@@ -1123,6 +1132,8 @@ export async function verifyAndFixInteractionModesCount(): Promise<{
 				cansiton: realFlags.cansiton,
 				canlayon: realFlags.canlayon,
 				canstandon: realFlags.canstandon,
+				// Furnidata flags are curated → authoritative over keywords.
+				hasActionData: true,
 				animationStates: animationModes,
 			});