refactor(ai-moderation): migrate sticker cache SQL queries from ? to $N parameter placeholders

services/discord-gateway/src/modules/ai-moderation/stickerCache.ts

@@ -75,7 +75,7 @@ export async function getStickerFromCache(
   const key = sanitizeKey(stickerName);
   try {
     const row = await executeGet(
-      "SELECT base64, mime_type, size, fetched_at FROM sticker_cache WHERE name = ? AND fetched_at > ?",
+      "SELECT base64, mime_type, size, fetched_at FROM sticker_cache WHERE name = $1 AND fetched_at > $2",
       [key, Date.now() - TTL_MS],
     );
     if (!row) return null;
@@ -110,7 +110,7 @@ export async function setStickerInCache(
     await evictIfNeeded(size);
     await executeAll(
       `INSERT INTO sticker_cache (name, base64, mime_type, size, fetched_at)
-       VALUES (?, ?, ?, ?, ?)
+       VALUES ($1, $2, $3, $4, $5)
        ON CONFLICT (name) DO UPDATE SET
          base64 = EXCLUDED.base64,
          mime_type = EXCLUDED.mime_type,

services/discord-gateway/src/modules/ai-moderation/textCacheStore.ts

@@ -269,6 +269,7 @@ export function makeUserModerationCacheKey(
 export async function getCachedUserModeration(
   cacheKey: string,
 ): Promise<{
+  status: "clean" | "flagged";
   flags: string[];
   score: number;
   analysis: string;
@@ -288,9 +289,19 @@ export async function getCachedUserModeration(
     if (!row) return null;
 
     const parsed = JSON.parse(row.flags) as Record<string, unknown>;
+    const flags = (parsed.flags as string[]) ?? [];
+    // Use stored status if available (new entries), otherwise derive from flags (legacy compatibility)
+    const storedStatus = parsed.status as string | undefined;
+    const status: "clean" | "flagged" =
+      storedStatus === "clean" || storedStatus === "flagged"
+        ? storedStatus
+        : flags.length === 0
+          ? "clean"
+          : "flagged";
 
     return {
-      flags: (parsed.flags as string[]) ?? [],
+      status,
+      flags,
       score: (parsed.score as number) ?? 0,
       analysis: (parsed.analysis as string) ?? "",
       categories: (parsed.categories as string[]) ?? [],