Add lower-corner layouts, custom blur backgrounds, and classic blur fill.

Ship composition families, optional background images for lower-corner templates, and an optional blurred cover fill for classic letterbox.

worker/index.ts

@@ -70,21 +70,25 @@ async function processJobItem(data: VideoJobData) {
       includeWatermark: item.includeWatermark,
       songTitle: item.songTitle || item.title,
       artist: item.artist,
-      layout: item.layoutTemplate
-        ? {
-            template: item.layoutTemplate as
+      layout: {
+            template: (item.layoutTemplate as
               | "COVER_LEFT_TEXT_RIGHT"
               | "COVER_TOP_TEXT_BOTTOM"
               | "COVER_RIGHT_TEXT_LEFT"
-              | "CENTERED_COMPACT",
+              | "CENTERED_COMPACT"
+              | "LOWER_LEFT_COVER_TEXT"
+              | "LOWER_RIGHT_COVER_TEXT"
+              | null) ?? null,
+            blurFill: item.blurFill ?? false,
             blurAmount: item.blurAmount ?? 55,
             blurOpacity: item.blurOpacity ?? 100,
             textPadding: item.textPadding ?? 48,
             titleArtistGap: item.titleArtistGap ?? 10,
+            titleBold: item.titleBold ?? true,
             textOffsetX: item.textOffsetX ?? 0,
             textOffsetY: item.textOffsetY ?? 0,
-          }
-        : null,
+          },
+      backgroundImagePath: item.backgroundImagePath,
       watermark: {
         mode: (item.watermarkMode as "none" | "default" | "text" | "logo") || "default",
         text: item.watermarkText,