migrate to root dir

lib/pipeline/config.ts

@@ -0,0 +1,67 @@
+import * as yaml from "js-yaml";
+import * as fs from "fs";
+import * as path from "path";
+import { z } from "zod";
+
+export interface StoryConfig {
+  metadata: {
+    title: string;
+    author: string;
+    publication_year: number;
+    public_domain_proof_url: string;
+    reading_level: string;
+  };
+  config: {
+    chunk_size: number;
+    tts_voice_id: string;
+    tts_instructions?: string;
+    image_style_prompts?: string;
+    intro_audio_file: string;
+    outro_audio_file: string;
+    background_music_file: string;
+    export_settings: {
+      format?: string;
+      resolution: string;
+    };
+  };
+}
+
+const StoryConfigSchema = z.object({
+  metadata: z.object({
+    title: z.string().min(1),
+    author: z.string().min(1),
+    publication_year: z.number().int(),
+    public_domain_proof_url: z.string().min(1),
+    reading_level: z.string().min(1),
+  }),
+  config: z.object({
+    chunk_size: z.number().int().positive(),
+    tts_voice_id: z.string().min(1),
+    tts_instructions: z.string().optional().default(""),
+    image_style_prompts: z.string().optional().default(""),
+    intro_audio_file: z.string().min(1),
+    outro_audio_file: z.string().min(1),
+    background_music_file: z.string().min(1),
+    export_settings: z
+      .object({
+        format: z.string().optional().default("mp4"),
+        resolution: z
+          .string()
+          .regex(/^\d+x\d+$/)
+          .default("1024x1024"),
+      })
+      .default({ format: "mp4", resolution: "1024x1024" }),
+  }),
+});
+
+export function loadStoryConfig(storyName: string): StoryConfig {
+  const configPath = path.join("stories", storyName, "config.yaml");
+  if (!fs.existsSync(configPath)) {
+    throw new Error(`Configuration file not found for story: ${storyName}`);
+  }
+
+  const fileContents = fs.readFileSync(configPath, "utf8");
+  const loaded = yaml.load(fileContents);
+  const parsed = StoryConfigSchema.parse(loaded);
+  return parsed as unknown as StoryConfig;
+}