MinIO設定をCoolify対応に整備し、bucket自動作成を追加

compose:
- MinIOにヘルスチェック(mc ready)を追加し、api/workerはhealthyを待つように変更
- 全認証情報を${VAR:-default}でパラメータ化し、Coolifyの環境変数/シークレットで上書き可能に
- MINIO_SERVER_URL / MINIO_BROWSER_REDIRECT_URL でリバースプロキシ背後の公開URLに対応
- workerの依存先をapiからpostgres+minioに修正し、起動順序のデッドロックを解消

API:
- S3StorageにensureBucket()を追加(HeadBucket→なければCreateBucket、冪等)
- runtime起動時にbucketを自動作成し、minio-init依存を必須ではなくした

.env.exampleにMinIO関連変数を追記

apps/api/src/storage.ts

@@ -5,9 +5,11 @@ import { dirname, normalize, relative, resolve } from "node:path";
 import { pipeline } from "node:stream/promises";
 import { Readable } from "node:stream";
 import {
+  CreateBucketCommand,
   CompleteMultipartUploadCommand,
   CreateMultipartUploadCommand,
   GetObjectCommand,
+  HeadBucketCommand,
   HeadObjectCommand,
   PutObjectCommand,
   S3Client,
@@ -35,6 +37,7 @@ export interface StorageAdapter {
   downloadToFile(key: string, filePath: string): Promise<void>;
   getObject(key: string): Promise<StoredObject | null>;
   headObject(key: string): Promise<{ sizeBytes: number; contentType: string } | null>;
+  ensureBucket?(): Promise<void>;
 }
 
 function contentTypeForPath(path: string) {
@@ -126,6 +129,26 @@ export class S3Storage implements StorageAdapter {
     });
   }
 
+  // Idempotently create the configured bucket so the service is self-contained
+  // and does not depend on an external init step (e.g. a separate minio-init
+  // container) before it can store objects. Safe to call on every startup.
+  async ensureBucket() {
+    const bucket = this.appConfig.S3_BUCKET;
+    try {
+      await this.client.send(new HeadBucketCommand({ Bucket: bucket }));
+      return;
+    } catch (error: any) {
+      const notFound = error?.$metadata?.httpStatusCode === 404 || error?.name === "NotFound" || error?.name === "NoSuchBucket";
+      if (!notFound) {
+        // Re-throw unexpected errors (auth, network) so they surface loudly.
+        throw error;
+      }
+    }
+    // us-east-1 / "auto" regions must NOT send a LocationConstraint.
+    await this.client.send(new CreateBucketCommand({ Bucket: bucket }));
+  }
+
+
   async createUploadPlan(key: string, contentType: string, sizeBytes: number) {
     const partSizeBytes = 16 * 1024 * 1024;
     const partCount = Math.ceil(sizeBytes / partSizeBytes);