Auto-migrate ตอน container start (แทนการ push มือ)

- scripts/migrate.mjs: สร้าง database ถ้ายังไม่มี + apply ไฟล์
  drizzle/*.sql ที่ยังไม่อยู่ในตาราง _migrations (ทีละไฟล์ใน
  transaction, แยก statement ด้วย --> statement-breakpoint)
  — เจอ schema ที่สร้างไว้ก่อนแล้ว (42P07/42710/42701) ถือว่า applied
- web.Dockerfile: ฝัง drizzle/ + scripts/ ใน image,
  CMD รัน migrate ก่อน node server.js
- .dockerignore: เอา drizzle ออก (ต้องขึ้น image)
- commit ไฟล์ migration แรก drizzle/0000 (จาก drizzle-kit generate)

ทดสอบบน PostgreSQL 17 แล้ว 3 เคส: สร้างใหม่ / รันซ้ำ / schema
มีอยู่ก่อนแบบไม่มี _migrations (เคส server ปัจจุบัน) — ผ่านทั้งหมด

Co-Authored-By: Claude Code <noreply@anthropic.com>

drizzle/0000_narrow_quentin_quire.sql

@@ -0,0 +1,64 @@
+CREATE TYPE "public"."annotation_type" AS ENUM('HIGHLIGHT', 'DRAW', 'COMMENT', 'SHAPE', 'REDACTION', 'TEXTBOX', 'STAMP');--> statement-breakpoint
+CREATE TABLE "annotation_replies" (
+	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
+	"annotation_id" uuid NOT NULL,
+	"user_id" text NOT NULL,
+	"user_name" text NOT NULL,
+	"message" text NOT NULL,
+	"created_at" timestamp with time zone DEFAULT now() NOT NULL
+);
+--> statement-breakpoint
+CREATE TABLE "annotation_versions" (
+	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
+	"annotation_id" uuid NOT NULL,
+	"file_id" uuid NOT NULL,
+	"page_index" integer NOT NULL,
+	"user_id" text NOT NULL,
+	"user_name" text NOT NULL,
+	"type" "annotation_type" NOT NULL,
+	"data" jsonb NOT NULL,
+	"kind" text NOT NULL,
+	"created_at" timestamp with time zone DEFAULT now() NOT NULL
+);
+--> statement-breakpoint
+CREATE TABLE "annotations" (
+	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
+	"file_id" uuid NOT NULL,
+	"page_index" integer NOT NULL,
+	"user_id" text NOT NULL,
+	"user_name" text NOT NULL,
+	"type" "annotation_type" NOT NULL,
+	"data" jsonb NOT NULL,
+	"created_at" timestamp with time zone DEFAULT now() NOT NULL,
+	"updated_at" timestamp with time zone DEFAULT now() NOT NULL,
+	"resolved" boolean DEFAULT false NOT NULL,
+	"resolved_at" timestamp with time zone
+);
+--> statement-breakpoint
+CREATE TABLE "bookmarks" (
+	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
+	"file_id" uuid NOT NULL,
+	"page_index" integer NOT NULL,
+	"user_id" text NOT NULL,
+	"title" text NOT NULL,
+	"parent_id" uuid,
+	"note" text,
+	"y_offset" double precision NOT NULL,
+	"created_at" timestamp with time zone DEFAULT now() NOT NULL
+);
+--> statement-breakpoint
+CREATE TABLE "files" (
+	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
+	"title" text NOT NULL,
+	"description" text,
+	"pdf_url" text NOT NULL,
+	"created_at" timestamp with time zone DEFAULT now() NOT NULL
+);
+--> statement-breakpoint
+ALTER TABLE "annotation_replies" ADD CONSTRAINT "annotation_replies_annotation_id_annotations_id_fk" FOREIGN KEY ("annotation_id") REFERENCES "public"."annotations"("id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE "annotation_versions" ADD CONSTRAINT "annotation_versions_file_id_files_id_fk" FOREIGN KEY ("file_id") REFERENCES "public"."files"("id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE "annotations" ADD CONSTRAINT "annotations_file_id_files_id_fk" FOREIGN KEY ("file_id") REFERENCES "public"."files"("id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE "bookmarks" ADD CONSTRAINT "bookmarks_file_id_files_id_fk" FOREIGN KEY ("file_id") REFERENCES "public"."files"("id") ON DELETE cascade ON UPDATE no action;--> statement-breakpoint
+CREATE INDEX "annotation_replies_annotation_idx" ON "annotation_replies" USING btree ("annotation_id");--> statement-breakpoint
+CREATE INDEX "annotation_versions_file_idx" ON "annotation_versions" USING btree ("file_id");--> statement-breakpoint
+CREATE INDEX "annotations_file_page_idx" ON "annotations" USING btree ("file_id","page_index");