feat(seed): ~5x richer demo data via deterministic generators

Rewrite scripts/seed-demo.ts as a thin orchestrator over a new scripts/seed/ module (rng, pools, helpers, content, schedule, logs, generators). Scales demo data from 6 users/3 projects to ~30 users/15 projects with ~5-8x per-table content (~6.8x total rows) via a seeded mulberry32 PRNG for full reproducibility (incl. bcrypt salts and file/URL identifiers). FK-safe ordering, real captured IDs for activity logs, enum pools typed against lib/types. Preserves canonical login credentials and projects.

scripts/seed/helpers.ts

@@ -0,0 +1,170 @@
+/**
+ * シード生成器間で共有する定数・時刻ヘルパ・挿入ヘルパ・カノニカルデータ。
+ */
+import type { SqliteDatabase } from '@/lib/db/sqlite';
+import type { ProjectMemberRole } from '@/lib/types';
+import { type Rng } from './rng';
+
+export const BCRYPT_ROUNDS = 10;
+export const SEED = 0xc0ffee;
+export const TARGET_USERS = 30;
+export const TARGET_PROJECTS = 15;
+
+// 実行日(UTC 0時)を基準にすることで、同日内の再実行で同一データになる。
+const BASE_DATE = (() => {
+  const d = new Date();
+  d.setUTCHours(0, 0, 0, 0);
+  return d;
+})();
+const BASE_TIME = BASE_DATE.toISOString();
+export const now = (): string => BASE_TIME;
+export const daysFromNow = (d: number): string => {
+  const dt = new Date(BASE_DATE);
+  dt.setUTCDate(dt.getUTCDate() + d);
+  return dt.toISOString();
+};
+export const dayStr = (d: number): string => daysFromNow(d).slice(0, 10);
+
+export const PNG_BYTES = Buffer.from(
+  'iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNkYAAAAAYAAjCB0C8AAAAASUVORK5CYII=',
+  'base64'
+);
+
+const BCRYPT_SALT_ALPHABET =
+  './ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
+
+export function bcryptSalt(rng: Rng): string {
+  let salt = '';
+  for (let i = 0; i < 22; i++) {
+    salt +=
+      BCRYPT_SALT_ALPHABET[Math.floor(rng() * BCRYPT_SALT_ALPHABET.length)];
+  }
+  return `$2b$${BCRYPT_ROUNDS}$${salt}`;
+}
+
+export interface UserSeed {
+  name: string;
+  email: string;
+  password: string;
+  role: 'system_admin' | 'member';
+  status: 'active' | 'inactive';
+}
+
+export interface ProjectSpec {
+  name: string;
+  description: string;
+  status: 'active' | 'on_hold' | 'completed' | 'archived';
+  ownerEmail: string | null;
+  memberEmails: { email: string; role: 'admin' | 'member' | 'guest' }[];
+}
+
+export interface ActivityContext {
+  threadIds: number[];
+  commentIds: number[];
+  todoIds: number[];
+  fileIds: number[];
+  meetingIds: number[];
+  noteIds: number[];
+  milestoneIds: number[];
+}
+
+export const CANONICAL_USERS: UserSeed[] = [
+  {
+    name: 'Admin User',
+    email: 'admin@example.com',
+    password: 'admin123',
+    role: 'system_admin',
+    status: 'active',
+  },
+  {
+    name: 'Alice Tanaka',
+    email: 'alice@example.com',
+    password: 'password',
+    role: 'member',
+    status: 'active',
+  },
+  {
+    name: 'Bob Sato',
+    email: 'bob@example.com',
+    password: 'password',
+    role: 'member',
+    status: 'active',
+  },
+  {
+    name: 'Carol Yamada',
+    email: 'carol@example.com',
+    password: 'password',
+    role: 'member',
+    status: 'active',
+  },
+  {
+    name: 'Dave Suzuki',
+    email: 'dave@example.com',
+    password: 'password',
+    role: 'member',
+    status: 'active',
+  },
+  {
+    name: 'Eve Mori (inactive)',
+    email: 'eve@example.com',
+    password: 'password',
+    role: 'member',
+    status: 'inactive',
+  },
+];
+
+export const CANONICAL_PROJECTS: ProjectSpec[] = [
+  {
+    name: 'Website Redesign',
+    description: 'コーポレートサイトの全面リニューアルプロジェクト',
+    status: 'active',
+    ownerEmail: 'alice@example.com',
+    memberEmails: [
+      { email: 'bob@example.com', role: 'member' },
+      { email: 'carol@example.com', role: 'member' },
+    ],
+  },
+  {
+    name: 'Mobile App v2',
+    description: 'iOS/Androidアプリの次期メジャーバージョン開発',
+    status: 'active',
+    ownerEmail: 'bob@example.com',
+    memberEmails: [
+      { email: 'alice@example.com', role: 'member' },
+      { email: 'dave@example.com', role: 'member' },
+    ],
+  },
+  {
+    name: 'Marketing Campaign Q4',
+    description: '第4四半期マーケティングキャンペーンの企画・実行',
+    status: 'on_hold',
+    ownerEmail: 'carol@example.com',
+    memberEmails: [
+      { email: 'alice@example.com', role: 'member' },
+      { email: 'bob@example.com', role: 'member' },
+      { email: 'dave@example.com', role: 'guest' },
+    ],
+  },
+];
+
+export function insert(
+  db: SqliteDatabase,
+  sql: string,
+  params: Record<string, unknown> = {}
+): number {
+  return Number(db.execute(sql, params).lastInsertRowid);
+}
+
+export function addMember(
+  db: SqliteDatabase,
+  projectId: number,
+  userId: number,
+  role: ProjectMemberRole
+): void {
+  insert(
+    db,
+    `INSERT INTO project_members (project_id, user_id, role, joined_at)
+     VALUES (@projectId, @userId, @role, @joinedAt)`,
+    { projectId, userId, role, joinedAt: now() }
+  );
+}