feat: add terms, privacy pages, email notification preferences, and sign-in consent (#107)

- /terms — Terms of Service for editor + pascal.app platform
- /privacy — Privacy Policy (data collection, third parties, user rights)
- Email notification toggle in Settings (new column + migration)
- Sign-in consent text linking to terms/privacy
- Effective date: February 20, 2026

Co-authored-by: Anton Pascal <anton-pascal@users.noreply.github.com>

packages/db/src/schema/auth/users.ts

@@ -19,6 +19,8 @@ export const users = pgTable(
     githubUrl: t.text('github_url'),
     /** X/Twitter profile URL */
     xUrl: t.text('x_url'),
+    /** Whether the user wants to receive email notifications about new features and updates */
+    emailNotifications: t.boolean('email_notifications').notNull().default(true),
     role: userRoles('role').notNull().default('user'),
     banned: t.boolean('banned').notNull().default(false),
     banReason: t.text('ban_reason'),