feat(infra): add mana-sync and mana-notify-go to docker-compose

- mana-sync on port 3051 (Go sync server for local-first apps)
- mana-notify-go on port 3040 (Go notification service)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

services/mana-user/src/lib/errors.ts

@@ -0,0 +1,43 @@
+import { HTTPException } from 'hono/http-exception';
+
+export class BadRequestError extends HTTPException {
+	constructor(message: string) {
+		super(400, { message });
+	}
+}
+
+export class UnauthorizedError extends HTTPException {
+	constructor(message = 'Unauthorized') {
+		super(401, { message });
+	}
+}
+
+export class ForbiddenError extends HTTPException {
+	constructor(message = 'Forbidden') {
+		super(403, { message });
+	}
+}
+
+export class NotFoundError extends HTTPException {
+	constructor(message = 'Not found') {
+		super(404, { message });
+	}
+}
+
+export class ConflictError extends HTTPException {
+	constructor(message = 'Conflict') {
+		super(409, { message });
+	}
+}
+
+export class InsufficientCreditsError extends HTTPException {
+	constructor(
+		public readonly required: number,
+		public readonly available: number
+	) {
+		super(402, {
+			message: 'Insufficient credits',
+			cause: { required, available },
+		});
+	}
+}