fix: read version from package.json, bump to 0.6.0, remove signup/free from OpenAPI spec

src/routes/signup.ts

@@ -5,57 +5,6 @@ import logger from "../services/logger.js";
 export const signupRouter = Router();
 
 // Simple signup: email → instant API key (no verification for now)
-/**
- * @openapi
- * /v1/signup/free:
- *   post:
- *     tags: [Signup]
- *     summary: Create a free account
- *     description: Sign up with an email to get a free API key (100 screenshots/month).
- *     operationId: signupFree
- *     requestBody:
- *       required: true
- *       content:
- *         application/json:
- *           schema:
- *             type: object
- *             required: [email]
- *             properties:
- *               email:
- *                 type: string
- *                 format: email
- *                 description: Your email address
- *                 example: "user@example.com"
- *     responses:
- *       200:
- *         description: API key created
- *         content:
- *           application/json:
- *             schema:
- *               type: object
- *               properties:
- *                 apiKey:
- *                   type: string
- *                   description: Your new API key
- *                 tier:
- *                   type: string
- *                   example: free
- *                 limit:
- *                   type: integer
- *                   example: 100
- *                 message:
- *                   type: string
- *       400:
- *         description: Invalid email
- *         content:
- *           application/json:
- *             schema: { $ref: "#/components/schemas/Error" }
- *       500:
- *         description: Signup failed
- *         content:
- *           application/json:
- *             schema: { $ref: "#/components/schemas/Error" }
- */
 signupRouter.post("/free", async (req, res) => {
   const { email } = req.body;