Use user info proxy (#1963)

<!-- CURSOR_SUMMARY -->
> [!NOTE]
> Switches budget fetch to `https://api.dyad.sh/v1/user/info` and
validates/consumes `usedCredits`, `totalCredits`, and `budgetResetDate`
directly via Zod.
> 
> - **IPC/Pro handlers (`src/ipc/handlers/pro_handlers.ts`)**:
> - **Endpoint**: Update user info URL to
`https://api.dyad.sh/v1/user/info`.
> - **Validation**: Add `zod` schema `UserInfoResponseSchema` to
validate API response.
> - **Data mapping**: Use `usedCredits`, `totalCredits`,
`budgetResetDate`, and `userId` from response directly; remove
conversion logic and old nested `user_info` parsing.
> - **Redaction**: Compute `redactedUserId` from `userId` and return
parsed `UserBudgetInfo`.
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
da1f192c2cabb2154bd10b69555c27d62fbb6368. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

<!-- This is an auto-generated description by cubic. -->
## Summary by cubic
Switched user budget fetch to the new user info proxy and added schema
validation. Uses API-provided credits directly and removes the old
conversion logic.

- **Refactors**
  - Use https://api.dyad.sh/v1/user/info instead of llm-gateway.
- Validate response with a Zod schema (usedCredits, totalCredits,
budgetResetDate, userId).
  - Map fields directly to UserBudgetInfo and remove CONVERSION_RATIO.
  - Keep redacted user ID format (****1234).

- **Dependencies**
- Removed unused html-dom-parser, html-react-parser, and react-property
from the lockfile.

<sup>Written for commit da1f192c2cabb2154bd10b69555c27d62fbb6368.
Summary will update automatically on new commits.</sup>

<!-- End of auto-generated description by cubic. -->

src/ipc/handlers/pro_handlers.ts

@@ -4,12 +4,19 @@ import { createLoggedHandler } from "./safe_handle";
 import { readSettings } from "../../main/settings"; // Assuming settings are read this way
 import { UserBudgetInfo, UserBudgetInfoSchema } from "../ipc_types";
 import { IS_TEST_BUILD } from "../utils/test_utils";
+import { z } from "zod";
+
+export const UserInfoResponseSchema = z.object({
+  usedCredits: z.number(),
+  totalCredits: z.number(),
+  budgetResetDate: z.string(), // ISO date string from API
+  userId: z.string(),
+});
+export type UserInfoResponse = z.infer<typeof UserInfoResponseSchema>;
 
 const logger = log.scope("pro_handlers");
 const handle = createLoggedHandler(logger);
 
-const CONVERSION_RATIO = (10 * 3) / 2;
-
 export function registerProHandlers() {
   // This method should try to avoid throwing errors because this is auxiliary
   // information and isn't critical to using the app
@@ -36,7 +43,7 @@ export function registerProHandlers() {
       return null;
     }
 
-    const url = "https://llm-gateway.dyad.sh/user/info";
+    const url = "https://api.dyad.sh/v1/user/info";
     const headers = {
       "Content-Type": "application/json",
       Authorization: `Bearer ${apiKey}`,
@@ -57,21 +64,28 @@ export function registerProHandlers() {
         return null;
       }
 
-      const data = await response.json();
-      const userInfoData = data["user_info"];
-      const userId = userInfoData["user_id"];
+      const rawData = await response.json();
+
+      // Validate the API response structure
+      const data = UserInfoResponseSchema.parse(rawData);
+
       // Turn user_abc1234 =>  "****1234"
       // Preserve the last 4 characters so we can correlate bug reports
       // with the user.
       const redactedUserId =
-        userId.length > 8 ? "****" + userId.slice(-4) : "<redacted>";
+        data.userId.length > 8 ? "****" + data.userId.slice(-4) : "<redacted>";
+
       logger.info("Successfully fetched user budget information.");
-      return UserBudgetInfoSchema.parse({
-        usedCredits: userInfoData["spend"] * CONVERSION_RATIO,
-        totalCredits: userInfoData["max_budget"] * CONVERSION_RATIO,
-        budgetResetDate: new Date(userInfoData["budget_reset_at"]),
+
+      // Transform to UserBudgetInfo format
+      const userBudgetInfo = UserBudgetInfoSchema.parse({
+        usedCredits: data.usedCredits,
+        totalCredits: data.totalCredits,
+        budgetResetDate: new Date(data.budgetResetDate),
         redactedUserId: redactedUserId,
       });
+
+      return userBudgetInfo;
     } catch (error: any) {
       logger.error(`Error fetching user budget: ${error.message}`, error);
       return null;