Fix CashFlowForecast infinite re-render risk and wrong auth token key

[Wilfred007]

What

CashFlowForecast.tsx triggers an error toast on mount because distributionAccount is empty. Also, the service reads from localStorage.getItem('accessToken') but auth stores the token as payd_auth_token. All API calls send empty bearer tokens.

Why

The page is broken: immediate error on load, and all API calls fail with 401 because the auth token is read from the wrong key.

Scope

In scope: Fix auth token key, handle empty params gracefully, fix useCallback dependencies
Out of scope: Page redesign

Acceptance Criteria

• No error toast on initial page load
• Auth token read from correct localStorage key
• API calls include valid bearer token
• No infinite re-render risk

Technical Context

• frontend/src/pages/CashFlowForecast.tsx lines 46-79 — issues
• frontend/src/services/cashFlowForecastApi.ts lines 108, 149, 189, 230 — wrong key
• Auth stores token as payd_auth_token per utils/api.ts

[waterWang]

Hi! I'd like to fix the CashFlowForecast issues — correct the auth token key (payd_auth_token), handle empty distributionAccount gracefully, and fix the useCallback deps to remove the infinite re-render risk. Will submit a PR shortly.

[waterWang]

Hi! I've submitted a fix in PR #577: corrected the auth token key from localStorage.getItem('accessToken') to localStorage.getItem('payd_auth_token') in all 4 API functions, and removed the error toast that fired on mount when params are empty.