clear cache function

[jadzeidan]

add clear cache button in advanced settings so users don't need to manually navigate folders to delete them.

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[jadzeidan]

@coderabbitai

[coderabbitai]

@jadzeidan Sure! I'll review the changes in this PR now.

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Review triggered.

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[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro Plus

Run ID: 51f31c75-d223-41be-ba84-fb75a8c4e809

📥 Commits

Reviewing files that changed from the base of the PR and between efef487 and 0a698c8.

📒 Files selected for processing (8)

• backend/backend.go
• backend/backend_test.go
• backend/handlers/handlers.go
• frontends/web/src/api/backend.ts
• frontends/web/src/locales/en/app.json
• frontends/web/src/routes/settings/advanced-settings.tsx
• frontends/web/src/routes/settings/components/advanced-settings/clear-cache-setting.test.tsx
• frontends/web/src/routes/settings/components/advanced-settings/clear-cache-setting.tsx

👮 Files not reviewed due to content moderation or server errors (8)

• frontends/web/src/locales/en/app.json
• backend/backend.go
• backend/backend_test.go
• backend/handlers/handlers.go
• frontends/web/src/api/backend.ts
• frontends/web/src/routes/settings/advanced-settings.tsx
• frontends/web/src/routes/settings/components/advanced-settings/clear-cache-setting.test.tsx
• frontends/web/src/routes/settings/components/advanced-settings/clear-cache-setting.tsx

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📝 Walkthrough

Walkthrough

This PR adds a user-facing cache-clearing feature across the backend and web frontend. The backend tracks initialization state via a new started flag, refactors rate-updater setup into a newRatesUpdater() helper, and implements a ClearCache() method that safely removes cached exchange-rate data while preserving configuration and user data. The HTTP API exposes this via a new /api/clear-cache endpoint. The frontend provides a ClearCacheSetting React component integrated into advanced settings that displays a confirmation dialog, calls the backend API asynchronously, and reports errors to the user. Tests verify both backend behavior (data preservation) and frontend behavior (dialog interaction and API invocation).

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[jadzeidan]

Tested successfully on macOS build and webview.

And the rabbit seems happy, ready for review.

[benma]

Once is enough 😄

[benma]

CI is failing, please fix.

[jadzeidan]

Address comments. @benma PTAL