feat: add invoice template system with custom branding

[Jayrodri088]

Summary

Adds an invoice template system so freelancers can customize invoice appearance (logo, colors, footer) and keep branding consistent across invoices, PDFs, and email notifications.

Changes

API

• GET/POST /api/routes-d/branding/templates – List templates, create template (max 5 per user, first or explicitly set default).
• GET/PUT/DELETE /api/routes-d/branding/templates/[id] – Get, update, or delete a template; setting isDefault: true clears default on others.
• POST /api/routes-d/branding/logo-upload – Upload branding logo (images only, max 2MB). Returns path stored on template.
• GET /api/routes-d/branding/logo?path=userId/filename – Authenticated serve for logo files (used by editor preview and PDF).

Database

• New InvoiceTemplate model: id, userId, name, isDefault, logoUrl, primaryColor, accentColor, showLogo, showFooter, footerText, layout (modern | classic | minimal), timestamps. Index on (userId, isDefault).
• User has new relation invoiceTemplates.

Frontend

• components/settings/TemplateEditor.tsx – Template list, create/edit form, hex color pickers for primary/accent, logo file upload, live invoice-style preview, set default, delete. Resolves /branding-logos/ logo URLs via authenticated fetch for preview.

PDF & email

• lib/invoice-renderer.tsx – Branded invoice PDF with template config (logo, colors, layout, footer). Re-exported from lib/pdf.tsx for backward compatibility.
• Invoice PDF route uses default template (or BrandingSettings fallback); resolves /branding-logos/ to absolute path for server-side rendering.
• Invoice-created and invoice auto-cancelled emails accept optional branding (primary/accent/footerText/logoUrl) and use default template when available (subscription cron, bulk invoices, cancel-overdue cron).

Other

• lib/file-storage.ts – validateLogoFile, storeBrandingLogoFile, getBrandingLogoAbsolutePath for branding logos under uploads/branding-logos/.
• lib/email-templates/invoice-auto-cancelled.tsx – Optional branding prop for logo and colors.

Acceptance criteria (from spec)

• Users can upload custom logo (max 2MB).
• Hex color picker for primary/accent.
• Live preview of invoice template.
• Set default template (applies to new invoices / PDF / emails).
• Max 5 templates per user.
• Templates apply to email notifications.
• Export invoice as branded PDF.

How to test

1. npm install, npx prisma generate, npx prisma migrate dev --name add-invoice-templates, npm run dev.
2. Mount <TemplateEditor /> on a settings/branding page, log in, create a template, upload a logo, set default.
3. Create an invoice and open /api/routes-d/invoices/[id]/pdf (or use existing PDF action) – PDF should use template logo/colors/footer.
4. Trigger invoice-created or auto-cancelled flows and confirm emails use template branding when a default template exists.

Notes

• Logo in emails only displays if logoUrl is a full public URL; stored /branding-logos/ paths are used for in-app preview and PDF only.
• Existing BrandingSettings remains supported as fallback when no invoice template exists.

Closes: #240

[vercel]

@Jayrodri088 is attempting to deploy a commit to the david's projects Team on Vercel.

A member of the Team first needs to authorize it.

[davedumto]

HI @Jayrodri088 FIX THE CI ERRORS

[Jayrodri088]

@davedumto errors fixed