Polish responsive finance workflows and visual hierarchy

[theMattCode]

User story

As a user, I want finance workflows that are fast on mobile and clear on desktop so day-to-day finance review and entry feel efficient.

Depends on

• Issue Add live Finance Dashboard read model and UI #20

Scope

• Review and polish mobile layouts for accounts, ledger, budgets, reminders, investments, and dashboard.
• Ensure tables collapse into cards/lists where needed.
• Improve dashboard hierarchy, spacing, visual grouping, and chart readability.
• Add empty, loading, error, and destructive confirmation states.
• Ensure text does not overflow controls or overlap content.

Non-scope

• New finance domain behavior.
• Marketing/landing page design.

Acceptance criteria

• Finance dashboard and drill-down workflows work at common mobile and desktop widths.
• No horizontal scrolling is required for primary workflows.
• Buttons, cards, tables, charts, and forms remain readable and usable.
• Desktop uses extra space for richer composition without becoming decorative.
• All destructive actions have clear confirmation behavior.