Add bulk invoice status filter presets to dashboard

[Kingsman-99]

Description

src/app/dashboard/page.tsx presumably has basic filtering but no one-click presets for common views (e.g. "Overdue", "Awaiting my payment", "Needs my approval"). This issue adds named filter presets.

Technical Context

Involves src/app/dashboard/page.tsx. Add a row of preset filter chips computing each from existing invoice data: Overdue (deadline < now && status === Pending), Awaiting my payment (connected address in recipients/allowed payers, not yet paid), Needs my approval (connected address is approver, approved === false).

Acceptance Criteria

• Each preset chip, when active, filters the dashboard list to exactly the matching set with a visible count badge
• Presets are mutually exclusive with manual filters being clearable independently (clicking a preset resets manual filters)
• Counts update live as invoice state changes (e.g. a payment made elsewhere updates "Awaiting my payment")
• Zero-match preset shows an appropriate empty state per preset (not a generic "no invoices")
• Unit tests: each preset's matching logic against a mixed sample dataset

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