refactor(all): rewrite all behavior docs in table format with checkboxes
Rewrite all 11 remaining behavior documents to match the streamlined
invoice.md format:
- dashboard.md: 250 lines, 62 behaviors
- payment.md: 260 lines, behaviors for list, void, check printing, ACH
- transaction.md: 310 lines, list, import, admin insights
- ledger.md: 519 lines, entries, P&L, balance sheet, cash flows
- company.md: 320 lines, profile, 1099s, Plaid/Yodlee, reports
- admin.md: 494 lines, clients, accounts, vendors, rules, jobs, history
- pos.md: 405 lines, sales, deposits, tenders, refunds, shifts
- search-indicators.md: 167 lines, search modal, indicators
- auth.md: 184 lines, login, logout, impersonation, sessions
- outgoing-invoice.md: 192 lines, create, line items, PDF
- legacy-spa.md: 340 lines, all legacy pages (docs only)
All documents now use:
- Testing Patterns section with reusable abstractions
- Numbered tables: # | Behavior | Test Strategy | Status
- It should... behavior descriptions
- Checkboxes [ ]/[x] for tracking implementation
- Cross-Cutting Behaviors for permissions, lock dates, etc.
- Test Data Requirements tables
- Existing Tests to Preserve sections
Total: 3,844 lines of behavior documentation across 12 subsystem docs.