harb/web-app/AGENTS.md
johba 67de651242 chore: gardener housekeeping 2026-03-23
- Update all AGENTS.md watermarks to HEAD (b276392)
- Clean up dust.jsonl: remove already-bundled items (601,627,739,741)
- Pending actions: promote #1099/#1100/#1101 to backlog, close stale
  prediction issues #1020/#1103/#1107, comment on partial resolution
  of #1022 (holdout resolved, user-test still empty)
2026-03-23 07:15:23 +00:00

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<!-- last-reviewed: b276392e7a1d4eda36ec20a90ef22de471da2344 -->
# Web App - Agent Guide
Vue 3 + TypeScript staking interface for KRAIKEN, enabling users to stake tokens, manage positions, and interact with Harberger-tax mechanics.
## Technology Snapshot
- Vue 3 (Composition API) with TypeScript and Vite toolchain
- Wagmi/Viem for wallet connection and blockchain interaction
- Vue Router for navigation
- Axios for GraphQL queries to Ponder indexer
- Sass-based component styling
## Architecture
### Chain Configuration
`src/services/chainConfig.ts` centralizes endpoint resolution. All composables accept `chainId` as a parameter and resolve endpoints via `chainConfigService.getEndpoint(chainId, type)`. Supported chains: 31337 (Anvil), 84532 (Base Sepolia), 8453 (Base Mainnet).
### Wagmi Integration
`src/wagmi.ts` manages wallet connection. Wagmi is the source of truth for which chain the wallet is on. Composables don't import wallet state directly — they accept `chainId` for testability.
### Key Composables
- `useWallet()` — Wallet connection, balance, account state
- `usePositions(chainId)` — Loads staking positions from Ponder GraphQL
- `useStatCollection(chainId)` — Protocol-wide statistics
- `useSnatchSelection(demo, taxRateIndex, chainId)` — Calculates snatchable positions
- `useStake()` — Executes staking transactions
- `useAdjustTaxRate()` — Tax rate adjustment
- `useUnstake()` — Position exit transactions
### Key Components
- `StakeView.vue` — Main staking dashboard (route: `/dashboard`)
- `StakeHolder.vue` — Staking form with accessibility-focused UI
- `ConnectWallet.vue` — Wallet connection modal
- `ChartComplete.vue` — Position visualization
- `CollapseActive.vue` — Expandable position card with actions
## Development Workflow
- Boot full stack: `./scripts/dev.sh start` (see root AGENTS.md)
- Targeted: `npm run dev` (assumes Ponder/Anvil already running)
- Build: `npm run build`
- E2E tests: `npm run test:e2e` from repo root (Playwright)
## Testing
- E2E tests in `tests/e2e/` (repo root) cover complete user journeys
- Uses mocked wallet provider with Anvil accounts
- Relies on semantic HTML and ARIA attributes for selectors
- StakeHolder test hooks: `page.getByRole('slider', { name: 'Token Amount' })`, `page.getByLabel('Tax')`
## Quality Guidelines
- Composables accept `chainId` parameter instead of importing wallet state directly
- Each composable maintains its own `watchChainId()` listener for independence
- Always expose `xxxError` and `loading` refs for UI feedback
- Use strongly typed interfaces for Position, StatsRecord, etc.
- Use semantic HTML, ARIA attributes, and keyboard navigation
- Clear watchers and retry timers in `onUnmounted()`