chore: gardener housekeeping 2026-03-23

AGENTS.md watermarks refreshed to HEAD (209e0c7). Key content updates:
- root AGENTS.md: added packages/analytics/ to directory map
- landing/AGENTS.md: documented @harb/analytics integration and Umami funnel tracking
- web-app/AGENTS.md: documented analytics events (wallet_connect, swap_initiated, stake_created)
- onchain/AGENTS.md: documented AttackRunner fixes (taxRate as index, vm.warp, same-broadcast recenter), 2000-trade floor-ratchet evidence

Pending actions (6): promote #1083 and #1086 to backlog, unblock #1099.

web-app/AGENTS.md

@@ -1,4 +1,4 @@
-<!-- last-reviewed: b276392e7a1d4eda36ec20a90ef22de471da2344 -->
+<!-- last-reviewed: 209e0c798ea85204c5fe466ba7b54b874095e08f -->
 # Web App - Agent Guide
 
 Vue 3 + TypeScript staking interface for KRAIKEN, enabling users to stake tokens, manage positions, and interact with Harberger-tax mechanics.
@@ -46,6 +46,18 @@ Vue 3 + TypeScript staking interface for KRAIKEN, enabling users to stake tokens
 - Relies on semantic HTML and ARIA attributes for selectors
 - StakeHolder test hooks: `page.getByRole('slider', { name: 'Token Amount' })`, `page.getByLabel('Tax')`
 
+## Analytics
+
+The web app uses `@harb/analytics` (self-hosted Umami wrapper) for funnel event tracking. `initAnalytics(VITE_UMAMI_URL, VITE_UMAMI_WEBSITE_ID)` is called in `main.ts`. Tracked events:
+
+| Event | Where | Helper |
+|-------|-------|--------|
+| `wallet_connect` | `useWallet.ts` — on first address set | `trackWalletConnect()` |
+| `swap_initiated` | `useSwapKrk.ts` — before buy/sell tx | `trackSwapInitiated('buy'\|'sell')` |
+| `stake_created` | `useStake.ts` — after PositionCreated event | `trackStakeCreated()` |
+
+All calls are silent no-ops if Umami is unavailable. Env vars: `VITE_UMAMI_URL`, `VITE_UMAMI_WEBSITE_ID`.
+
 ## Quality Guidelines
 - Composables accept `chainId` parameter instead of importing wallet state directly
 - Each composable maintains its own `watchChainId()` listener for independence