Add Merkl yield boost claiming to savings screen - #2592
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Implements the Yield boost card from Figma 26134:23293 with its Claim
button, and puts the card back on the funded savings vault screen (the
redesign had dropped it), under the balance card.
- The boost is paid by Merkl campaigns (one per vault, all WFUSE on
Fuse). lib/merklYieldBoost.ts reads the WFUSE leaf from
/v4/users/{address}/rewards, scopes "Total Earned" to the campaign ids
in EXPO_PUBLIC_MERKL_YIELD_BOOST_CAMPAIGN_IDS, and builds the claim.
It doesn't import @merkl/api, so it can be tested without it.
- Claim is one user operation: Distributor.claim with the cumulative
amount, then WFUSE.withdraw of exactly what the claim pays, measured
against the Distributor's own claimed record so a stale index can't
revert the batch. Proofs are re-read (bypassing Merkl's cache) right
before signing, and the query is refreshed the same way afterwards.
- Total Earned is the boost campaigns' credited amount plus pending, in
USD at the app's FUSE price (Merkl's quote as a fallback).
- The card stays visible with a disabled "—" boost for a user who lost
their tier but still has something to claim.
- The rewards yield-boost sheet now describes the FUSE boost and its
balance cap ("on your first $10,000") when the backend sends
yieldBoostBalanceCap, and keeps the old copy when it doesn't.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EupadZ9qYL5nDLM6dDtu5n
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Code reviewNo issues found. Checked for bugs and CLAUDE.md compliance. |
MusabShakeel576
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September 27, 2026 12:55
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Summary
Implements claiming of Merkl yield-boost rewards (WFUSE on Fuse) directly from the savings screen. Users can now view their accumulated boost earnings and claim them in a single transaction that unwraps WFUSE to native FUSE.
Key Changes
New Merkl yield-boost module (
lib/merklYieldBoost.ts):/v4/users/{address}/rewards)React hook (
hooks/useYieldBoostRewards.ts):useYieldBoostRewards: Queries boost rewards with 60s stale time to balance freshness and rate limitsuseClaimYieldBoost: Mutation that reads fresh proofs and onchain claimed state, executes the claim batch, and updates cacheUI updates (
components/Savings/NewSavings/SavingsYieldBoostCard.tsx):Configuration (
lib/config.ts,.env.example):EXPO_PUBLIC_MERKL_YIELD_BOOST_CAMPAIGN_IDSto scope earned rewards to specific campaignsType updates (
lib/types.ts,YieldBoostSheet.types.ts):yieldBoostBalanceCapto track the savings balance cap per tier (Prime $10K, Ultra $25K)Comprehensive tests (
lib/__tests__/merklYieldBoost.test.ts,components/Savings/NewSavings/__tests__/SavingsYieldBoostCard.test.tsx):Implementation Details
claimedrecord to calculate exact payouthttps://claude.ai/code/session_01EupadZ9qYL5nDLM6dDtu5n
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