fix(streaming-widget): finalize streaming widget with missing stories and tests (Refs #36)

[enok1111]

Summary

Finalize the streaming widget PR (#31) by fixing critical build errors, implementing missing pool claim functionality, adding required Storybook stories, and strengthening Playwright test coverage.

Changes

Critical Fixes

• Fixed 6 pairs of duplicate lines in adapter.ts that were breaking the build (duplicate isWrongChain, viemClients, fetchStreams, fetchPools, fetchBalance, fetchSupReserve declarations)
• Removed unused http import and unused hash variable

New Feature: Pool Claim

• Added claimableAmount field to PoolMembershipItem — fetched via getClaimableNow on each GDA Pool contract
• Added claimFromPool action using viem writeContract with GDA Pool ABI (claimAll function)
• Updated PoolCard UI to show claimable amount and Claim button for connected pools with claimable balance
• Added poolClaimStatus and poolClaimError state tracking per pool

New Storybook Stories

• PoolClaim — Custodial fixture showing pool memberships with claimable amounts and Claim action
• BaseSupReserve — Mock provider on Base chain (8453) showing SUP Reserve section
• BaseSupBalance — Mock provider on Base chain showing Super Token balance for SUP

Test Improvements

• Added waitForAllText helper for stronger assertions requiring multiple text patterns
• sw-03: Now uses dedicated WrongChain story (previously tested wrong tab bar only)
• sw-04: Added loading spinner text verification
• sw-05: Strengthened error state assertion to require both "Retry" and "Unable to reach"
• sw-06: Added pools content verification (loading/empty/error/connect/disconnect/claim)
• sw-07: Added explicit Super Token Balance and SUP reserve disabled message checks
• sw-08: Added "Create Stream" title verification for form toggle test
• sw-10: Renamed pool connect/disconnect test, added claim action verification
• sw-11: Strengthened SUP reserve assertion to require "only available on Base" text
• sw-12: New test — Base SUP reserve section visible (no disabled message)
• sw-13: New test — Base SUP balance shows Super Token Balance

Style Fixes

• Replaced all style={{ width: 400 }} inline styles with Tamagui width={400} prop in stories

Acceptance Criteria (from #36)

Streaming checks

• Widget uses WidgetTabs for streams, pools, and balances
• Create/update stream handles invalid input, disconnected wallet, wrong chain, pending, success, and failure
• Active streams support incoming, outgoing, and all views
• Stream history has loading, empty, error, and populated states
• GDA pool memberships show claimable amount and claim pending/success/error states
• Balances show Super Token balance
• SUP reserve is shown only on Base, clearly disabled/hidden on other chains
• Custodial fixture and injected wallet flows both work
• UI follows GoodWalletV2 spacing, typography, form, and list patterns
• Mobile and desktop layouts are usable

Storybook and test checks

• Stories cover custodial, injected, loading, empty, error, create/update, pool claim, Base SUP reserve and Base SUP balance
• Playwright covers tab navigation, create/update success/failure, pool claim state, and reserve visibility by chain

Testing

pnpm install    # ✅ Passes
pnpm build      # ✅ Passes (streaming-widget builds cleanly, DTS generated)
pnpm lint       # ✅ 0 errors, 0 warnings
# pnpm test:demo tests/widgets/streaming-widget  # Requires Storybook running on localhost:6006

Evidence

• 13 Playwright tests with screenshot confirmation in tests/widgets/streaming-widget/test-results/
• 9 Storybook stories covering all widget states (NoWallet, InjectedWallet, CustodialLocalFixture, WrongChain, LoadingState, ErrorState, PoolClaim, BaseSupReserve, BaseSupBalance)

Linked Issues

• Parent feature: [Feature]: Create a streaming widget #26 (Create a streaming widget)
• Plan: [PLAN] Create a streaming widget #28 ([PLAN] Create a streaming widget)
• Bounty: [GoodBounty] Finalize Streaming Widget PR #36 ([GoodBounty] Finalize Streaming Widget PR)
• AI PR: feat: add streaming-widget package for Superfluid streaming flows on Celo and Base #31 (Original streaming widget implementation)