chore(design-system): relocate single-use client components to consumer's _components/

[myelinated-wackerow]

A component-disposition audit identified "use client" components with exactly one consumer (with a couple of borderline cases noted). They should live next to that consumer in a _components/ directory, not in the shared src/components/ namespace.

Single PR. Each move = git mv + import path updates + verify build.

Items

• src/components/CentralizedExchanges/ -> app/[locale]/get-eth/_components/CentralizedExchanges/

  • Consumer: app/[locale]/get-eth/_components/CentralizedExchangesLazy.tsx (dynamic import)

• src/components/StablecoinAccordion/ -> app/[locale]/stablecoins/_components/StablecoinAccordion/

• src/components/StablecoinsTable.tsx -> app/[locale]/stablecoins/_components/StablecoinsTable.tsx

• src/components/Layer2NetworksTable/ -> app/[locale]/layer-2/networks/_components/Layer2NetworksTable/

  • Has internal hooks (useNetworkColumns, useNetworkFilters); ensure all internal imports update correctly

• src/components/StartWithEthereumFlow/ -> app/[locale]/start/_components/StartWithEthereumFlow/

• src/components/EthPriceCard.tsx -> app/[locale]/get-eth/_components/EthPriceCard.tsx

• src/components/ConnectToEthereumButton/ -> co-locate inside src/components/StartWithEthereumFlow/ConnectYourWallet/ (or with StartWithEthereumFlow's new home once that relocates)

  • Technically server (no "use client"); sits inside the StartWithEthereumFlow feature
  • Coordination: this and StartWithEthereumFlow should land together to avoid a stale import path

• src/components/FindWalletProductTable/ -> app/[locale]/wallets/find-wallet/_components/FindWalletProductTable/ (borderline)

  • Has an existing story file; relocating moves the story with it
  • Reviewer may choose to keep it in shared src/components/ for designer discoverability

Verification before merge

• pnpm lint passes
• npx tsc --noEmit passes
• pnpm build passes
• No git grep "from \"@/components/<MovedName>" hits remaining
• All internal sub-imports inside Layer2NetworksTable/ and StartWithEthereumFlow/ resolve correctly after the move
• Storybook still builds (relevant for FindWalletProductTable/ if it moves)

Out of scope

• src/components/ListingMethodology/ -- brand new and designed for reuse on other pages; only one consumer today but the design intent is shared. Stays in src/components/.
• src/components/WalletProviders.tsx -- two consumers but kept shared rather than folded into a feature dir.
• Components consumed only through BaseLayout.tsx / Static.tsx (Logo/, EnergyConsumptionChart/, FeedbackWidget/, MatomoOptOut.tsx, History/, TranslationChartImage/) -- shared via layouts, pending team decision
• Components already covered by issue chore(design-system): relocate tight-scope components to page-scoped _components/ #18190 -- relocated there instead
• Functional-only client components (ClientOnly.tsx, etc.) -- intentionally left alone per team decision

[github-actions]

This issue is stale because it has been open 30 days with no activity.