Frontend macro-decisions — component model, state-management choice (local / server / global / signals), data-fetching strategy (REST / GraphQL / RSC / cache-and-mutate), rendering strategy (SSR / SSG / ISR / CSR / streaming), routing model, micro-frontends (only if justified). The FE analog of `architecture-pattern-selection`. Solution Architect runs this for any web product; defaults to KISS — the simplest FE architecture that meets the NFRs. Use whenever a new web product is being designed or a slice introduces FE patterns not yet established.
