~anthropic/claude-sonnet-latest → A (60:40)

Side A adds a coherent, well-documented new subsystem (form_template holes, ui_action parsing, /ui endpoint) with tests and refactors web_post handlers into reusable functions without breaking existing behavior—net positive, additive architecture. Side B rips out a large complex (if messy) autocomplete parser and replaces it with a simpler paste-and-go flow, which is a reasonable simplification but deletes substantial existing functionality/tests (including a Playwright race test) and is more of a scope reduction than a durable feature addition; net value is more mixed/negative in terms of preserved capability.