claude@clouddev1
1a9d950cc2
Adds the `[ERR]` / `[WRN]` validity indicator to the input row. `App` gains `input_indicator: Option<Severity>` (the runtime owns its timing — step E) and a pure `input_validity_verdict()` query that runs `input_verdict` in simple mode only (advanced mode is raw SQL, ADR-0027 §7). `render_input_panel` reserves the rightmost six columns of the input row unconditionally (ADR-0027 §4) — a five-column label plus a one-column gap — so the typed command never shifts sideways when the indicator appears or hides. The label renders only when `input_indicator` is set: `[ERR]` in `theme.error`, `[WRN]` in the new amber `theme.warning` (defined for both light and dark themes). The indicator is not yet wired live — `input_indicator` stays `None` until the debounce lands (step E). Covered by a render test and the theme contrast test; the input-panel snapshot is updated for the six-column reservation.