[guyverino]

What & why

MoonInput::new(id) and MoonNumberInput::new(id) take an id, but it only keyed their state: the element they render was keyed by the state entity (("input", entity_id) / ("number-input", entity_id)), a number that changes between launches. By element path every field of a form was MoonUI's inner input-state, so anything that addresses controls by path — the GPUI inspector, a scripted test, MoonTerminal's UI-atlas capture — could not tell one field from another (84 of them in the terminal's atlas collapsed this way).

Changes

• Input::id(impl Into<ElementId>) and NumberInput::id(..) name the root element. Without a call the root keeps its entity key, so direct users of Input/NumberInput see no change.
• MoonInput and MoonNumberInput pass their own id to it.
• docs/component-mirror-baseline.json refreshed for the two touched donor files (input/input.rs, input/number_input.rs). The component API baseline did not change.

Notable decisions

• The id goes on the existing root rather than on a wrapper div: a wrapper would sit between the caller's flex layout and the input and change its sizing (and break MoonInput::bounds' absolute placement).
• Uniqueness is the caller's: two siblings with one id share their hover/scroll element state (GPUI does not panic on siblings). In MoonTerminal every literal MoonInput::new id is unique; the one repeat is in a test file.

How to verify

cargo fmt --all -- --check
cargo check -p moon-ui-gallery
cargo test -p moon-ui-components   # 617 passed
cargo test -p moon-ui-gallery      # 9 passed
cargo xtask component-audit --check-baseline
cargo xtask component-api --check-baseline
cargo xtask component-mirror --donor-root vendor/longbridge-gpui-component-ui-src --check-baseline

Checked against MoonTerminal through a local [patch]: build, clippy --workspace --all-targets -D warnings and cargo test --workspace green; a full UI-scene capture of 152 screens differs from the previous one by at most 0.12 % of pixels per screen, and every field now carries the caller's id.