Active and hover used the same ACTIVE_NAV_BG, so a selected row gave
no feedback when the cursor crossed it — the contrast ladder was a
single rung. Replace it with a four-state ladder shared by the home
anchor, launcher rows, and tab rows:
rest → transparent (HOVER_NAV_BG hover)
active → ACTIVE_NAV_BG (ACTIVE_NAV_BG_HOVER hover)
The choice lives in nav_row_palette(active) so the ladder cannot
silently disagree across the three callers. Close (×) becomes an
18 px circular coin (was a 16 px square) with the warm-dark hover
wash from CLOSE_HOVER_BG, shared by both row variants via a single
render_row_close_button recipe — the button now reads as something
to press, not a glyph in a square.
Hoist sidebar_chrome.rs alongside sidebar.rs to host the shared
constants/helpers and keep both files under the 500-line ceiling
(444 / 198). cargo test ely_app --bin ely_app: 103 passed.
ZacharyZhang-NY
25ff653d83