refactor(config): reorganize UI and theme sections with custom accent and colors

dot_config/herdr/config.toml

@@ -3,11 +3,6 @@ onboarding = false
 [ui.toast]
 delivery = "system"
 
-[ui]
-
-show_agent_labels_on_pane_borders = true
-agent_panel_sort = "priority"
-
 [keys]
 # tmux-style bindings (prefix is the leader, default ctrl+b)
 split_vertical = "prefix+%"
@@ -47,10 +42,6 @@ pane_history = false
 kitty_graphics = true
 
 switch_ascii_input_source_in_prefix = true
-[theme]
-name = "terminal"
-auto_switch = false
-
 [[keys.command]]
 key = "ctrl+h"
 type = "plugin_action"
@@ -122,3 +113,39 @@ key = "prefix+shift+o"
 type = "shell"
 command = '"${HERDR_BIN_PATH}" plugin pane open --plugin official.browser --entrypoint browser --placement overlay --focus'
 description = "open browser overlay"
+
+[ui]
+# The tab strip: `ui.accent` fills the active tab. Solid `#5ea1ff` puts a raw
+# neon block above the panes, so this is the same plate kitty's tab bar uses —
+# the accent mixed 20% into the background — and the label on top of it is the
+# accent itself (see `surface_dim` below).
+accent = "#243348"
+
+[theme]
+name = "terminal"
+auto_switch = false
+
+[theme.custom]
+# Panes keep the terminal's own background, so kitty's translucency, and the
+# Hyprland blur under it, survive inside herdr.
+panel_bg = "reset"
+
+# Surfaces: bg for the spaces rail, bg_alt for the row under the cursor,
+# bg_highlight for selection — the same three-step ramp as the rest of the theme.
+sidebar_bg = "#16181a"
+active_row_bg = "#1e2124"
+selection_bg = "#3c4048"
+
+# One token paints both the sidebar/panel rule and the active tab's label, so it
+# has to read as a lit edge on #16181a and as text on the tab plate: the accent
+# does both, and matches kitty's accent-colored active tab title.
+surface_dim = "#5ea1ff"
+
+accent = "#5ea1ff"
+
+# Agent-state marks.
+green = "#5eff6c"
+yellow = "#f1ff5e"
+red = "#ff6e5e"
+peach = "#ffbd5e"
+mauve = "#bd5eff"