bread-theme: differentiate liquid-motion/glass-workbench launcher geometry per approved demos

The two built-in launcher themes previously shared the same row radius,
padding, icon treatment, and selection fill (only mode/width/top/radius/
icon_px were themed), so breadbox's overlay rendered as one launcher
recoloured rather than two different instruments.

Adds row_radius, row_inset, row_padding_v/h, icon_radius, search_font_size,
search_padding_v/h, and selection_alpha to [launcher], all consumed by
breadbox's build_css in the paired breadbox commit. Sets liquid-motion to
the soft/roomy demo numbers (row radius 12, 28px icons, 22% selection alpha,
Recent/Apps section headers) and glass-workbench to the dense/technical demo
numbers (row radius 6, 22px icons, 28% selection alpha, flat list).

Also wires up three previously-declared-but-unconsumed tokens
(font_family, font_fallback, font_size_base) for breadbox's launcher panel
specifically — scoped consumption, not the full ecosystem-wide font system
replacement (breadbar/stylesheet() are unaffected). Updated the stale
doc comments in types.rs/mod.rs and both theme.toml files to match, and
updated the two existing launcher-geometry tests plus added a glass-workbench
equivalent.

Defaults for all new keys reproduce breadbox's pre-redesign hardcoded CSS
values, so themes that don't set them (spotlight's capsule doesn't read any
of this) are unaffected.

bread-theme/assets/shell/liquid-motion/theme.toml

@@ -1,28 +1,31 @@
-# The compiled-in builtin theme (bread-theme/src/shell/builtin.rs). Describes
-# breadbar/breadbox AS THEY EXIST TODAY, not the 01-liquid-motion.html demo —
-# where the two disagree (bar side margin, launcher width/top, the two easing
-# curves), this file follows the current Rust source, since Phase 2's
-# acceptance test is pixel-identical rendering against today's bar.
+# The compiled-in builtin theme (bread-theme/src/shell/builtin.rs). The bar
+# side (workspaces/clock/chips/satellites) describes breadbar AS IT EXISTS
+# TODAY, not the 01-liquid-motion.html demo — where the two disagree (bar
+# side margin, the two easing curves), this file follows the current Rust
+# source, since Phase 2's acceptance test is pixel-identical rendering
+# against today's bar. The `[launcher]` table is the one exception: it now
+# follows bos-ui-demos/proposed/liquid-motion.html's `.bx` block (the
+# launcher-core redesign's spec) rather than breadbox's old, pre-redesign
+# hardcoded CSS — see that section's own note.
 #
 # Sources: breadbar/src/main.rs:16-22 (BAR_* / CHIP_HEIGHT / ICON_PX consts),
 # breadbar/src/theme.rs (load_css's radius/pad/spring locals and the actual
 # CSS selectors), breadbar/src/{panel,osd}.rs and
 # breadbar/src/notifications/{popup,history}.rs (satellite window anchors,
-# margins, namespaces), breadbox/breadbox/src/main.rs:341-346 (launcher
-# margin/size), :151 (build_css's .launcher-bg radius), :174-193 (make_icon's
-# set_pixel_size calls), ~/.config/hypr/scripts/ui/rules.lua (compositor
-# rules).
+# margins, namespaces), bos-ui-demos/proposed/liquid-motion.html (launcher),
+# ~/.config/hypr/scripts/ui/rules.lua (compositor rules).
 
 name = "Liquid Motion"
 id   = "liquid-motion"
 
 [tokens]
-# Declared-but-not-yet-consumed: neither breadbar nor breadbox reads
-# font_family/font_fallback/font_size_base. Both get the font that actually
-# renders from bread_theme::stylesheet()'s own hardcoded FONT_FAMILY
-# constant — a separate, ecosystem-wide system shared by every bread GUI,
-# not this per-theme manifest. See Tokens::font_family's doc comment.
-font_family    = "Varela Round, sans-serif"
+# font_family/font_fallback are now consumed, but only by breadbox's launcher
+# panel (breadbox::main::build_css's entry.search/row font-family) — see
+# Tokens::font_family's doc comment for the exact scope. breadbar's bar/chip/
+# clock text still comes from bread_theme::stylesheet()'s own hardcoded
+# FONT_FAMILY constant, unaffected by this key. font_size_base is likewise
+# now consumed for the launcher's row font-size only.
+font_family    = "Outfit, sans-serif"
 font_fallback  = "sans-serif"
 font_size_base = 14
 radius_bar     = 16
@@ -100,35 +103,34 @@ format    = "%H:%M"
 show_date = false
 
 [launcher]
-# breadbox/breadbox/src/main.rs:341-344 sets vbox.set_margin_top(120) and
-# vbox.set_size_request(600, -1) — the demo's "540px overlay, 16% top" is a
-# design-doc approximation, not what the code does today.
+# Liquid Motion / Glass Workbench redesign (bos-ui-demos/proposed/
+# liquid-motion.html's `.bx` block is the spec): soft and roomy — a big
+# panel radius, generous row insets/padding, 28px icons, section headers,
+# and a translucent (not solid) accent selection fill. breadbox reads every
+# key below now; see main.rs's build_css for the consuming CSS.
 mode     = "overlay"
 width    = 600
 top      = "120px"
-# .launcher-bg { border-radius: 8px } (build_css, main.rs:151) — corrected
-# from an earlier demo-derived 20px; breadbox does not implement the demo's
-# 20px rounding.
-radius   = 8
-# make_icon() (main.rs:174-193) calls img.set_pixel_size(32) on both the
-# cached-texture (gio::File/gdk::Texture) path and the GTK icon-theme
-# fallback path — corrected from a demo-derived 36px.
-icon_px  = 32
-# Declared-but-not-yet-consumed: breadbox's Phase 4b-i wiring reads only
-# mode/width/top/radius/icon_px above; it does not read any of the five keys
-# below. row_anim/rule/footer are demo-derived aspirations breadbox
-# implements not at all today (no row entrance/exit animation, no
-# rule/divider element between the search entry and the list, no footer
-# widget summarizing app count). sections/modes happen to already describe
-# today's actual (trivial) behaviour — one flat unsectioned list, plain app
-# search with no calc/command/url modes — but are likewise unread by any
-# code path; a real sections/modes implementation is Phase 5/6, same as the
-# other three.
+radius   = 20
+icon_px  = 28
 row_anim = "flip"
 rule     = "gradient"
 footer   = "count_apps"
-sections = false
+sections = true
 modes    = ["apps"]
+# `.bx .r { border-radius: 12px; margin: 0 8px; padding: 10px 12px }`
+row_radius       = 12
+row_inset        = 8
+row_padding_v    = 10
+row_padding_h    = 12
+# `.bx .ico { border-radius: 9px }` (paired with icon_px = 28 above)
+icon_radius      = 9
+# `.bx .q { padding: 16px 18px; font-size: 16px }`
+search_font_size = 16
+search_padding_v = 16
+search_padding_h = 18
+# `.bx .r.sel { background: rgba(accent, .22) }`
+selection_alpha  = 0.22
 
 # Keyed by layer-shell namespace, matching [compositor.*] below, so the two
 # tables share one keyspace and can be validated against each other.