From 7483eb390188005e54d1e5f1e9d2789b64ad8fe4 Mon Sep 17 00:00:00 2001
From: Craig Jennings <c@cjennings.net>
Date: Sun, 19 Jul 2026 21:50:08 -0500
Subject: chore: version active working artifacts

I made working/ a versioned home for in-progress project artifacts and moved disposable scratch to temp/. This preserves the full music UI design history and the deferred EAT XTWINOPS upstream patch.
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+#+TITLE: Music SVG Application Design Working Set
+#+AUTHOR: Craig Jennings
+
+* Purpose
+
+Six functional HTML/SVG prototypes for the music-config application design session.
+They explore the Dupre chronometer, hi-fi stereo, and automobile-dashboard visual
+language while preserving the current player, queue, radio, and playlist workflows.
+
+This directory owns the complete in-progress remodel package while the design
+continues.  The implementation spec is
+[[file:2026-07-19-music-config-ui-remodel-spec.org][2026-07-19-music-config-ui-remodel-spec.org]].
+The current interactive and rendering evidence lives under [[file:prototypes/][prototypes/]].
+Concept boards, source artwork, and visual references stay beside them so local
+iteration does not depend on files scattered through =docs/=.  When the design
+is accepted, the spec, prototypes, benchmark, render fixture, and selected final
+assets graduate together to their permanent =docs/= and =assets/= homes.
+
+The selected receiver now has a final interaction candidate at
+[[file:prototypes/2026-07-19-music-config-ui-remodel-prototype-1.html][prototypes/2026-07-19-music-config-ui-remodel-prototype-1.html]].  It uses
+concept 30 as the physical shell and overlays the changing local-playlist and
+radio state.  The paired [[file:prototypes/2026-07-19-music-config-ui-remodel-benchmark.org][librsvg benchmark]] makes the three-region production
+renderer mandatory: full-instrument meter refresh missed the budget, while the
+lower control tile passed.
+
+* Inputs
+
+- [[file:../../docs/specs/2026-07-06-fancy-music-player-ui-spec.org][Existing music player UI spec]]
+- [[file:../../docs/specs/music-config-without-emms-spec.org][EMMS-free architecture spec]]
+- [[file:../../../code/archsetup/docs/prototypes/panel-widget-gallery.html][Dupre panel-widget gallery]]
+- [[file:../../../code/archsetup/docs/prototypes/waybar-redesign-prototype.html][Waybar redesign prototype]]
+
+* Prototype Directions
+
+1. Gold-pinstripe tuner console
+2. Touring-car instrument cluster
+3. Chronometer record deck
+4. Studio rack and tape machine
+5. Perpetual-calendar salon receiver
+6. Mission-control radio navigator
+
+* High-Fidelity Concept Boards — Iteration Two
+
+The second pass deliberately separates visual design from implementation.  These
+boards establish materials, lighting, silhouette, hierarchy, and instrument
+semantics before the selected direction is translated into Dupre components.
+
+1. [[file:concepts/01-champagne-receiver.png][Champagne Receiver]]
+2. [[file:concepts/02-le-mans-night-cluster.png][Le Mans Night Cluster]]
+3. [[file:concepts/03-geneva-playback-chronograph.png][Geneva Playback Chronograph]]
+4. [[file:concepts/04-mastering-room-reel-console.png][Mastering Room Reel Console]]
+5. [[file:concepts/05-perpetual-calendar-salon.png][Perpetual Calendar Salon]]
+6. [[file:concepts/06-transatlantic-broadcast-navigator.png][Transatlantic Broadcast Navigator]]
+7. [[file:concepts/07-functional-black-glass-receiver.png][Functional Black Glass Receiver]]
+8. [[file:concepts/08-functional-black-glass-flipped.png][Functional Black Glass Receiver — flipped]]
+9. [[file:concepts/09-functional-black-glass-retro.png][Functional Black Glass Receiver — retro]]
+10. [[file:concepts/10-warm-black-glass-player-volume.png][Warm Black Glass Receiver — player volume]]
+11. [[file:concepts/11-illuminated-black-glass-controls.png][Illuminated Black Glass Receiver — varied controls]]
+12. [[file:concepts/12-consolidated-functional-receiver.png][Consolidated Functional Receiver]]
+13. [[file:concepts/13-black-silver-chronograph-receiver.png][Black and Silver Chronograph Receiver]]
+14. [[file:concepts/14-corrected-luxury-chronograph-receiver.png][Corrected Luxury Chronograph Receiver]]
+15. [[file:concepts/15-champagne-brass-digital-hifi.png][Champagne-Brass Digital Hi-Fi]]
+16. [[file:concepts/16-champagne-aluminum-radio-groups.png][Champagne-Aluminum Radio Groups]]
+17. [[file:concepts/17-dupre-coltrane-scrollbar.png][Dupre Coltrane Scrollbar State]]
+18. [[file:concepts/18-dupre-branding-control-study.png][Dupre Branding and Compact-Control Study]]
+19. [[file:concepts/19a-dupre-playlist-state.png][Dupre Playlist State]] / [[file:concepts/19b-dupre-radio-state.png][Dupre Radio State]]
+20. [[file:concepts/20-dupre-playlist-radio-comparison.png][Dupre Long-Playlist / Compact-Radio Comparison]] ([[file:concepts/20a-dupre-long-playlist.png][playlist source]] / [[file:concepts/20b-dupre-compact-radio.png][radio source]])
+21. [[file:concepts/21-dupre-semantic-controls-comparison.png][Dupre Semantic-Controls Comparison]] ([[file:concepts/21a-dupre-mode-lamps-playlist.png][playlist source]] / [[file:concepts/21b-dupre-two-on-air-radio.png][radio source]])
+
+- [[file:concept-board.html][Open the six-board review sheet]]
+
+The original functional HTML pass remains at
+[[file:music-svg-directions.html][music-svg-directions.html]] for interaction and
+workflow reference; it is not the material-design target.
+
+* Current Design Decisions
+
+- Beauty must communicate real application function; no decorative controls.
+- Preserve the Champagne Receiver's now-playing, progress, transport, queue,
+  and playlist-management regions as the functional nucleus.
+- Remove AM/FM, tone, speaker, loudness, power, and other receiver controls
+  without a =music-config.el= command or state.
+- Target a compact panoramic panel in the bottom portion of a predominantly
+  portrait Emacs frame; playlist and player controls must sit side by side.
+- Prefer a neutral black-glass, warm-meter, polished-chrome language with
+  restrained warm metal and tactile black leather; keep whitespace low without
+  returning to clutter.  Do not use cold blue illumination.
+- Permanent radio controls map only to the implemented name and tag searches.
+  Manual URL entry remains an Emacs command rather than faceplate hardware.
+- Place the player on the left and playlist on the right.
+- The dots around the volume knob are a cumulative illuminated scale driven by
+  actual volume; the last lit dot is the precise pointer.  They never chase or
+  flash.
+- The knob controls dedicated mpv player volume rather than the system mixer.
+  Persist the level in Emacs, pass it to each newly started per-track mpv
+  process, and read/write mpv's =volume= property over the existing IPC socket.
+- Drive the stereo VU meter from real mpv audio analysis.  A labeled lavfi
+  =astats= filter exposes per-channel RMS and peak readings through
+  =af-metadata/<label>=; apply analog needle ballistics in the UI.  Treat the
+  meter as pre-volume program level so it describes the recording independently
+  of listening volume.
+- Prefer neutral black glass, chrome, and pebbled leather with warm ivory,
+  amber, and restrained jewel illumination; avoid cold blue light.
+- All playlist and now-playing typography is self-luminous behind smoked glass,
+  never merely engraved.  Compose album metadata conditionally from album,
+  label, year/date, genre, composer, performer, track, and disc; omit missing
+  values and separators, and never display =Unknown= or =N/A=.
+- Do not display a numeric player-volume value.  The physical knob pointer,
+  ticks, and cumulative lamps communicate level.
+- Omit manual URL entry and playlist reload from the permanent faceplate; the
+  commands remain available through Emacs.
+- For seekable tracks, the progress indicator is an interactive slider.  For a
+  non-seekable live stream, replace the entire slider/time treatment with an
+  =ON AIR= state; never show both states together.
+- With the slider handling seeking, transport contains only previous,
+  play/pause, stop, and next.  Labels live on the faceplate beneath compact
+  physical controls.
+- Put repeat, single, random, and consume lamps/toggles on the lower player
+  control rail.  Put radio name/tag search there as well.  The right side is
+  reserved for the large playlist and visible playlist actions.
+- Present now-playing metadata as separate illuminated lines and omit the
+  =NOW PLAYING= caption.
+- Use one consistent family of small round chrome transport pushbuttons.  Mode
+  controls use four identical low-profile luxury latching pushbuttons with
+  polished-steel collars, smoked-black enamel centers, and integrated faceted
+  jewels: pressed and lit means on; raised and dark means off.  Bat toggles are
+  prohibited because they read as utilitarian rather than luxury hardware.
+- Build depth with a realistic two-step polished-chrome bezel and dark gasket
+  around both the VU meter and complete player where they meet black leather.
+  Avoid excessive parallel chrome rails.
+- Use a coherent brushed-silver lower control faceplate.  Chrome and silver
+  dominate; brass remains a hairline accent.
+- The playlist shows roughly fourteen compact one-line rows with artist inline,
+  an explicit illuminated playlist name, and square matte-anodized action keys.
+  Visible actions are add, new, load, save, and delete.  Delete is a normal
+  matte-red key; edit is not permanent faceplate functionality.
+- Put the =ON AIR= lamp inside the radio control bank.  It remains dark for a
+  local file and lights only for a live radio source.
+- Do not use the drum/tape roller as a saved-playlist selector.  Its unlabeled
+  adjacent digits were mistaken for a counter and its purpose was not legible;
+  the labeled =LOAD= action is sufficient.  If a drum mechanism is revisited,
+  it must expose a unique function that is understood without explanation.
+- Volume segments are identical and evenly spaced; light continuously from the
+  rightmost minimum through and including the pointer-aligned segment.
+- Allocate approximately 42 percent of usable width to the player and 58
+  percent to the playlist.  When all fourteen rows fit, show neither a scrollbar
+  nor another redundant track-count mechanism.
+- Remove the current-track =01 / 14= complication entirely: the highlighted
+  playlist row communicates the same information more directly.
+- Put the mode/status/radio rail above the transport rail.  Align =ON AIR= with
+  the other mode jewels and give it the same visible diameter, while retaining
+  its non-pressable status-only behavior.
+- Transport hardware is a coherent bank of four shallow, closely spaced,
+  machined-metal hi-fi piano keys rather than separate round buttons.
+- Use distinctly digital, self-luminous typography for player metadata and the
+  playlist; keep faceplate labels engraved rather than digital.
+- A pale brushed champagne-brass control faceplate is viable so long as black
+  glass and polished chrome remain dominant and the brass never becomes bronze,
+  copper, brown, or sepia.
+- Prefer authentic pale champagne-anodized aluminum over brass: fine horizontal
+  brushing, cool metallic highlights, and crisp machined edges retain warmth
+  while matching real high-end audio construction.
+- Fasteners are small, discreet, countersunk details rather than prominent
+  corner bolts.
+- Make radio membership explicit on the faceplate.  A restrained engraved
+  =RADIO= heading and hairline bracket span exactly =ON AIR=, =BY NAME=, and
+  =BY TAG=; a separate =PLAY MODES= heading owns repeat, single, random, and
+  consume.  Do not use another heavy enclosure.
+- Mode controls combine an unmistakably pressable shallow aluminum cap with a
+  smaller inset jewel.  =ON AIR= uses the same jewel diameter and baseline but
+  no cap or travel, preserving its status-only meaning.
+- For a seekable track, slider position must be computed from elapsed/duration
+  rather than independently illustrated.  Concept 16 still places the handle
+  too far right for =02:37 / 05:35=; implementation must place it at 47 percent.
+- Color carries stable semantics: warm ivory is ordinary information; amber is
+  active playback, progress, and volume; green is an enabled playback mode;
+  neutral silver is keyboard focus; red is reserved for delete, live =ON AIR=,
+  and faults.  Do not color ordinary playlist actions arbitrarily.
+- Use conventional volume geometry: minimum is lower left, maximum lower right,
+  and illumination advances clockwise from minimum through the knob pointer.
+  Segments after the pointer toward maximum remain dark.
+- Playing state must be physical as well as chromatic: the =PLAY/PAUSE= key sits
+  visibly lower with its shadow withdrawn; a restrained amber edge is secondary
+  confirmation.
+- The faceplate may carry one modest maker's plaque: coarse black crosshatch
+  that survives small SVG rendering, with a raised cursive =Dupre= wordmark.
+  It is a badge, not a fake speaker grille, and must not justify extra height.
+- For lists longer than the fourteen-row viewport, show a narrow functional
+  scrollbar.  Thumb length represents =visible rows / total rows= and position
+  represents the top visible row.  Concept 17 demonstrates the long-list state
+  but its generated thumb remains shorter than the required 14/32 (44 percent).
+- The next review set is a matched two-state pair: one seekable normal-playlist
+  player and one live-radio player using identical hardware.  The radio state
+  replaces slider and times with =ON AIR=, lights the red broadcast lamp, and
+  conditionally shows only available station/stream metadata.
+- Do not assume short metadata.  Recover display width by reducing album art and
+  VU width roughly 20 percent; allow modest automatic font condensation before
+  ellipsis.  Do not marquee by default.  Full truncated values remain available
+  through normal Emacs help/minibuffer affordances.
+- Compact playback modes into a 2×2 internally illuminated-legend block.  The
+  engraved symbol itself glows; do not add a separate lamp or oversized lip.
+  Keep explicit micro-labels because =CONSUME= has no universal symbol.
+- Place a similarly compact radio block immediately beside play modes: =NAME=
+  and =TAG= momentary buttons above a flush =ON AIR= window.  This leaves the
+  right side visually quiet around volume.
+- Branding is part of the faceplate surface, never a plate atop another plate.
+  Concept 18 compares: black-enamel inscription (A), bright-cut inscription
+  (B), same-plane crosshatched negative-space field (C), and direct-mounted
+  chrome script without backing (D).
+- Select concept 18 option D: a moderately enlarged direct-mounted chrome
+  cursive =Dupre= script at the faceplate's upper left, with no backing.  Put
+  compact proportional =NAME=, =TAG=, and =ON AIR= radio controls below it.
+- Transport adopts the same internally illuminated-legend construction as the
+  mode keys.  The symbol itself is translucent: amber while active, dim ivory
+  while inactive.  Do not add a separate under-key light strip.  Concepts 19a/b
+  still contain a generated amber strip beneath Play and are non-authoritative
+  on that detail.
+- Treat local and live playback as matched states of identical hardware.  A
+  seekable file shows slider and times and keeps =ON AIR= dark; a live stream
+  removes all seek/time hardware, displays =ON AIR / LIVE STREAM= in that region,
+  and lights the faceplate broadcast window red.
+- Scrollbar thumbs remain mathematical UI, not illustrative ornament: 14/32 is
+  44 percent and 14/18 is 78 percent.  Both generated concept-19 thumbs are too
+  short despite their otherwise useful long-list demonstrations.
+- Reserve a clear brand field at the far left of the faceplate and optically
+  center =Dupre= within that invisible rectangle.  All functional controls stay
+  outside it.
+- Immediately right of the brand field, stack =NAME=, =TAG=, and =ON AIR= in a
+  narrow vertical Radio column, right-justified tightly against an even smaller
+  2×2 Play Modes block.  Volume retains the quiet right-hand field.
+- Transport state is symbol-only illumination.  The area beneath every key is
+  plain faceplate plus its engraved label; no amber strip, lamp, or glow.
+- Stress-test metadata with realistic long values.  Concept 20 uses =A CHICKEN
+  WITH ITS HEAD CUT OFF= / =THE MAGNETIC FIELDS= and the 69-track =69 LOVE SONGS=
+  list without marquee or truncation.
+- Review normal and live states together by composing their independently
+  generated panoramic sources.  This preserves the true bottom-dock form factor
+  while making both states simultaneously visible.
+- Concept 20's scrollbar rendering remains non-authoritative: the 14/69 playlist
+  thumb should be 20 percent, and the 14/18 radio thumb should be 78 percent and
+  clearly visible.  The image model made the former too short and omitted the
+  latter's filled thumb.
+- Live playback contains exactly two =ON AIR= presentations: a red bottom-most
+  metadata line and the current station row.  Remove the faceplate status window
+  and any centered banner or =LIVE STREAM= caption.
+- The compact controls form a measured 3×2 grid above transport.  Every small
+  control is half a transport key's width and equal to its height; stacked Radio
+  occupies column one and the 2×2 Play Modes block columns two and three.  The
+  grid's right edge aligns with =NEXT=.
+- Radio =NAME= and =TAG= are momentary search buttons with magnifying-glass
+  glyphs and no lamps.  Persistent playback modes use a separate tiny status
+  lamp above a compact champagne/brass actuator, borrowing the Heston preset
+  language without numeric legends.
+- Branding is a true faceplate aperture: champagne aluminum is cut away to
+  reveal a recessed dark woven/diamond-textured subplate with centered warm-white
+  cursive =Dupre=.  It is not a badge attached atop the faceplate.
+- =PLAY/PAUSE= glows green through its symbol while playing.  Previous, Stop, and
+  Next stay neutral and merely brighten ivory during activation.
+- Volume uses a deeply knurled black body and machined champagne/brass cap with no
+  pointer.  The cumulative lamp arc is the sole indicator and its final lit
+  segment communicates the level.
+- =ADD= and =NEW= may share a restrained OD-green anodized tint.  =LOAD= and
+  =SAVE= remain neutral; =DELETE= remains matte red.
+- Concept 21 again renders scrollbar fill incorrectly; the exact 20/78 percent
+  requirements remain implementation constraints rather than image guidance.
+- Tone =DELETE= down from saturated red to muted, low-saturation oxblood or
+  burgundy.  It remains unmistakably destructive without becoming the loudest
+  object in the application.
+- Playback modes use four small circular brass pushbuttons mounted directly on
+  the metal.  Remove the black switch tiles and separate lamps; illuminate only
+  a thin circumference around an active brass actuator.  A single hairline
+  engraved boundary contains the 2×2 group and its geometry aligns with the
+  transport grid ending at =NEXT=.
+- Split the lower player into two genuine material zones rather than stacking
+  branding plates.  The left 28--32 percent is uninterrupted black woven grille
+  continuous with the chassis; center a restrained warm-ivory/champagne cursive
+  =Dupre= directly in that negative space with no border, plaque, or fasteners.
+  The right 68--72 percent is one compact self-contained champagne-anodized
+  control island containing Radio, Play Modes, transport, and Volume.
+- Concept 22 validates this identity-bay/control-island architecture in matched
+  playlist and radio states.  Its compact balance is authoritative; the image
+  model's engraved Play Modes boundary does not yet reach the =NEXT= alignment
+  datum, so the exact grid alignment remains an implementation constraint.
+- Lock the concept-22 champagne faceplate and every component mounted on it:
+  Radio keys, direct-mounted brass Play Modes matrix and engraved boundary,
+  pointerless cumulative Volume dial, transport keys, fasteners, typography,
+  materials, spacing, and illumination semantics.  Subsequent exploration may
+  change surrounding glass and layout, but not this control component.
+- Swap the information and identity zones.  Put reduced album/station art and
+  separate-line metadata in the lower black-glass bay beside the locked
+  faceplate.  Put =Dupre= directly on the upper black glass with no backing
+  texture, beside substantially larger VU meters.
+- Light each VU face with a subtle warm pool rising from a hidden lamp directly
+  below its =VU= legend.  The fixture is not visible; it only explains the
+  meter's restrained internal illumination.
+- Give the player approximately 49 percent of total width and the list 51
+  percent.  Keep fourteen rows; ellipsize only the title/artist field when it
+  exceeds its allocation, while preserving the row number, current-state marker,
+  duration, and live status.
+- In radio state, place the first approved =ON AIR= directly underneath the
+  reduced station art.  The second remains in the active station row; all
+  inactive status cells are empty.  Concept 23 is authoritative for this
+  swapped-information arrangement.
+- Divide the player itself into two equal-height tiers.  The upper tier is one
+  continuous black-glass identity/information display; =Dupre= stays at far left
+  while reduced art, separate-line metadata, and conditional seek information
+  occupy the remaining width.
+- The lower tier is one uninterrupted full-width champagne-brass faceplate, not
+  a small plate stacked over another material.  Recess modest dual VU meters
+  into its left side and integrate the locked Radio, Play Modes, Volume, and
+  transport hardware on its right with proportional spacing.
+- Return the VU meters to approximately concept-22 scale or slightly smaller.
+  They are black instrument windows with narrow chrome bezels physically set
+  into the brass; their concealed lower lamps remain a soft wash rather than a
+  visible point source.
+- Concept 24 demonstrates this full-brass lower tier in matched playlist and
+  radio states.  State-dependent information changes only in the upper glass
+  and control illumination; the underlying manufactured unit is identical.
+- Remove fasteners and corner radii from every interior surface.  The upper
+  information glass, lower brass faceplate, and right playlist are three flush
+  rectangular fields separated only by one horizontal and one vertical rule.
+  Rounded depth remains exclusively in the outer leather/chrome chassis.
+- Align the left edge of album or station art exactly with the left edge of the
+  stacked Radio buttons below.  This is a shared vertical datum and reserves a
+  larger uninterrupted field for =Dupre=.  Confine local seek time, line, and
+  handle to the information block beginning at that datum; nothing extends
+  beneath the wordmark.  Live =ON AIR= occupies the corresponding position below
+  station art without a seek affordance.
+- Render ordinary album metadata and inactive list rows in soft neutral white.
+  Amber is reserved for the list header/rule and the currently selected row;
+  inactive rows have no lamps, glow, dots, or amber tint.
+- VU windows are flush or slightly recessed apertures in the brass, with only a
+  hairline inlaid edge and inner shadow.  They must never read as raised boxes or
+  chrome housings attached to the faceplate.
+- Concept 25 demonstrates the seamless square-panel and white-type direction.
+  The image generator still places art left of the Radio datum despite a
+  targeted correction; exact shared-edge alignment remains authoritative for
+  the implemented SVG.
+- Reintroduce rounded depth selectively rather than through internal cards.  The
+  two-step chrome trim encircling the complete unit has clearly rounded corners,
+  and the flush VU apertures may use modest rounded corners.
+- Rename the maker signature to a two-line =Dupre Studios=: large cursive
+  =Dupre= above smaller widely tracked uppercase =STUDIOS=, centered as one
+  optical lockup directly on the black glass.
+- Move album/station art, metadata, and the conditional seek/live treatment
+  farther right to enlarge the calm manufacturer field.
+- Remove the upper vertical player/list separator entirely.  Branding, program
+  information, and playlist share one continuous black-glass plane; header rules
+  and column alignment alone establish list hierarchy.
+- Define the lower brass faceplate as a distinct receiver module without adding
+  fasteners: a narrow recessed dark groove followed by slim deep chrome encircles
+  all four sides of the brass.  Its surround uses graceful rounded corners while
+  the single brass field remains uninterrupted.
+- Concept 26 demonstrates the =Dupre Studios= lockup, continuous upper glass,
+  rounded outer chrome, rounded flush VU apertures, and fully encircled brass
+  control module in matched playlist and radio states.
+- Remove the complete unit's outer metal trim.  The exterior silhouette is a
+  softly rolled black-leather edge; the leather terminates directly against the
+  continuous black glass through a narrow compressed dark seam, with no metal
+  between those materials.
+- Convert every remaining metal edge from chrome to warm brass.  This includes
+  the bead encircling the lower faceplate and the hairline rounded VU aperture
+  edges.  No silver/chrome edging remains anywhere.
+- The artwork, stacked Radio keys, and =PREV= transport key share one exact left
+  edge.  Treat this as a single vertical construction datum; the seek assembly
+  begins there as well and remains below only the art/metadata block.
+- Make only the playlist/radio header row an analog instrument card: darker
+  coffee-and-cream stock behind glass with dark espresso lettering.  Four hidden
+  warm lamps above it—one at each corner and two evenly spaced between—cast
+  broad subtle pools downward.  Neither bulbs nor hotspots are visible, and all
+  list rows below remain black with white/selected-amber type.
+- Concept 27 demonstrates the leather-to-glass junction, brass-only edging, and
+  analog illuminated header in matched playlist/radio states.  Its artwork is
+  visually close to the control datum; implementation must make the shared edge
+  mathematically exact.
+- Adopt Craig's GIMP faceplate composition as the control-layout authority.
+  Divide usable brass width into approximately 44/25/31 percent zones: dual VUs
+  over transport at left, Play Modes over a horizontal Name/Tag Radio pair at
+  center, and Volume vertically centered at right.  Use shared baselines,
+  consistent label offsets, and even component gaps so the plate is full without
+  crowding.
+- The four transport keys span roughly the combined width of the two VUs and sit
+  directly beneath them.  The center controls form two aligned modules: 2×2
+  direct-mounted brass modes above and two black radio search keys below.
+- Increase the Volume control to the diameter in Craig's GIMP arrangement, but
+  make it a low-profile frontal instrument: shallow knurled skirt, broad flush
+  machined brass cap, minimal shadow, and no domed, magnified, or fisheye look.
+  Center the complete knob/arc vertically and put =VOLUME= beneath it.
+- Volume lamps return to unmistakable warm amber/gold.  Cumulative lit segments
+  must never wash out to white, cream, coral, or pink; unlit segments remain
+  dark.
+- Concept 28 demonstrates the proportional three-zone control layout and flatter
+  enlarged Volume dial in matched playlist and radio states.
+- Finalize the program-information construction line by moving the artwork and
+  all metadata right as one rigid group until the artwork's left edge is exactly
+  collinear with the left engraved boundary of the Radio group below.  The local
+  seek treatment begins on that same datum: move its left time and left endpoint
+  with the information group, keep its right time and endpoint fixed, and shorten
+  the run accordingly.
+- The circular seek thumb is warm polished brass, not chrome or silver.  Its
+  restrained highlight may distinguish it from the amber progress line without
+  introducing a cold-metal exception to the brass-only material language.
+- Treat Craig's manually refined 1916×821 playlist board, saved as
+  =concepts/30a-dupre-studios-user-refined-playlist.png=, as the near-final
+  visual authority.  It resolves the upper-panel composition: the larger calm
+  =Dupre Studios= field, right-shifted artwork and separate metadata lines, a
+  contained shorter seek run with brass thumb, and a playlist-dominant right
+  side all coexist without crowding.
+- Preserve the board's proportional lower deck: paired illuminated VUs and one
+  coherent transport family at left, compact direct-mounted Play Modes and Radio
+  Search controls in the center, and the large vertically centered low-profile
+  Volume instrument at right.
+
+* Concept 14 Review Notes
+
+The four matching jeweled latching mode buttons, simplified two-step chrome
+bezel, fourteen-row playlist, explicit playlist name, one-line track rows, and
+clearly labeled action keys move the design toward the selected language.  The
+board still contains three image-generation errors that are not design changes:
+
+- The player remains wider than the playlist instead of the required 42/58
+  allocation.
+- The volume arc stays illuminated beyond the knob pointer instead of ending at
+  and including the pointer-aligned segment.
+- =COLUMBIA= and =1959= share a line instead of occupying separate conditional
+  metadata lines.
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