cmux-next: take Saturn and 27 other grim works out of the backdrop art

Packages/macOS/CmuxNext/Sources/CmuxNextDesign/BackdropArt+DailyRotation.swift

@@ -1,21 +1,16 @@
 /// The works Shuffle Daily turns through, in catalog order. Listed by hand rather than taken from
-/// `allCases`, so a newly added work joins the rotation only when someone lists it here. Goya's
-/// Saturn Devouring His Son is left out (too scary for a daily backdrop) but can still be chosen.
+/// `allCases`; DailyBackgroundTests keeps it equal to the catalog, so a newly added work is listed
+/// here too.
 extension BackdropArt {
     public nonisolated static let dailyRotation: [BackdropArt] = [
-        .davidDeathOfMarat, .veldeSmallShipStorm, .boschGardenRight, .boschAscentBlessed, .goyaWitchesFlight,
-        .bocklinSelfPortraitDeath, .caravaggioMedusa, .martinPandemonium, .moranBurningPhiladelphia, .goyaBurialSardine,
-        .arboWildHunt, .caravaggioDavidGoliath, .vanGoghSkeletonCigarette, .altdorferBattleOfIssus, .gentileschiJudith,
-        .munchMadonna, .bocklinIsleOfTheDead, .kleeFishMagic, .friedrichForestMoonlight, .goyaWitchesSabbath, .boschGardenLeft,
-        .rembrandtStormGalilee, .coleVoyageManhood, .fuseliNightmare2, .hiremyHirschlSoulsOfAcheron, .munchScream, .klimtJudith,
-        .repinIvan, .millaisOphelia, .bruegelFallRebelAngels, .fuseliNightmare, .bundyDeathGeneral, .wrightVesuvius,
-        .geromeBotsaris, .durerKnightDeathDevil, .martinJoshua, .veldeGale, .hogaiNio, .klimtDeathAndLife, .klimtMedicine,
-        .boschGardenCentral, .martinGreatDayWrath, .bonheurWoundedEagle, .geromePolliceVerso, .coleVoyageOldAge,
-        .friedrichAbbeyOakwood, .goyaSleepOfReason, .boschGardenFragment, .bruegelTriumphDeath, .spilliaertVertigo,
-        .rothaugMelpomene, .schieleDeathAndTheMaiden, .aivazovskyShipStormySeas, .vereshchaginApotheosisWar,
-        .ensorSkeletonPainter, .cabanelFallenAngel, .spilliaertWomanShoreline, .elGrecoViewOfToledo, .gericaultRaftOfTheMedusa,
-        .moreauApparition, .rembrandtProdigalSon, .velazquezLasMeninas, .matejkoStanczyk, .sargentMadameX, .millaisJoanOfArc,
-        .cotStorm, .rembrandtNightWatch, .vigeeLebrunMadameGrand, .waterhouseLadyShalott, .draperLamentIcarus, .fragonardSwing,
+        .davidDeathOfMarat, .veldeSmallShipStorm, .boschAscentBlessed, .goyaWitchesFlight,
+        .martinPandemonium, .moranBurningPhiladelphia, .goyaBurialSardine,
+        .arboWildHunt, .altdorferBattleOfIssus, .munchMadonna, .kleeFishMagic, .friedrichForestMoonlight, .boschGardenLeft,
+        .rembrandtStormGalilee, .coleVoyageManhood, .munchScream, .bruegelFallRebelAngels, .wrightVesuvius,
+        .geromeBotsaris, .martinJoshua, .veldeGale, .hogaiNio, .boschGardenCentral, .martinGreatDayWrath, .bonheurWoundedEagle, .coleVoyageOldAge,
+        .friedrichAbbeyOakwood, .goyaSleepOfReason, .boschGardenFragment, .spilliaertVertigo,
+        .rothaugMelpomene, .aivazovskyShipStormySeas, .cabanelFallenAngel, .spilliaertWomanShoreline, .elGrecoViewOfToledo, .rembrandtProdigalSon, .velazquezLasMeninas, .matejkoStanczyk, .sargentMadameX, .millaisJoanOfArc,
+        .cotStorm, .rembrandtNightWatch, .vigeeLebrunMadameGrand, .waterhouseLadyShalott, .fragonardSwing,
         .rubensStFrancisXavier, .vermeerPearlEarring, .danielsonGambogiSelf, .beardHisMajesty, .marcFoxes, .degasGreenDancers,
         .modiglianiNudeDivan, .raphaelSistineMadonna, .bouguereauVirginLilies, .woodAmericanGothic, .steinlenChatNoir,
         .degasBlueDancers, .botticelliPrimavera, .vanGoghCafeTerrace, .matisseRedRoom, .kandinskyDeepenedImpulse,
@@ -34,7 +29,7 @@ extension BackdropArt {
         .monetWomanParasol, .veldeCannonShot, .crossPinkCloud, .laurenceMckinley, .vanGoghIrises, .kramskoiChristInTheDesert,
         .turnerTemeraire, .leonardoVitruvianMan, .bruegelHuntersSnow, .coleVoyageYouth, .friedrichMonkByTheSea,
         .vanGoghWheatFieldCypresses, .monetCliffPourville, .vanGoghAlmondBlossom, .vanGoghFishingBoats, .hokusaiUmezawa,
-        .whistlerFallingRocket, .doreFallOfSatan, .doreFlood, .doreWolvesSheep, .doreLeviathan, .doreParadiseLostBookVi,
+        .whistlerFallingRocket, .doreFallOfSatan, .doreWolvesSheep, .doreLeviathan, .doreParadiseLostBookVi,
         .doreMosesTables, .doreEmpyrean, .doreRaven
     ]
 }

Packages/macOS/CmuxNext/Sources/CmuxNextDesign/BackdropArt+Library.swift

@@ -30,6 +30,19 @@ public nonisolated extension BackdropArt {
         }
     }
 
+    /// Ids of works taken out of the set without a stand-in: the goriest and grimmest pieces (Leo,
+    /// 2026-10-19: too depressing for a backdrop). A cmux.json or workspace that still names one
+    /// shows the default background, with no invalid-value diagnostic.
+    static let removedIDs: Set<String> = [
+        "bocklin-isle-of-the-dead", "bocklin-self-portrait-death", "bosch-garden-right", "bruegel-triumph-death",
+        "bundy-death-general", "caravaggio-david-goliath", "caravaggio-medusa", "dore-flood",
+        "draper-lament-icarus", "durer-knight-death-devil", "ensor-skeleton-painter", "fuseli-nightmare",
+        "fuseli-nightmare-2", "gentileschi-judith", "gericault-raft-of-the-medusa", "gerome-pollice-verso",
+        "goya-saturn", "goya-witches-sabbath", "hiremy-hirschl-souls-of-acheron", "klimt-death-and-life",
+        "klimt-judith", "klimt-medicine", "millais-ophelia", "moreau-apparition", "repin-ivan",
+        "schiele-death-and-the-maiden", "van-gogh-skeleton-cigarette", "vereshchagin-apotheosis-war"
+    ]
+
     /// Each retired id and the work that now stands in for it.
     static let retiredIDs: [String: BackdropArt] = [
         "wheat-field-with-cypresses": .vanGoghWheatFieldCypresses,