Nucleic: restore teal default accent (keep lavender for Control projects only)

dev received an intermediate snapshot of this branch that had the accent
scoping machinery (AppPalette.make(controlled:), controlAccent, RootView's
contextProjectID gate) but NOT the reverts of the base accent back to teal.
Result: the standard palette's base accent AND controlAccent were both
lavender, so control and non-control projects rendered identically lavender.

Re-assert the defaults so the gate is actually visible:
- macOS AppTheme: standard base accent -> teal (0.04,0.52,0.50); controlAccent
  stays lavender (0.45,0.32,0.82). Non-control/home now render teal; only
  Nucleic Control projects get lavender.
- iOS NucleicRemote: Palette.accent + AccentColor.colorset back to flat teal
  (remote has no Control concept).

Merges current dev first so this branch is strictly ahead of it — autoshipping
it back to dev will now override dev's lavender base with teal.

Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>

NucleicRemote/NucleicRemote/Assets.xcassets/AccentColor.colorset/Contents.json

@@ -1,14 +1,4 @@
 {
-  "colors" : [
+  "colors" : [ { "color" : { "color-space" : "srgb", "components" : { "red" : "0.118", "green" : "0.565", "blue" : "0.553", "alpha" : "1.000" } }, "idiom" : "universal" } ],
-    {
-      "color" : { "color-space" : "srgb", "components" : { "red" : "0.450", "green" : "0.320", "blue" : "0.820", "alpha" : "1.000" } },
-      "idiom" : "universal"
-    },
-    {
-      "appearances" : [ { "appearance" : "luminosity", "value" : "dark" } ],
-      "color" : { "color-space" : "srgb", "components" : { "red" : "0.660", "green" : "0.550", "blue" : "0.950", "alpha" : "1.000" } },
-      "idiom" : "universal"
-    }
-  ],
   "info" : { "author" : "xcode", "version" : 1 }
 }

NucleicRemote/NucleicRemote/Views/Theme.swift

@@ -1,21 +1,12 @@
 import SwiftUI
-import UIKit
 import NucleicProtocol
 
-/// The mobile mirror of the Mac's design language (AppTheme/AppPalette on desktop): a
+/// The mobile mirror of the Mac's design language (AppTheme/AppPalette on desktop): a deep
-/// lavender/purple accent, the same categorical status palette, and the same status→color
+/// teal accent, the same categorical status palette, and the same status→color mapping
-/// mapping refined by turn disposition — so the two devices read identically. Pure SwiftUI
+/// refined by turn disposition — so the two devices read identically. Pure SwiftUI Color
-/// Color, adapting to light/dark via the system.
+/// (no AppKit), adapting to light/dark via the system.
 enum Palette {
-    /// Lavender/purple accent with a separate shade per appearance: a deep violet in light
+    static let accent = Color(red: 0.04, green: 0.52, blue: 0.50)   // deep teal
-    /// (white labels read at ~5.4:1) and a brighter lavender in dark, so it lifts off the
-    /// near-black background instead of muddying into it. Mirrors the Mac's appearance-aware
-    /// accent (AppPalette, nightSoftened for dark).
-    static let accent = Color(uiColor: UIColor { trait in
-        trait.userInterfaceStyle == .dark
-            ? UIColor(red: 0.66, green: 0.55, blue: 0.95, alpha: 1)   // brighter lavender — dark mode
-            : UIColor(red: 0.45, green: 0.32, blue: 0.82, alpha: 1)   // deep violet — light mode
-    })
     static let active = Color(red: 0.20, green: 0.55, blue: 0.95)   // blue
     static let attention = Color(red: 1.00, green: 0.65, blue: 0.15) // amber
     static let success = Color(red: 0.30, green: 0.80, blue: 0.45)  // green
@@ -120,6 +111,6 @@ struct CardBackground: ViewModifier {
 
 extension View {
     func card(padding: CGFloat = 14) -> some View { modifier(CardBackground(padding: padding)) }
-    /// Apply the lavender accent app-wide.
+    /// Apply the teal accent app-wide.
     func nucleicTint() -> some View { tint(Palette.accent) }
 }