feat(palette): MiOS unified color palette -- Hokusai + operator neutrals

Adds the canonical MiOS color palette as a user-defined SSOT in
mios.toml [colors] (defaults to the just-defined globals), applied
across every console / terminal / oh-my-posh / configurator surface.

Palette sources:
  Operator neutrals: #1A407F deep-blue   #E0E0E0 silver
                     #B7C9D7 pale blue-grey #948E8E warm grey
                     #734F39 brown
  Hokusai "Great Wave": #3E7765 wave-green   #E7DFD3 foam-cream
                        #F35C15 sunset-orange #DC271B coral-red
                        #282262 deep-indigo
  Combined: 12 named tokens (bg, fg, accent, cursor, success,
  warning, error, info, muted, subtle, earth, silver) + 16 ANSI
  slot mappings (ansi_0_black through ansi_15_bright_white).

Files:
  usr/share/mios/mios.toml          [colors] block (vendor SSOT)
  etc/profile.d/mios-colors.sh       OSC-4 / OSC-10 / OSC-11 / OSC-12
                                     emitter (every interactive shell
                                     repaints to MiOS palette via xterm
                                     escape sequences). Skipped on
                                     TERM=linux (tty0 has its own
                                     vconsole.conf palette) and on
                                     non-interactive shells.
  usr/share/mios/oh-my-posh/         Rich two-line prompt + right-aligned
    mios.omp.json                    dev language rollup. MiOS-owned
                                     segments (shell/path/git/exec/
                                     status/os/time) recolored to MiOS
                                     palette; language-version segments
                                     (Node/Python/Go/Rust/.NET/kubectl/
                                     AWS) keep brand colors so green-
                                     Node / yellow-Python etc. stay
                                     instantly recognizable.
  usr/share/mios/configurator/      [colors] fieldset added with
    index.html                       <input type="color"> pickers for
                                     every named + ANSI slot. Defaults
                                     populate from COLOR_DEFAULTS when no
                                     existing mios.toml override has
                                     loaded. Two preset buttons:
                                     "Reset to MiOS defaults" and
                                     "Pure Hokusai (no neutrals)".
                                     emitToml section order updated to
                                     place [colors] right after [desktop].

Operator workflow:
  1. Open the configurator (Epiphany on MiOS-DEV via WSLg, or default
     browser fallback).
  2. Edit color pickers under the new "colors" fieldset.
  3. Save -> writes mios.toml [colors] override at
     ~/Downloads/mios.toml (dev VM) or %APPDATA%\MiOS\mios.toml
     (Windows fallback browser).
  4. Next interactive shell -> /etc/profile.d/mios-colors.sh emits
     the OSC sequences -> terminal repaints.
  5. PowerShell on Windows host gets the same palette via the
     Install-WindowsBranding-staged %APPDATA%\MiOS\mios.omp.json.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Author: Kabuki94

etc/profile.d/mios-colors.sh

@@ -0,0 +1,57 @@
+# /etc/profile.d/mios-colors.sh
+#
+# Repaint the operator's terminal to the MiOS unified palette
+# (Hokusai + operator neutrals) on every interactive shell start.
+# Works on every emulator that honors the OSC color escape sequences:
+# xterm, Konsole, Ptyxis, GNOME Terminal, kitty, alacritty, foot,
+# Windows Terminal (via WSL), Ptyxis-via-WSLg, ssh sessions, etc.
+#
+# Sequences emitted:
+#   OSC 4 ; <slot> ; <hex>          set ANSI 16-color palette slot
+#   OSC 10 ; <hex>                  default foreground
+#   OSC 11 ; <hex>                  default background
+#   OSC 12 ; <hex>                  cursor color
+#   OSC 17 ; <hex>                  highlight (selected) background
+#
+# Skipped on:
+#   - non-interactive shells (cron, scripts, sudo non-tty)
+#   - Linux console (TERM=linux) -- tty0 has its own kernel palette
+#     wired via /etc/vconsole.conf; OSC4 doesn't apply there
+#   - Already-applied sessions (idempotent via $MIOS_COLORS_APPLIED)
+#
+# Palette is the SSOT in mios.toml [colors]; sync via `mios-sync-env`
+# if the operator overrides via the configurator HTML.
+
+[ -t 1 ] || return 0
+case "${TERM:-}" in linux|dumb|"") return 0 ;; esac
+[ -n "${MIOS_COLORS_APPLIED:-}" ] && return 0
+
+# Helper: emit OSC <code>;<value> with the trailing BEL terminator.
+_mios_osc() { printf '\033]%s;%s\007' "$1" "$2"; }
+
+# ── ANSI 16-color slots (OSC 4 ; <0..15> ; <#rgb>) ────────────────────────
+_mios_osc 4 '0;#282262'   # 0 black             -- deep indigo
+_mios_osc 4 '1;#DC271B'   # 1 red               -- coral red
+_mios_osc 4 '2;#3E7765'   # 2 green             -- wave green
+_mios_osc 4 '3;#F35C15'   # 3 yellow            -- sunset orange (warning)
+_mios_osc 4 '4;#1A407F'   # 4 blue              -- operator blue
+_mios_osc 4 '5;#734F39'   # 5 magenta           -- brown
+_mios_osc 4 '6;#B7C9D7'   # 6 cyan              -- pale blue-grey
+_mios_osc 4 '7;#E7DFD3'   # 7 white             -- cream
+_mios_osc 4 '8;#948E8E'   # 8 bright black      -- warm grey
+_mios_osc 4 '9;#FF6B5C'   # 9 bright red        -- lighter coral
+_mios_osc 4 '10;#5FAA8E'  # 10 bright green     -- lighter wave-green
+_mios_osc 4 '11;#FF8540'  # 11 bright yellow    -- lighter sunset
+_mios_osc 4 '12;#3D6BA8'  # 12 bright blue      -- lighter operator blue
+_mios_osc 4 '13;#9D7660'  # 13 bright magenta   -- lighter brown
+_mios_osc 4 '14;#E0E0E0'  # 14 bright cyan      -- operator silver
+_mios_osc 4 '15;#FFFFFF'  # 15 bright white     -- pure white
+
+# ── Defaults (foreground / background / cursor / highlight) ───────────────
+_mios_osc 10 '#E7DFD3'   # default fg -- cream
+_mios_osc 11 '#282262'   # default bg -- deep indigo
+_mios_osc 12 '#F35C15'   # cursor     -- sunset orange (high contrast)
+_mios_osc 17 '#1A407F'   # selection  -- operator blue (readable both ways)
+
+unset -f _mios_osc
+export MIOS_COLORS_APPLIED=1

usr/share/mios/configurator/index.html

@@ -168,6 +168,38 @@ <h1>MiOS configurator <span class="v" id="v-meta">schema 1.2.0 / mios 0.2.2</spa
     <div class="checkbox-row"><input type="checkbox" id="f-net-rdp" data-key="network.allow_rdp"><label for="f-net-rdp">allow_rdp (3389/tcp)</label></div>
   </fieldset>
 
+  <fieldset style="grid-column: 1 / -1">
+    <legend>colors (palette applied across every console / terminal / tty / oh-my-posh)</legend>
+    <p style="color: var(--muted); font-size: 12px; margin: 0 0 8px;">
+      Defaults are the MiOS unified palette: operator neutrals
+      (#1A407F deep-blue, #E0E0E0 silver, #B7C9D7 pale blue-grey,
+      #948E8E warm grey, #734F39 brown) combined with Hokusai's
+      "The Great Wave off Kanagawa" (#3E7765 wave-green, #E7DFD3
+      foam-cream, #F35C15 sunset-orange, #DC271B coral-red, #282262
+      deep-indigo). Edit any color below; on save, /etc/profile.d/
+      mios-colors.sh reads these values and emits OSC-4 / OSC-10 /
+      OSC-11 / OSC-12 escape sequences at every interactive shell
+      start so bash / zsh / PowerShell / Windows Terminal / Ptyxis
+      all repaint. The oh-my-posh theme + Cockpit dark theme + the
+      configurator HTML itself read the same SSOT.
+    </p>
+
+    <div style="margin-bottom: 16px; color: var(--accent); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .5px;">
+      Named tokens
+    </div>
+    <div id="colors-named" style="display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 6px 16px;"></div>
+
+    <div style="margin: 16px 0 8px; color: var(--accent); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .5px;">
+      ANSI 16-color slots (terminal palette)
+    </div>
+    <div id="colors-ansi" style="display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 6px 16px;"></div>
+
+    <div style="margin-top: 12px;">
+      <button type="button" id="btn-colors-reset" style="margin-right: 8px;">Reset to MiOS defaults</button>
+      <button type="button" id="btn-colors-hokusai">Pure Hokusai (no neutrals)</button>
+    </div>
+  </fieldset>
+
   <fieldset style="grid-column: 1 / -1">
     <legend>desktop (session + Flatpak applications)</legend>
     <div style="display:grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 12px;">
@@ -242,6 +274,77 @@ <h1>MiOS configurator <span class="v" id="v-meta">schema 1.2.0 / mios 0.2.2</spa
   "guacamole-postgres", "guacd"
 ];
 
+// ── Color palette: defaults + named-token / ANSI-slot definitions ─────────────
+// Defaults match the canonical [colors] block in mios.toml SSOT
+// (Hokusai "Great Wave" + operator neutrals). Configurator color pickers
+// initialize from these unless an existing mios.toml override has loaded.
+const COLOR_DEFAULTS = {
+  bg:          "#282262", fg:          "#E7DFD3",
+  accent:      "#1A407F", cursor:      "#F35C15",
+  success:     "#3E7765", warning:     "#F35C15",
+  error:       "#DC271B", info:        "#1A407F",
+  muted:       "#948E8E", subtle:      "#B7C9D7",
+  earth:       "#734F39", silver:      "#E0E0E0",
+  ansi_0_black:           "#282262",
+  ansi_1_red:             "#DC271B",
+  ansi_2_green:           "#3E7765",
+  ansi_3_yellow:          "#F35C15",
+  ansi_4_blue:            "#1A407F",
+  ansi_5_magenta:         "#734F39",
+  ansi_6_cyan:            "#B7C9D7",
+  ansi_7_white:           "#E7DFD3",
+  ansi_8_bright_black:    "#948E8E",
+  ansi_9_bright_red:      "#FF6B5C",
+  ansi_10_bright_green:   "#5FAA8E",
+  ansi_11_bright_yellow:  "#FF8540",
+  ansi_12_bright_blue:    "#3D6BA8",
+  ansi_13_bright_magenta: "#9D7660",
+  ansi_14_bright_cyan:    "#E0E0E0",
+  ansi_15_bright_white:   "#FFFFFF"
+};
+
+// Pure Hokusai variant: drops the operator neutrals, picks from the wave
+// alone. One-click button in the configurator for operators who want the
+// strict Hokusai aesthetic on their MiOS surface.
+const COLOR_HOKUSAI = {
+  bg: "#282262", fg: "#E7DFD3", accent: "#3E7765", cursor: "#F35C15",
+  success: "#3E7765", warning: "#F35C15", error: "#DC271B", info: "#3E7765",
+  muted: "#948E8E", subtle: "#E7DFD3", earth: "#734F39", silver: "#E7DFD3",
+  ansi_0_black:           "#282262",  ansi_1_red:             "#DC271B",
+  ansi_2_green:           "#3E7765",  ansi_3_yellow:          "#F35C15",
+  ansi_4_blue:            "#282262",  ansi_5_magenta:         "#DC271B",
+  ansi_6_cyan:            "#E7DFD3",  ansi_7_white:           "#E7DFD3",
+  ansi_8_bright_black:    "#948E8E",  ansi_9_bright_red:      "#FF6B5C",
+  ansi_10_bright_green:   "#5FAA8E",  ansi_11_bright_yellow:  "#FF8540",
+  ansi_12_bright_blue:    "#3E7765",  ansi_13_bright_magenta: "#FF6B5C",
+  ansi_14_bright_cyan:    "#E7DFD3",  ansi_15_bright_white:   "#FFFFFF"
+};
+
+const COLOR_NAMED_LABELS = {
+  bg:      "background",   fg:       "foreground", accent:  "accent",
+  cursor:  "cursor",       success:  "success",    warning: "warning",
+  error:   "error",        info:     "info",       muted:   "muted",
+  subtle:  "subtle",       earth:    "earth",      silver:  "silver"
+};
+const COLOR_ANSI_LABELS = {
+  ansi_0_black:           "0  black",
+  ansi_1_red:             "1  red",
+  ansi_2_green:           "2  green",
+  ansi_3_yellow:          "3  yellow",
+  ansi_4_blue:            "4  blue",
+  ansi_5_magenta:         "5  magenta",
+  ansi_6_cyan:            "6  cyan",
+  ansi_7_white:           "7  white",
+  ansi_8_bright_black:    "8  br.black",
+  ansi_9_bright_red:      "9  br.red",
+  ansi_10_bright_green:   "10 br.green",
+  ansi_11_bright_yellow:  "11 br.yellow",
+  ansi_12_bright_blue:    "12 br.blue",
+  ansi_13_bright_magenta: "13 br.magenta",
+  ansi_14_bright_cyan:    "14 br.cyan",
+  ansi_15_bright_white:   "15 br.white"
+};
+
 // ── Flatpak catalog ───────────────────────────────────────────────────────────
 // Every Flatpak referenced anywhere in the MiOS codebase. The 'def' field
 // marks the MINIMAL pre-selected set baked into the image as defaults; all
@@ -364,7 +467,8 @@ <h1>MiOS configurator <span class="v" id="v-meta">schema 1.2.0 / mios 0.2.2</spa
 function emitToml(sections) {
   // Emit a deterministic TOML block in MiOS section order.
   const order = ["meta", "identity", "locale", "auth", "network", "ai",
-                 "desktop", "image", "bootstrap", "profile", "quadlets.enable", "env"];
+                 "desktop", "colors", "image", "bootstrap", "profile",
+                 "quadlets.enable", "env"];
   const lines = [];
   const known = new Set(order);
   // Meta header preamble (matches the canonical template).
@@ -450,6 +554,9 @@ <h1>MiOS configurator <span class="v" id="v-meta">schema 1.2.0 / mios 0.2.2</spa
   }
   // Flatpak checkboxes
   renderFlatpaks();
+  // Color palette pickers (defaults populate from COLOR_DEFAULTS when no
+  // mios.toml override has loaded; values bind two-way into DATA.colors.*).
+  renderColors();
   renderRaw();
 }
 
@@ -477,6 +584,64 @@ <h1>MiOS configurator <span class="v" id="v-meta">schema 1.2.0 / mios 0.2.2</spa
   return s;
 }
 
+// ── Color palette: render the [colors] fieldset and bind inputs ──────────────
+function renderColors() {
+  const named = document.getElementById("colors-named");
+  const ansi  = document.getElementById("colors-ansi");
+  if (!named || !ansi) return;
+  named.innerHTML = "";
+  ansi.innerHTML  = "";
+
+  // Initialize DATA.colors from defaults if missing -- so the saved
+  // mios.toml always carries the full [colors] block even if the
+  // operator never opens this fieldset.
+  DATA.colors = DATA.colors || {};
+  for (const k of Object.keys(COLOR_DEFAULTS)) {
+    if (!DATA.colors[k]) DATA.colors[k] = COLOR_DEFAULTS[k];
+  }
+
+  const renderRow = (parent, key, label) => {
+    const id  = `f-color-${key}`;
+    const val = DATA.colors[key] || COLOR_DEFAULTS[key] || "#000000";
+    const row = document.createElement("div");
+    row.style.cssText = "display: flex; align-items: center; gap: 8px;";
+    row.innerHTML =
+      `<input type="color" id="${id}" value="${val}" style="width: 32px; height: 28px; padding: 0; border: 1px solid var(--border); border-radius: 4px; cursor: pointer;">` +
+      `<label for="${id}" style="margin: 0; flex: 1; font-family: var(--mono); font-size: 12px; color: var(--text);">${label}</label>` +
+      `<code style="font-size: 10px; color: var(--muted); font-family: var(--mono);">${val}</code>`;
+    parent.appendChild(row);
+    const input = row.querySelector("input");
+    const code  = row.querySelector("code");
+    input.addEventListener("input", e => {
+      DATA.colors = DATA.colors || {};
+      DATA.colors[key] = e.target.value.toUpperCase();
+      code.textContent = DATA.colors[key];
+      renderRaw();
+    });
+  };
+
+  for (const [key, label] of Object.entries(COLOR_NAMED_LABELS)) renderRow(named, key, label);
+  for (const [key, label] of Object.entries(COLOR_ANSI_LABELS))  renderRow(ansi,  key, label);
+
+  // Reset buttons (idempotent: re-binds on every renderColors call).
+  const resetBtn = document.getElementById("btn-colors-reset");
+  if (resetBtn) {
+    resetBtn.onclick = () => {
+      DATA.colors = { ...COLOR_DEFAULTS };
+      renderColors();
+      renderRaw();
+    };
+  }
+  const hokusaiBtn = document.getElementById("btn-colors-hokusai");
+  if (hokusaiBtn) {
+    hokusaiBtn.onclick = () => {
+      DATA.colors = { ...COLOR_HOKUSAI };
+      renderColors();
+      renderRaw();
+    };
+  }
+}
+
 function renderFlatpaks() {
   const grid = document.getElementById("flatpak-grid");
   if (!grid) return;

usr/share/mios/mios.toml

@@ -238,6 +238,58 @@ sections = [
     "cockpit-plugins-build", "k3s-selinux-build", "uki",
 ]
 
+# ----------------------------------------------------------------------------
+# [colors] -- MiOS unified palette applied to every console / terminal /
+# tty surface (bash, zsh, PowerShell, Windows Terminal, Ptyxis, Cockpit,
+# the configurator HTML, the oh-my-posh prompt, fastfetch logo color).
+# Sourced from:
+#   - Operator neutrals: #1A407F deep-blue, #E0E0E0 silver,
+#     #B7C9D7 pale blue-grey, #948E8E warm grey, #734F39 brown
+#   - Hokusai "The Great Wave off Kanagawa": #3E7765 wave-green,
+#     #E7DFD3 foam-cream, #F35C15 sunset-orange, #DC271B coral-red,
+#     #282262 deep-indigo
+# Combined into one coherent palette where every tone has a role.
+# /etc/profile.d/mios-colors.sh emits OSC-4 / OSC-10 / OSC-11 / OSC-12
+# escape sequences at every interactive shell start so the operator's
+# terminal repaints to MiOS palette regardless of which emulator
+# launched it. Ptyxis / GNOME Terminal also read this same TOML via
+# the configurator HTML when the operator picks a custom override.
+# ----------------------------------------------------------------------------
+[colors]
+# ── Named tokens (the configurator HTML, OSC-aware apps, theming) ─────────
+bg          = "#282262"   # deep indigo  (Hokusai sky)            [main bg]
+fg          = "#E7DFD3"   # cream         (Hokusai foam)           [main fg]
+accent      = "#1A407F"   # operator blue (interactive / link)
+cursor      = "#F35C15"   # sunset orange (visible cursor)
+success     = "#3E7765"   # wave green
+warning     = "#F35C15"   # sunset orange
+error       = "#DC271B"   # coral red
+info        = "#1A407F"   # operator blue
+muted       = "#948E8E"   # warm grey
+subtle      = "#B7C9D7"   # pale blue-grey
+earth       = "#734F39"   # brown
+silver      = "#E0E0E0"   # operator silver
+
+# ── ANSI 16-color slot mapping (terminal palette via OSC-4) ───────────────
+# Slot 0..7 are the canonical low colors; 8..15 are the bright variants.
+# Programs that emit `\e[31m` etc. resolve through these slots.
+ansi_0_black            = "#282262"   # deep indigo
+ansi_1_red              = "#DC271B"   # coral red
+ansi_2_green            = "#3E7765"   # wave green
+ansi_3_yellow           = "#F35C15"   # sunset orange
+ansi_4_blue             = "#1A407F"   # operator blue
+ansi_5_magenta          = "#734F39"   # brown
+ansi_6_cyan             = "#B7C9D7"   # pale blue-grey
+ansi_7_white            = "#E7DFD3"   # cream
+ansi_8_bright_black     = "#948E8E"   # warm grey
+ansi_9_bright_red       = "#FF6B5C"   # lighter coral
+ansi_10_bright_green    = "#5FAA8E"   # lighter wave-green
+ansi_11_bright_yellow   = "#FF8540"   # lighter sunset
+ansi_12_bright_blue     = "#3D6BA8"   # lighter operator blue
+ansi_13_bright_magenta  = "#9D7660"   # lighter brown
+ansi_14_bright_cyan     = "#E0E0E0"   # operator silver
+ansi_15_bright_white    = "#FFFFFF"   # pure white
+
 # ----------------------------------------------------------------------------
 # [bootstrap] -- behavior of mios-bootstrap.git/install.sh during Phase-0.
 #   mode: auto | bootc | fhs