UI: amber accents, smaller wallpaper logo, new support bundle name, drop display resolution

- Bootloader: GRUB fallback text colors → yellow/brown (amber tone)
- CLI charts: all GPU metric series use single amber color (xterm-256 #214)
- Wallpaper: logo width scaled to 400 px dynamically, shadow scales with font size
- Support bundle: renamed to YYYY-MM-DD (BEE-SP vX.X) SRV_MODEL SRV_SN ToD.tar.gz
  using dmidecode for server model (spaces→underscores) and serial number
- Remove display resolution feature (UI card, API routes, handlers, tests)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

audit/internal/platform/gpu_metrics.go

@@ -383,10 +383,7 @@ func drawGPUChartSVG(rows []GPUMetricRow, gpuIdx int) string {
 }
 
 const (
-	ansiRed    = "\033[31m"
-	ansiBlue   = "\033[34m"
-	ansiGreen  = "\033[32m"
-	ansiYellow = "\033[33m"
+	ansiAmber  = "\033[38;5;214m"
 	ansiReset  = "\033[0m"
 )
 
@@ -415,10 +412,10 @@ func RenderGPUTerminalChart(rows []GPUMetricRow) string {
 		fn      func(GPUMetricRow) float64
 	}
 	defs := []seriesDef{
-		{"Temperature (°C)", ansiRed, func(r GPUMetricRow) float64 { return r.TempC }},
-		{"GPU Usage (%)", ansiBlue, func(r GPUMetricRow) float64 { return r.UsagePct }},
-		{"Power (W)", ansiGreen, func(r GPUMetricRow) float64 { return r.PowerW }},
-		{"Clock (MHz)", ansiYellow, func(r GPUMetricRow) float64 { return r.ClockMHz }},
+		{"Temperature (°C)", ansiAmber, func(r GPUMetricRow) float64 { return r.TempC }},
+		{"GPU Usage (%)", ansiAmber, func(r GPUMetricRow) float64 { return r.UsagePct }},
+		{"Power (W)", ansiAmber, func(r GPUMetricRow) float64 { return r.PowerW }},
+		{"Clock (MHz)", ansiAmber, func(r GPUMetricRow) float64 { return r.ClockMHz }},
 	}
 
 	var b strings.Builder