feat: cream terminal redesign, English-only UI, autopilot launch fixes

- Redesign dashboard into a cream-paper + vermilion IBM Plex Mono terminal
  (live L2 order book, cost/liq map, WS K-line, signal matrix, orchestration
  topology, risk radar, execution log, current positions, equity curve)
- Convert all user-facing UI and backend strings/prompts from Chinese to
  English (multi-language retained, default English)
- Add /api/statistics/full endpoint + full-stats frontend wiring
- Fix Autopilot launch: reuse the existing trader instead of creating
  duplicates (eliminates repeat ~35s create cost and stale-trader 404s);
  launch sends 5m scan interval
- Fix unreadable toasts: cream theme with high-contrast text + per-type accent
- Silence background dashboard polls (getTraderConfig) to stop error-toast spam

store/strategy_schema_test.go

@@ -80,14 +80,14 @@ func TestStrategyConfigUnmarshalLegacyFlatAIConfig(t *testing.T) {
 func TestStrategyConfigNormalizeProductSchemaForLLMLabels(t *testing.T) {
 	cfg := GetDefaultStrategyConfig("zh")
 	patch := map[string]any{
-		"strategy_type": "AI 策略",
+		"strategy_type": "AI strategy",
 		"ai_config": map[string]any{
 			"coin_source": map[string]any{
 				"source_type": "AI500",
 			},
 			"indicators": map[string]any{
 				"klines": map[string]any{
-					"primary_timeframe":   "1分钟",
+					"primary_timeframe":   "1 minute",
 					"selected_timeframes": []any{`["1m"`, `"5m"`, `"15m"]`},
 				},
 			},
@@ -126,7 +126,7 @@ func TestStrategyConfigNormalizeProductSchemaForLLMLabels(t *testing.T) {
 func TestStrategyConfigNormalizeProductSchemaForVergexSignal(t *testing.T) {
 	cfg := GetDefaultStrategyConfig("zh")
 	cfg.CoinSource = CoinSourceConfig{
-		SourceType: "Claw402 Vergex 信号榜",
+		SourceType: "Claw402 Vergex signal board",
 	}
 
 	cfg.NormalizeProductSchema()