feat(payment): add new DeepSeek V4 models to claw402 endpoints and pricing (#1488)

- Introduced "deepseek-v4-flash" and "deepseek-v4-pro" endpoints in claw402ModelEndpoints.
- Updated modelPrices to include pricing for the new DeepSeek V4 models.
- Added model constants for the new DeepSeek V4 models in the trader component.

Co-authored-by: Dean <afei.wuhao@gmail.com>

mcp/payment/claw402.go

@@ -65,6 +65,8 @@ var claw402ModelEndpoints = map[string]string{
 	// DeepSeek
 	"deepseek":          "/api/v1/ai/deepseek/chat",
 	"deepseek-reasoner": "/api/v1/ai/deepseek/chat/reasoner",
+	"deepseek-v4-flash": "/api/v1/ai/deepseek/v4-flash",
+	"deepseek-v4-pro":   "/api/v1/ai/deepseek/v4-pro",
 	// Qwen
 	"qwen-max":   "/api/v1/ai/qwen/chat/max",
 	"qwen-plus":  "/api/v1/ai/qwen/chat/plus",

store/ai_charge.go

@@ -22,6 +22,8 @@ func (AICharge) TableName() string { return "ai_charges" }
 var modelPrices = map[string]float64{
 	"deepseek":          0.003,
 	"deepseek-reasoner": 0.005,
+	"deepseek-v4-flash": 0.003,
+	"deepseek-v4-pro":   0.01,
 	"gpt-5.4":           0.05,
 	"gpt-5.4-pro":       0.50,
 	"gpt-5.3":           0.01,

web/src/components/trader/model-constants.ts

@@ -43,6 +43,8 @@ export function getShortName(fullName: string): string {
 
 // Models available through Claw402 (x402 USDC payment protocol)
 export const CLAW402_MODELS: Claw402Model[] = [
+  { id: 'deepseek-v4-flash', name: 'DeepSeek V4 Flash', provider: 'DeepSeek', desc: '$0.003/call', icon: '⚡', price: 0.003 },
+  { id: 'deepseek-v4-pro', name: 'DeepSeek V4 Pro', provider: 'DeepSeek', desc: '$0.01/call', icon: '🧠', price: 0.01 },
   { id: 'deepseek', name: 'DeepSeek V3', provider: 'DeepSeek', desc: '$0.003/call', icon: '🔥', price: 0.003 },
   { id: 'deepseek-reasoner', name: 'DeepSeek R1', provider: 'DeepSeek', desc: '$0.005/call', icon: '🤔', price: 0.005 },
   { id: 'gpt-5-mini', name: 'GPT-5 Mini', provider: 'OpenAI', desc: '$0.005/call', icon: '🚀', price: 0.005 },