Implement P1 local matcher/ledger and P2 strategy engine.

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/src/api/client.ts

@@ -1,7 +1,6 @@
 const TOKEN_KEY = "eth_hedge_token";
 const USER_KEY = "eth_hedge_user";
 
-/** 始终同源（经 dc.hyf2.cc 反代），不再暴露可改 API 地址。 */
 export function getApiBase(): string {
   return window.location.origin;
 }
@@ -113,3 +112,39 @@ type Quote = {
   ask_sz: number | null;
   mark_px: number | null;
 };
+
+export type PlanState = {
+  running: boolean;
+  phase: string;
+  rounds_done: number;
+  max_rounds: number;
+  window_key: string | null;
+  rest_left_sec: number;
+  rest_seconds: number;
+  exit_move_points: number;
+  can_open: boolean;
+  last_error: string | null;
+  position: {
+    has_position: boolean;
+    group_id?: string;
+    perp_side?: string;
+    option_side?: string;
+    perp_upl?: number;
+    option_upl?: number;
+    index_px?: number | null;
+    entry_index_px?: number;
+    move_points?: number;
+    initial_premium?: number;
+    premium_gap?: number;
+  };
+  ledger: { equity: number; available: number; reserved: number };
+};
+
+export type StrategySettings = {
+  fee_rate: number;
+  exit_move_points: number;
+  rest_seconds: number;
+  max_rounds: number;
+  initial_equity: number;
+  ledger: { equity: number; available: number };
+};