feat: Trust Ledger, MCP Server, x402 Payments UI, and CI Fixes

backend/package.json

@@ -10,9 +10,11 @@
     "lint": "eslint src/",
     "format": "prettier --write src/",
     "test": "vitest run",
-    "test:watch": "vitest"
+    "test:watch": "vitest",
+    "mcp": "npx tsx src/mcp/server.ts"
   },
   "dependencies": {
+    "@modelcontextprotocol/sdk": "^1.12.1",
     "@casper-ecosystem/casper-eip-712": "1.2.1",
     "@make-software/casper-x402": "1.0.0",
     "@noble/hashes": "1.4.0",
@@ -23,7 +25,8 @@
     "cors": "2.8.5",
     "dotenv": "16.4.5",
     "express": "4.19.2",
-    "express-rate-limit": "7.3.1"
+    "express-rate-limit": "7.3.1",
+    "zod": "^3.24.4"
   },
   "devDependencies": {
     "@types/cors": "2.8.17",

backend/src/agentStore.ts

@@ -9,7 +9,10 @@ export interface AgentRecord {
   active:           boolean;
   reputationScore:  number;
   tasksCompleted:   number;
+  tasksFailed:      number;
+  lastUpdated:      string;   // ISO timestamp of last reputation change
   source:           "on-chain" | "local";
+  demo?:            boolean;  // true for seeded coordinator agents
 }
 
 const STORE_PATH = path.resolve(__dirname, "..", "data", "agents.json");
@@ -34,7 +37,12 @@ function loadLocal(): void {
           removed++;
           continue;
         }
-        agents.set(k, { ...rec, source: rec.source ?? "local" });
+        agents.set(k, {
+          ...rec,
+          source:     rec.source ?? "local",
+          tasksFailed: rec.tasksFailed ?? 0,
+          lastUpdated: rec.lastUpdated ?? new Date(0).toISOString(),
+        });
       }
       if (removed > 0) {
         console.warn(`[AgentStore] Removed ${removed} agents with invalid account hashes`);
@@ -106,6 +114,8 @@ export function addAgent(
     active: true,
     reputationScore: 5000,
     tasksCompleted: 0,
+    tasksFailed: 0,
+    lastUpdated: new Date().toISOString(),
     source: "local",
   });
   saveLocal();
@@ -173,9 +183,22 @@ export async function seedCoordinatorAgents(): Promise<void> {
     const priceMotes = "500000000";
     const caps = ["research", "risk", "coding", "design", "audit", "report"];
     for (const cap of caps) {
-      addAgent(acctHash, `coordinator://${cap}`, cap, priceMotes);
+      agents.set(acctHash, {
+        accountHash:      acctHash,
+        endpoint:         `coordinator://${cap}`,
+        capability:       cap,
+        pricePerTask:     priceMotes,
+        active:           true,
+        reputationScore:  5000,
+        tasksCompleted:   0,
+        tasksFailed:      0,
+        lastUpdated:      new Date().toISOString(),
+        source:           "local",
+        demo:             true,
+      });
     }
-    console.log(`[AgentStore] Seeded ${caps.length} coordinator agents with hash ${acctHash.slice(0, 14)}…`);
+    saveLocal();
+    console.log(`[AgentStore] Seeded ${caps.length} coordinator agents (demo=true) with hash ${acctHash.slice(0, 14)}…`);
   } catch (err) {
     console.warn(`[AgentStore] Could not seed coordinator agents: ${err}`);
   }

backend/src/casperHandler.ts

@@ -1,7 +1,16 @@
 import axios, { AxiosInstance } from "axios";
 
-const SDK = require("casper-js-sdk");
-const { TypedJSON } = require("typedjson");
+let sdkMod: typeof import("casper-js-sdk") | null = null;
+let typedJsonMod: typeof import("typedjson") | null = null;
+
+async function loadSdk() {
+  if (!sdkMod) sdkMod = await import("casper-js-sdk");
+  return sdkMod;
+}
+async function loadTypedJson() {
+  if (!typedJsonMod) typedJsonMod = await import("typedjson");
+  return typedJsonMod;
+}
 
 /**
  * Standalone RPC handler using standard axios (not fetch adapter).
@@ -20,7 +29,8 @@ export class AxiosHandler {
   }
 
   async processCall(payload: object): Promise<any> {
-    const ser = new TypedJSON(SDK.RpcRequest);
+    const [SDK, { TypedJSON }] = await Promise.all([loadSdk(), loadTypedJson()]);
+    const ser = new TypedJSON(SDK.RpcRequest as any);
     let jsonStr: string;
     try {
       jsonStr = ser.stringify(payload);