Standards alignment

import { AGENTIC_JWT_CLAIMS } from "kavachos/standards";

AGENTIC_JWT_CLAIMS.AGENT_ID;         // "agent_id"
AGENTIC_JWT_CLAIMS.AGENT_TYPE;       // "agent_type"
AGENTIC_JWT_CLAIMS.ON_BEHALF_OF;     // "on_behalf_of"
AGENTIC_JWT_CLAIMS.ACT;              // "act"
AGENTIC_JWT_CLAIMS.MAY_ACT;          // "may_act"
AGENTIC_JWT_CLAIMS.TRUST_TIER;       // "trust_tier"
AGENTIC_JWT_CLAIMS.AUDIT_REF;        // "audit_ref"
AGENTIC_JWT_CLAIMS.TOOL_CONSTRAINTS; // "tool_constraints"
AGENTIC_JWT_CLAIMS.WORKLOAD_BINDING; // "wit"
AGENTIC_JWT_CLAIMS.OPERATION;        // "operation"

import { createKavach } from "kavachos";

const kavach = createKavach({
  database: { url: process.env.DATABASE_URL },
  secret: process.env.KAVACHOS_SECRET,
  emitAgenticJwtClaims: true,
});

{
  "sub": "user_123",
  "iss": "https://your-app.example.com",
  "exp": 1700000000,
  "agent_id": "agent_42",
  "agent_type": "delegated",
  "trust_tier": "standard"
}