Module license 

PhyTrace License Validation Module.

Provides JWT-based license validation with:

• RS256 signature verification using embedded PhyWare public key
• Expiry checking with 72-hour grace period
• Dev mode bypass for local testing
• Online validation heartbeat support

Structs

LicenseClaims

Parsed claims from a license JWT

LicenseMetadata

License metadata to be injected into events

LicenseValidator

Validates PhyTrace license tokens

Enums

LicenseError

License validation errors

LicenseStatus

Status of the license validation

Constants

DEFAULT_GRACE_PERIOD_HOURS

Default grace period (72 hours)

DEV_MODE_ENV

Environment variable for dev mode bypass

PHYWARE_PUBLIC_KEY

PhyWare public key for RS256 JWT verification (placeholder) In production, this would be the actual RSA public key