[boboliu-1010]

Use official x402 Core, EVM and fetch packages with TRON 2.1.0-beta.3 and its independent resource sponsoring extension. Wallets with sufficient Permit2 allowance omit unused Approval declarations. Mixed hexadecimal/decimal TRON offers remain selectable under spend controls, and the SDK dependency graph is bundled for npm consumers.

Validation:

• Full suite after syncing the latest develop: 4,825 passed, 2 existing skips.
• Typecheck, lint, formatting, dependency boundaries and build passed after syncing the latest develop.
• Independently installed npm package verification: 88 passed.
• Production dependency audit: zero high or critical vulnerabilities; 11 low and 6 moderate reports remain.
• Earlier integration acceptance covered 14 CLI → upgraded Gateway → Facilitator HTTP/database/signature checks with isolated chain I/O.
• Live Nile acceptance on the current CLI commit covered ordinary Permit2, GasFree, existing allowance and first Approval resource sponsoring through both upgraded local services. Each settled and delivered real DefiLlama data; payment receipts, local settlement records and sponsored Energy reclaim were confirmed. GasFree retains the official authenticated relayer proxy; verification and settlement run locally.