[deferred] x402 adapters: Daydreams, Fluora, Faremeter, Pinata

[jithinraj]

Scope

• x402+Daydreams: PEIP-AI/inference@1 mapping, 10+ tests
• x402+Fluora: PEIP-SVC/mcp-call@1 mapping, 10+ tests
• x402+Faremeter: Faremeter Node middleware, 10+ tests
• x402+Pinata: PEIP-OBJ/private@1 (store=ipfs), 10+ tests

Deferred from

v0.9.19

Target

v0.9.20

Rationale

Focus on Razorpay first.

See: docs/roadmap/DEFERRED.md