inference-mcp 1.2.1: verify the meter with the exact messages sent

Pass the messages array to verifyMeter so meterVerified works on the OpenAI
chat path (the shim meters flattened messages). Requires x402-bsv-client >=0.4.2.

v1.2.0: verify the v2 meter + charge (receiptVerified + meterVerified)

infer now recomputes the charge (published formula) and the token count (from the
exact system/prompt/completion under bsvkey-meter/1) offline, and returns
meterVerified alongside receiptVerified. Optional dep @bsvkey/x402-bsv-client
bumped to ^0.4.0 (the v2 verifier).

v1.1.2: infer auto-verifies the signed usage receipt

The infer tool now verifies the broker's usageReceipt offline and returns
receiptVerified (true / false+receiptCheck / null-if-skipped): recover the broker
key (pinned from GET /v1/receipt-key), check channel binding, monotonic seq (no
replay/gap), and running totals within funded. Local only, no payment, no on-chain,
no effect on x402_infer. Best-effort via the optional @bsvkey/x402-bsv-client
verifier (bumped to ^0.3.0); absent -> null, never an error. Spec at
https://inference.bsvkey.com/usage-receipts.md

Bump version to 1.1.1 in server.json

v1.1.0: add x402_infer pay-per-call tool

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>