Parity: spec 046 metering surface (modelPrices, creditBalance, grantCredits)

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hadron-server PR hadron-memory/hadron-server#616 (spec 046, AI-credit billing Phase 0) added a GraphQL surface the CLI should cover per the feature-complete policy (#134):

Queries

• modelPrice(ref) / modelPrices(provider, model, limit, offset) — authenticated read
• creditLedgerEntries(orgRef, limit, offset) — org-ADMIN
• creditBalance(orgRef) — org-ADMIN

Mutations

• setModelPrice(input) — platform admin; appends an effective-dated rate row (micro-cents per MTok, base-10 integer strings)
• grantCredits(input) — platform admin only

Suggested shape: hadron billing prices [ls|set], hadron billing ledger <org>, hadron billing balance <org>, hadron billing grant <org> <amount>. All bigint money fields travel as base-10 integer strings of micro-cents (1e-8 USD).

🤖 Generated with Claude Code

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Naming update (2026-07-11, PR hadron-memory/hadron-server#616 revision): the entity is now AiModelPrice — GraphQL surface renamed to aiModelPrice(ref) / aiModelPrices(provider, model, tier, limit, offset) / setAiModelPrice(input). The rate row gained tier: Int (1–3, default 1) and markupBasisPoints: Int (per-tier debit markup; 2500 = 25%). grantCredits / creditLedgerEntries / creditBalance are unchanged.