dsh-billing-statistics: Usage of DSH Local Billing Ledger

DSH Local Billing Ledger maintained by SuLiuCanYing (MIT, v1.13.0). Records only calls passing through DSH llm/stream, aggregating call counts, failures and interruptions, input/output cached tokens, and estimated costs by platform, model, and hour. Billing follows peak/valley and tiered pricing, with amounts recorded to 6 decimal places. Pricing priority is Custom Pricing > Manual Import > DeepSeek Official Auto Peak/Valley Pricing > models.dev Directory > Built-in Reference Pricing; sources are marked on the page. Includes manual alignment with official invoices and HTML/PDF/CSV export. Data is stored locally only and does not block budgets. Compatible with DSH >=0.2.1-rc.5 <0.3.0 and Node.js >=20.