dsh-billing v0.2.0

What's new in 0.2.0

• effectiveFrom: Each model price entry can now set effectiveFrom (Unix epoch ms) to gate the price table — calls before that timestamp are priced at zero, allowing advance deployment of new price tables.
• zeroPricedCalls tracking: The billing projection tracks how many calls were priced at zero (before effectiveFrom or for unpriced models). The Web UI shows a warning when zero-priced calls are present.
• Startup warning: A warning is logged at startup if a model price entry has no effectiveFrom set.
• Registry switch: Changed from private npm registry to npmmirror.com for improved accessibility.
• Dependency cleanup: Moved @deepseek-ai/schemastery from peerDependencies to devDependencies; removed all peerDependencies in favor of devDependencies.