Extend session TTL to 30 days with sliding expiration

Bump turso to 0.6.0-pre.5, increase body limit to 100MB, fix clang 18 build

Fix chart x-axis dates and bump turso to 0.5.1

Replace Swagger UI with --openapi CLI flag for spec generation

Refactor architecture: split admin.rs, fix error handling, improve code organization

Clean up llm-relay integration: remove re-export wrappers, use types directly

Update README with usage history feature

Bump version to 1.0.0

Update turso to v0.5.0-pre.14

Add token breakdown to usage history endpoints and UI

Strip context_management field unsupported by OAuth API

Replace donut charts with category bars, fill empty timeseries buckets

Replace counter-based usage with request_log, add usage history charts

Bump version to 0.2.0

Bump llm-relay to 0.2.0