0.4.26

What's Changed

• fix(docs): pin sphinxawesome-theme to <6.0.0 by @Spherrrical in #968
• fix(ci): switch retired claude-sonnet-4-20250514 to claude-sonnet-4-6 by @Spherrrical in #975
• feat: configurable model pricing source by @Spherrrical in #971
• Remove deprecated legacy signal OTel attributes by @Spherrrical in #976
• feat(tracing): provider-agnostic exporters with first-class PostHog support by @Spherrrical in #972
• test: add keyless model listener filter demo by @mukeshbaphna in #957
• release 0.4.26 by @Spherrrical in #977

Full Changelog: 0.4.25...0.4.26