2.2.8

## What's Changed
* [NA] [FE] fix: strip deprecated sampling params for Claude Opus 5 by @AndreiCautisanu in https://github.com/comet-ml/opik/pull/7624
* [OPIK-7192] [BE][FE] refactor: gate Agent Insights behind the Ollie toggle by @aadereiko in https://github.com/comet-ml/opik/pull/7397
* [OPIK-7462] [FE] fix: build Recent Activity links via router params to survive basepath strip by @AndreiCautisanu in https://github.com/comet-ml/opik/pull/7585
* [OPIK-7491] [BE] perf: trim E2E backend image compile (maven.test.skip, drop ineffective -T 1C) by @JetoPistola in https://github.com/comet-ml/opik/pull/7615
* [OPIK-7264] [BE] fix: serialize concurrent dataset version writes to prevent 500s and silent row loss by @JetoPistola in https://github.com/comet-ml/opik/pull/7518
* [NA] [BE] fix: register moonshot as a canonical provider so Moonshot model prices load by @Anuj7411 in https://github.com/comet-ml/opik/pull/7604
* [NA] [SDK] fix: Optimization Studio — stop GEPA runs on perfect full-eval score, separate mini-batch evals from full evaluations by @awkoy in https://github.com/comet-ml/opik/pull/7591
* [OPIK-6901] [BE] test: buffered traces cutover deletion-bridge E2E gate + runbook by @andrescrz in https://github.com/comet-ml/opik/pull/7572
* [NA] [BE] feat(cipx): ingest Anthropic org seat/billing identity fields for AI-Spend by @aadereiko in https://github.com/comet-ml/opik/pull/7605
* fix: recover ADK LLM spans when ContextCacheConfig detaches the async context (#5524) by @lupuletic in https://github.com/comet-ml/opik/pull/7305
* [OPIK-7487] [BE] fix: land multi-batch dataset file upload in a single version by @JetoPistola in https://github.com/comet-ml/opik/pull/7613
* [OPIK-7494] [GHA] chore: add Dependabot coverage for CI/test-tooling deps by @JetoPistola in https://github.com/comet-ml/opik/pull/7622
* build(deps): bump peter-evans/find-comment from 3 to 4 by @dependabot[bot] in https://github.com/comet-ml/opik/pull/7635
* build(deps): bump actions/labeler from 6 to 7 by @dependabot[bot] in https://github.com/comet-ml/opik/pull/7639
* build(deps): bump peter-evans/create-pull-request from 6 to 8 by @dependabot[bot] in https://github.com/comet-ml/opik/pull/7637
* build(deps): bump docker/setup-buildx-action from 3 to 4 by @dependabot[bot] in https://github.com/comet-ml/opik/pull/7634
* build(deps): bump google-github-actions/auth from 2 to 3 by @dependabot[bot] in https://github.com/comet-ml/opik/pull/7640
* [NA] [BE][FE] chore: sync provider model definitions by @CometActions in https://github.com/comet-ml/opik/pull/7642
* [NA] [SDK] [DOCS] Update automatically OpenAPI spec and Fern code by @CometActions in https://github.com/comet-ml/opik/pull/7641


**Full Changelog**: https://github.com/comet-ml/opik/compare/2.2.7...2.2.8