[OPIK-7421] test: add Ollie explain E2E release-gate test

[natagh23]

Details

Adds an E2E release-gate test for the "Explain" (Ollie) feature on the Traces table: for each seeded trace it opens the Errors, Estimated cost, and Duration cell explanations and asserts the returned text is on-topic, then verifies "Continue conversation" hands the same explanation off to the Ollie sidebar. Also seeds a dedicated fixture of traces with varied cost/duration/error data to exercise each explanation path, and extends the SDK driver service with the trace fields needed to seed them.

Change checklist

• User facing
• Documentation update

Issues

• Resolves OPIK-7421

AI-WATERMARK

AI-WATERMARK: yes

• Tools: Claude Code
• Model(s): Claude Sonnet 5
• Scope: full implementation
• Human verification: code review + manual testing

Testing

Ran npx tsc --noEmit in tests_end_to_end/e2e (clean) and python3 -m py_compile on the modified opik-sdk-driver route/schema files (clean). New spec added under @t3-nightly/@ollie tags; not run against a live cloud environment in this session since Ollie is cloud/client-only.

Documentation

N/A

[github-actions]

⏱️ pre-commit per-hook timing

Hook	Description	Result	Duration
🐳 hadolint — dockerfiles	Lint Dockerfiles	✅	3.11s
🛡️ fix end of files — guardrails	Ensure files end in a newline	✅	0.03s
🛡️ trim trailing whitespace — guardrails	Strip trailing whitespace	✅	0.03s
Total (3 ran)			3.17s

⏭️ 38 skipped (no matching files changed)

Hook	Description	Result
🐍 trim trailing whitespace — python sdk	Strip trailing whitespace	⏭️
🐍 fix end of files — python sdk	Ensure files end in a newline	⏭️
🐍 ruff — python sdk	Lint + autofix Python (ruff)	⏭️
🐍 ruff-format — python sdk	Format Python code (ruff)	⏭️
🐍 mypy — python sdk	Static type check	⏭️
🤖 trim trailing whitespace — optimizer	Strip trailing whitespace	⏭️
🤖 fix end of files — optimizer	Ensure files end in a newline	⏭️
🤖 check yaml — optimizer	Validate YAML syntax	⏭️
🤖 check json — optimizer	Validate JSON syntax	⏭️
🤖 check toml — optimizer	Validate TOML syntax	⏭️
🤖 check for added large files — optimizer	Block large files (>1MB)	⏭️
🔐 detect private key — optimizer	Block committed private keys	⏭️
🤖 check for merge conflicts — optimizer	Block merge-conflict markers	⏭️
🤖 check for case conflicts — optimizer	Block case-only name clashes	⏭️
🤖 pyupgrade — optimizer	Modernize Python syntax	⏭️
🤖 ruff — optimizer	Lint + autofix Python (ruff)	⏭️
🤖 ruff-format — optimizer	Format Python code (ruff)	⏭️
🤖 mypy — optimizer	Static type check	⏭️
📓 nbstripout — optimizer notebooks	Strip notebook output	⏭️
📝 markdownlint — optimizer	Lint Markdown	⏭️
🔤 codespell — optimizer	Fix common misspellings	⏭️
📊 radon cc — optimizer	Cyclomatic-complexity gate	⏭️
📊 radon raw — optimizer	Raw size metrics gate	⏭️
📊 xenon — optimizer	Fail on complexity thresholds	⏭️
📊 lizard — optimizer	Cyclomatic-complexity gate	⏭️
🧹 vulture — optimizer	Find dead code	⏭️
🛡️ ruff — guardrails	Lint + autofix Python (ruff)	⏭️
🛡️ ruff-format — guardrails	Format Python code (ruff)	⏭️
🛡️ mypy — guardrails	Static type check	⏭️
⚓ helm-docs	Regenerate Helm chart README	⏭️
block non-public FE plugins	Block non-public FE plugins	⏭️
☕ spotless — java backend	Format Java code	⏭️
🧪 pre-commit wrapper smoke tests	Self-test the wrapper scripts	⏭️
🌐 eslint — frontend	Lint + autofix JS/TS	⏭️
🌐 typecheck — frontend	Whole-project tsc type check	⏭️
📘 eslint — typescript sdk	Lint + autofix JS/TS	⏭️
📘 typecheck — typescript sdk	Whole-project tsc type check	⏭️
⚙️ actionlint — github workflows	Lint GitHub Actions workflows	⏭️