feat(anthropic): Support span streaming

[alexander-alderman-webb]

Note: Depends on #6312

Description

Remove undocumented unknown_response attribute.

Use sentry_sdk.traces.start_span and replace Span.set_data() with StreamedSpan.set_attribute() when in span streaming mode.

Parametrize tests on the trace lifecycle option.

Issues

Closes#5997

Reminders

• Please add tests to validate your changes, and lint your code using tox -e linters.
• Add GH Issue ID & Linear ID (if applicable)
• PR title should use conventional commit style (feat:, fix:, ref:, meta:)
• For external contributors: CONTRIBUTING.md, Sentry SDK development docs, Discord community

[github-actions]

Codecov Results 📊

✅ 5 passed | Total: 5 | Pass Rate: 100% | Execution Time: 898ms

📊 Comparison with Base Branch

Metric	Change
Total Tests	📉 -2
Passed Tests	📉 -2
Failed Tests	—
Skipped Tests	—

All tests are passing successfully.

❌ Patch coverage is 7.69%. Project has 17382 uncovered lines.
❌ Project coverage is 22.93%. Comparing base (base) to head (head).

Files with missing lines (2)

File	Patch %	Lines
tracing_utils.py	30.39%	⚠️ 529 Missing and 39 partials
anthropic.py	5.83%	⚠️ 436 Missing

Coverage diff

@@ Coverage Diff @@## main #PR +/-##
==========================================
- Coverage 23.15% 22.93% -0.22%
==========================================
Files 190 190 —
Lines 22531 22554 +23
Branches 7676 7692 +16
==========================================
+ Hits 5215 5172 -43- Misses 17316 17382 +66- Partials 479 476 -3

---

Generated by Codecov Action

[sentrivana]

👍🏻 Small improvement suggestions in comments

[sentrivana]

One more thing: I didn't double check if all the attributes exist in conventions, but I assume you've done that already.

[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

^{❌ Bugbot Autofix is OFF. To automatically fix reported issues with cloud agents, enable autofix in the Cursor dashboard.}

^{Reviewed by Cursor Bugbot for commit 53bf159. Configure here.}