Add SDK version to standalone activity details

[laurakwhit]

Description & motivation 💭

Adds SDK version to standalone activity details page.

Note: Need latest API release that includes temporalio/api#782 to actually see fields.

Screenshots (if applicable) 📸

Design Considerations 🎨

Testing 🧪

How was this tested 👻

• Manual testing
• E2E tests added
• Unit tests added

Steps for others to test: 🚶🏽‍♂️🚶🏽‍♀️

Checklists

Draft Checklist

Merge Checklist

Issue(s) closed

DT-3984

Docs

Any docs updates needed?

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Project	Deployment	Actions	Updated (UTC)
holocene	Ready	Preview, Comment	May 22, 2026 9:35pm

[temporal-cicd]

Warnings

⚠️

📊 Strict Mode: 13 errors in 2 files (1.4% of 933 total) src/lib/components/standalone-activities/activity-header.svelte (4) L32:32: 'activityExecutionInfo.activityType' is possibly 'null' or 'undefined'. L60:10: Type 'string | null | undefined' is not assignable to type 'string'. L103:36: Type 'string | null | undefined' is not assignable to type 'string'. L121:8: Type 'string | null | undefined' is not assignable to type 'string'. src/lib/pages/standalone-activity-details.svelte (9) L38:6: '$activityExecution.info.attempt' is possibly 'null' or 'undefined'. L81:9: '$activityExecution.info.activityType' is possibly 'null' or 'undefined'. L104:16: Argument of type 'number | null | undefined' is not assignable to parameter of type 'number'. L117:16: '$activityExecution.info.attempt' is possibly 'null' or 'undefined'. L158:19: '$activityExecution.info.attempt' is possibly 'null' or 'undefined'. L160:18: Argument of type 'number | null | undefined' is not assignable to parameter of type 'number'. L285:16: Type 'string | null | undefined' is not assignable to type 'string'. L287:14: Type 'string | null | undefined' is not assignable to type 'string'. L296:14: Type 'string | null | undefined' is not assignable to type 'string'.

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