Event history legend

[laurakwhit]

Description & motivation 💭

Adds a new <EventHistoryLegend /> component to illustrate event status/classification colors and event type category icons and colors used in the timeline and on event details.

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

Docs

Any docs updates needed?

[vercel]

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Project	Deployment	Actions	Updated (UTC)
holocene	Ready	Preview, Comment	Feb 17, 2026 7:55pm

[temporal-cicd]

Warnings

⚠️

📊 Strict Mode: 9 errors in 4 files (0.8% of 1120 total) src/lib/holocene/tooltip.svelte (1) L52:13: Type 'null' is not assignable to type '"activity" | "add-square" | "add" | "apple" | "archives" | "arrow-down" | "arrow-left" | "arrow-up" | "arrow-right" | "ascending" | "astronaut" | "batch-operation" | "book" | ... 129 more ... | "xmark-square"'. src/lib/components/lines-and-dots/svg/text.svelte (3) L43:6: Type 'SVGTextElement | undefined' is not assignable to type 'SVGTextElement'. L49:45: 'config' is possibly 'undefined'. L63:4: Type '"activity" | "add-square" | "add" | "apple" | "archives" | "arrow-down" | "arrow-left" | "arrow-up" | "arrow-right" | "ascending" | "astronaut" | "batch-operation" | "book" | ... 130 more ... | undefined' is not assignable to type '"activity" | "add-square" | "add" | "apple" | "archives" | "arrow-down" | "arrow-left" | "arrow-up" | "arrow-right" | "ascending" | "astronaut" | "batch-operation" | "book" | ... 129 more ... | "xmark-square"'. src/lib/components/lines-and-dots/svg/workflow-row.svelte (2) L29:26: Type 'WorkflowStatus' is not assignable to type 'string | undefined'. L39:24: Type 'WorkflowStatus' is not assignable to type 'string | undefined'. src/lib/layouts/workflow-history-layout.svelte (3) L178:7: Type 'WorkflowExecution | null' is not assignable to type 'WorkflowExecution'. L189:2: Type 'string | undefined' is not assignable to type 'string'. L190:2: Type 'string | undefined' is not assignable to type 'string'.

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