## Summary

Make blocked workflow and workflow-action pills use the danger/red tone
so they stand out from yellow external-action warnings in workflow
lookup lists.

## Background

Blocked entries were visually too similar to external actions in dense
workflow/action lists, making them hard to spot at a glance.

## Implementation

- Added a `danger` tone to the shared `WorkflowBadge` helper.
- Switched blocked pills in workflow lists, workflow cards, and workflow
action lists from `warning` to `danger`.
- Updated targeted UI tests to assert blocked pills are red
(`text-danger`) and no longer warning-colored.

## Validation

- `bun test
src/browser/features/Tools/WorkflowActionListToolCall.test.tsx
src/browser/features/Tools/WorkflowDefinitionToolCall.test.tsx`
- `make static-check`
- `/workflow simplify --max-findings 10` reported no actionable simplify
findings.
- Storybook dogfood via `agent-browser` verified the red blocked pill in
both `WorkflowActionList` and `WorkflowList` stories; screenshots/video
were captured locally.

## Risks

Low. This is a scoped presentation change to workflow lookup badges,
backed by tests for the specific blocked badge color distinction.

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