[billyvg]

Why?

While an investigation runs, the status block at the top showed its tool calls as a bare toggle that read as just a list of calls. It should look and behave like the thinking block the Seer agent (Explorer) shows, including the agent's reasoning between the calls. Seer is starting to send that reasoning as a thoughts list beside each phase's tool activity.

How?

A running status block now renders the shared ThinkingBlock: the latest tool call is its live title, every call for the current phase is listed inside in run order, and the run's active time ticks on the right.

Each phase's thoughts are put back between its calls, before the call each one names, and render as reasoning prose with the same styling as the Seer agent's thinking block. The block's title stays the latest call and never a thought, as in the agent's. When running calls are moved last across parallel hypotheses, a thought moves with the call it led to, so the two are never parted.

Screenshots

These predate the reasoning, so they show calls only.

With tool calls (latest call is the title, calls listed in run order, failures flagged):

Before any tool call has landed, the block reads "Thinking", like the agent's:

Narrow container: the status title wraps, the thinking title truncates, the clock holds the right edge:

The shared ThinkingBlock story, for comparison:

Decisions

• Folds in the thinking block change this was stacked on, so the two land together:
  • feat(investigations): Draw the status block's tool calls as a thinking block #127635
• Sentry validates the new fields in:
  • feat(investigations): Accept the agent's reasoning beside tool activity #128435
• Until Seer sends thoughts, the block shows only the calls, so this can merge in any order relative to the backend and Seer changes.

_{Generated with Claude Code}

[github-actions]

Story previews

Preview the stories changed in this PR on the Vercel deployment:

• app/components/core/chat/thinkingBlock.mdx
• app/views/investigations/actionRequests/nextStepCard.stories.tsx
• app/views/investigations/detail/runTimer.stories.mdx
• app/views/investigations/hypotheses/hypotheses.stories.tsx
• app/views/investigations/statusBlock/seerStatusBlock.stories.tsx

_{Preview deployment: https://sentry-1u8e3e3vb.sentry.dev}

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