feat(autoresearch): Improve autoresearch display components

[MattPua]

Problem

Autoresearch runs did not clearly expose live progress, current findings, or pause-aware timing.

Changes

• Add a responsive, collapsible live timeline with newest-first activity, timestamps, statuses, command tooltips, and loading states
• Add current findings, sorted observed-time categories, and expandable iteration summaries
• Track pause intervals so runtime and observed time exclude paused or interrupted periods
• Improve accessibility, truncation, container queries, and Quill component usage

How did you test this?

• Core autoresearch tests: 161 passed
• UI autoresearch tests: 45 passed
• pnpm --filter @posthog/core typecheck
• pnpm --filter @posthog/ui typecheck
• pnpm exec biome check packages/core/src/autoresearch packages/ui/src/features/autoresearch
• git diff --check

Automatic notifications

• Publish to changelog?
• Alert Sales and Marketing teams?

---

Created with PostHog Code

[trunk-io]

😎 Merged successfully - details.

[github-actions]

React Doctor found 4 issues in 1 file · 4 warnings.

4 warnings

src/features/autoresearch/AutoresearchObservability.tsx

• ⚠️ src/features/autoresearch/AutoresearchObservability.tsx:284 Control missing accessible label control-has-associated-label
• ⚠️ src/features/autoresearch/AutoresearchObservability.tsx:309 Control missing accessible label control-has-associated-label
• ⚠️ src/features/autoresearch/AutoresearchObservability.tsx:435 Control missing accessible label control-has-associated-label
• ⚠️ src/features/autoresearch/AutoresearchObservability.tsx:454 Control missing accessible label control-has-associated-label

_{Reviewed by React Doctor for commit 50a5f40.}

[greptile-apps]

_{Reviews (1): Last reviewed commit: "Merge branch 'main' into posthog-code/au..." | Re-trigger Greptile}

[posthog]

✅ Visual changes approved by @MattPua — baseline updated in 50a5f40.

View this run in PostHog

6 new, 28 removed.

[greptile-apps]

_{Reviews (2): Last reviewed commit: "test(autoresearch): consolidate dashboar..." | Re-trigger Greptile}

[stamphog]

This PR exceeds the automated size ceiling (2450 lines, 25 files) and spans two areas, so it needs a human reviewer. The two bot comments about pause-clock and restart-interruption timing bugs in core autoresearch logic are marked resolved but were raised on an older commit — a reviewer should confirm the current diff actually addresses those runtime-duration correctness issues before merging.

[fercgomes]

beautiful