feat(llm-observability): Sleek(ish) dashboard

[Twixes]

Problem

This wasn't very useful or pleasant to look at:

Changes

This should be significantly better:

Adding this dashboard-like UI involved refactoring InsightCard, so that we can separate out QueryCard. QueryCard is basically InsightCard that doesn't rely on a saved insight – it can be an ephemeral query, or hard-coded like in the LLM observability scene. Query cards are elegant and can be instantly opened as new insights for going deeper.

[posthog-bot]

📸 UI snapshots have been updated

8 snapshot changes in total. 0 added, 8 modified, 0 deleted:

• chromium: 0 added, 4 modified, 0 deleted (diff for shard 2)
• webkit: 0 added, 4 modified, 0 deleted (diff for shard 2)

Triggered by this commit.

👉 Review this PR's diff of snapshots.

[github-actions]

Size Change: +292 B (+0.03%)

Total Size: 1.12 MB

ℹ️ View Unchanged

Filename	Size	Change
frontend/dist/toolbar.js	1.12 MB	+292 B (+0.03%)

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