feat(mcp-analytics): crown the lab with the highest share by pauldambra · Pull Request #114881 · PostHog/posthog

pauldambra · 2026-10-10T11:02:41Z

Problem

People on the MCP analytics leaderboard cannot see at a glance which model lab leads. The scoreboard shows the top three labs as equal cards, so they read each number to compare.

This is layer 3 of 3. It reuses the winner crown from #114811 on a page that is not a dashboard.

Changes

The lab scoreboard crowns the card with the highest share. The crown follows the Calls and Users toggle. A tie crowns each tied lab, and a scoreboard where every share is zero crowns none.
The crown and the cheeky hog now live in lib/components/TileDecorations, because products cannot import from each other. Dashboard tiles use the same component.
The hog rises when any card that holds it is hovered, not only a dashboard tile. Dashboard behavior is unchanged.
Mechanical: the first commit only moves and renames (TileDecorations, TileBadge, --tile-hog-slide-duration).

Before is the same cards without the crown. It was not captured.

Light	Dark	Narrow, 520px

How did you test this code?

Test rationale: The new test.each rows for leadingLabs catch a tie that crowns one lab, a scoreboard of zeros that crowns the first card, and an empty scoreboard that throws. They failed before the function existed.

Looked at the existing leaderboard story in Storybook with fake data: light, dark and 520px wide.
On the dashboard story, a real hover raises the hog and the hog slides back down after the pointer leaves. The crown and the group title still render.
The existing leaderboard story now shows a crown, so its two snapshots change and need approval.
Not checked: a scoreboard with xAI in the top three, because the story data has Anthropic, OpenAI and Google.

Release status

No feature flag controls this change

Docs update

None.

🤖 Agent context

Autonomy: Human-driven (agent-assisted)

Agent: Claude Code, Sonnet 5

Skills invoked: /writing-ui-components, /writing-tests, /writing-pr-descriptions.
Stacked on feat(dashboards): show winner crown, cheeky hog and group titles on tiles #114811, which sits on feat(dashboards): add tile groups and badges to the dashboard API and MCP #114783. Merge those first.

Created with PostHog Desktop

posthog · 2026-10-10T11:02:47Z

PostHog Review · Standard · reviewed `419d507`

Nothing to post.

Step	Status	Result
Prepare the diff	done	10 files
Main review and lenses	done	0 issues
Merge and cap	done	0 → 0
Publish	done	Nothing to post

github-actions · 2026-10-10T11:04:45Z

🤖 CI report

⚠️

Trunk lane — backend Python lane

This PR is assigned to the backend Python lane. It runs backend Python tests and may merge in parallel with PRs in other lanes.

⚠️

Complexity (TypeScript) — 2 functions above the limit (max 30)

Cyclomatic complexity above the limit in changed typescript files (10 for production files, 15 for test files). Warn only: worth simplifying when you next touch these functions.

Function	Location	Complexity	Limit
`DashboardItems`	`frontend/src/scenes/dashboard/DashboardItems.tsx:84`	30	10
`<anonymous>`	`frontend/src/scenes/dashboard/DashboardItems.tsx:527`	21	10

✅ Duplication (Python) — clean

New Python code duplication introduced by this branch. Fails at 70+ tokens in app code, or 150+ tokens when both copies live in test files. Advisory while the gate proves itself: extract a shared helper instead of copying.

✅ Duplication (TypeScript) — clean

New TypeScript code duplication introduced by this branch. Fails at 70+ tokens in app code, or 150+ tokens when both copies live in test files. Advisory while the gate proves itself: extract a shared helper instead of copying.

⚠️

Bundle size — 🔺 +641 B (+0.0%)

Uncompressed size of every built .js bundle, compared against the base branch.

Total: 75.57 MiB · 🔺 +641 B (+0.0%)

No file changed by more than 1000 B.

_{Posted automatically by build-bundle-size-report · uncompressed bytes from dist-report}

✅ Eager graph — within budget

How much code each root ships on the eager path — downloaded and parsed before the surface is interactive. Measured from the esbuild output chunks (post-tree-shake, static imports only); lazy import() / React.lazy chunks are not counted.

Root	Eager (shipped)	Δ vs base	Budget
entry (logged-out pages, app bootstrap) `src/index.tsx`	1.67 MiB · 23 files	🟢 -127 B (-0.0%)	`█████████░` 90.7% of 1.84 MiB
logged-out boot: index + App + bootApp (preloaded by every page, including /login) `src/index.tsx + src/scenes/App.tsx + src/scenes/bootApp.ts`	3.83 MiB · 675 files	🟢 -127 B (-0.0%)	`██████████` 95.0% of 4.03 MiB
authenticated shell (every logged-in page) `src/scenes/AuthenticatedShell.tsx`	7.79 MiB · 2,463 files	🟢 -127 B (-0.0%)	`█████████░` 93.4% of 8.34 MiB
dashboard scene `src/scenes/dashboard/Dashboard.tsx`	9.95 MiB · 3,534 files	🔺 +166 B (+0.0%)	`█████████░` 91.1% of 10.92 MiB
today home path `src/scenes/AuthenticatedShell.tsx + src/scenes/project-homepage/ProjectHomepage.tsx + src/scenes/project-homepage/today/TodayHome.tsx`	7.81 MiB · 2,473 files	🟢 -127 B (-0.0%)	`█████████░` 90.9% of 8.58 MiB
events scene `src/scenes/activity/explore/EventsScene.tsx`	9.55 MiB · 3,373 files	🟢 -127 B (-0.0%)	`█████████░` 90.9% of 10.51 MiB
replay detail scene `src/scenes/session-recordings/detail/SessionRecordingDetail.tsx`	12.36 MiB · 4,204 files	🟢 -127 B (-0.0%)	`████████░░` 78.6% of 15.72 MiB

🟢 node_modules/monaco-editor/ stays out of src/index.tsx
🟢 src/lib/components/ActivityLog/describers stays out of src/index.tsx
🟢 node_modules/@posthog/brand/dist/generated/hoggies/svg/ stays out of src/index.tsx
🟢 node_modules/@posthog/brand/dist/generated/hoggies/components/ stays out of src/index.tsx
🟢 node_modules/monaco-editor/ stays out of src/index.tsx + src/scenes/App.tsx + src/scenes/bootApp.ts
🟢 src/layout/navigation-3000/navigationLogic.tsx stays out of src/index.tsx + src/scenes/App.tsx + src/scenes/bootApp.ts
🟢 src/scenes/dashboard/dashboardLogic.tsx stays out of src/index.tsx + src/scenes/App.tsx + src/scenes/bootApp.ts
🟢 src/lib/lemon-ui/LemonMarkdown/ stays out of src/index.tsx + src/scenes/App.tsx + src/scenes/bootApp.ts
🟢 src/lib/components/RichContentEditor/ stays out of src/index.tsx + src/scenes/App.tsx + src/scenes/bootApp.ts
🟢 src/lib/components/CodeSnippet/ stays out of src/index.tsx + src/scenes/App.tsx + src/scenes/bootApp.ts
🟢 src/taxonomy/core-filter-definitions-by-group.json stays out of src/index.tsx + src/scenes/App.tsx + src/scenes/bootApp.ts
🟢 node_modules/monaco-editor/ stays out of src/scenes/AuthenticatedShell.tsx
🟢 src/lib/components/ActivityLog/describers stays out of src/scenes/AuthenticatedShell.tsx
🟢 products/dashboards/frontend/widgets/previews/ stays out of src/scenes/AuthenticatedShell.tsx
🟢 src/scenes/session-recordings/player/sessionRecordingPlayerLogic.ts stays out of src/scenes/AuthenticatedShell.tsx
🟢 zod/v4/locales/de.js stays out of src/scenes/AuthenticatedShell.tsx
🟢 node_modules/@posthog/brand/dist/generated/hoggies/svg/ stays out of src/scenes/AuthenticatedShell.tsx
🟢 node_modules/@posthog/brand/dist/generated/hoggies/components/ stays out of src/scenes/AuthenticatedShell.tsx
🟢 src/scenes/session-recordings/playlist/SessionRecordingsPlaylist.tsx stays out of src/scenes/dashboard/Dashboard.tsx
🟢 src/scenes/web-analytics/tiles/WebAnalyticsTile.tsx stays out of src/scenes/dashboard/Dashboard.tsx
🟢 src/scenes/project-homepage/ai-first/AiFirstHomepage.tsx stays out of src/scenes/AuthenticatedShell.tsx + src/scenes/project-homepage/ProjectHomepage.tsx + src/scenes/project-homepage/today/TodayHome.tsx
🟢 src/scenes/project-homepage/today/TodayReportPage.tsx stays out of src/scenes/AuthenticatedShell.tsx + src/scenes/project-homepage/ProjectHomepage.tsx + src/scenes/project-homepage/today/TodayHome.tsx
🟢 src/queries/Query/Query.tsx stays out of src/scenes/AuthenticatedShell.tsx + src/scenes/project-homepage/ProjectHomepage.tsx + src/scenes/project-homepage/today/TodayHome.tsx
🟢 src/scenes/session-recordings/playlist/SessionRecordingsPlaylist.tsx stays out of src/scenes/activity/explore/EventsScene.tsx
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_{Posted automatically by check-eager-graph · sizes are eager output bytes (shipped, post-tree-shake) from the esbuild metafile · part of #32479}

✅ Toolbar bundle — eager 2.24 MiB within budget

What the toolbar ships to customer pages, measured from the esbuild output (minified, post-tree-shake). The eager set is the entry plus everything statically imported from it — fetched before any feature runs; deferred chunks load lazily. The eager guardrail is 5.72 MiB. Each output file must also stay below 10 MB, where CloudFront stops compressing it. The module boundary is enforced separately by check-toolbar-graph.

Metric	Size	Δ vs base	Budget
Eager (shipped) entry + static imports	2.24 MiB · 19 files	no change	`████░░░░░░` 39.2% of 5.72 MiB
Deferred (lazy)	2.19 MiB · 44 files	no change	n/a — loads on demand
Loader `dist/toolbar.js`	1.2 KiB	no change	`█░░░░░░░░░` 6.0% of 19.5 KiB

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✅ Dist folder size — 🔺 +1.6 KiB (+0.0%)

Total size of the built frontend/dist folder (all assets), compared against the base branch.

Total: 1007.80 MiB · 🔺 +1.6 KiB (+0.0%)

✅ Playwright — all passed

All tests passed.

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✅ Hogbox preview — ready, open the preview

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🔑 Login	`test@posthog.com` / `12345678` (demo data)
🧩 Running	this PR's backend and frontend, on the PostHog `:master` base
🔗 Link	stable across rebuilds: a re-push swaps the box underneath, the URL stays
🔒 Access	tailnet only (PostHog VPN)
🛠️ Admin	inspect & debug state in hogland
💤 Idle	sleeps after ~30 min idle (snapshot to S3, zero node cost) and wakes on your next visit in ~30s, behind a brief "waking up" screen

_{commit 419d507 · box box-e965679f300e · ready in 1123s (push → usable) · build log · rebuilds on every push, torn down on close}

posthog · 2026-10-10T11:20:46Z

🕓 This approval covered an earlier revision. There are new visual changes to review in the newer comment below.

✅ Visual changes approved by @pauldambra — baseline updated in 9f19ae5.

View this run in PostHog

4 new.

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trunk-io · 2026-10-10T11:20:58Z

Failed Test	Failure Summary	Logs
`personalAPIKeysLogic clamps a group write to what each row can take`	The test exceeded the maximum allowed time of 5000 ms and did not complete.	Logs ↗︎

_{View Full Report ↗︎ ⋅ Docs}

parameterai · 2026-10-10T11:24:09Z

Risk: No findings

The change since the last review adds only a Storybook snapshot-test option (skipCanvasDraw) to the TileDecorations stories file; it is test configuration with no runtime, API, or data-handling surface. All previously reviewed layers of the pull request are unchanged since the last review, which found no issues.

_{Sentinel reviewed 5f51674 · Review settings}

chatgpt-codex-connector · 2026-10-10T11:24:15Z

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-10-10T11:27:29.144154Z	`8e943db`	Draft marked ready

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posthog · 2026-10-10T11:42:25Z

🕓 This approval covered an earlier revision. There are new visual changes to review in the newer comment below.

✅ Visual changes approved by @pauldambra — baseline updated in b2a2667.

View this run in PostHog

4 new.

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trunk-io · 2026-10-10T13:46:38Z

😎 Stack merged successfully - details.

A new stamphog review started for this PR — the fresh verdict replaces this approval.

pauldambra · 2026-10-10T15:24:05Z

Note

🤖 Automated comment by QA Swarm — not written by a human

Review by one cheap first-pass reviewer (sonnet). It found nothing that needed a stronger reviewer, so none was called.

Verdict: ✅ APPROVE _{(round 1 @ 0bbbe5e)}

No defects above NIT. The crown works on the MCP analytics lab scoreboard, and dashboards keep their behavior after the move.

Key findings

⚪ NIT, checked In Users mode the crown on the first card might touch the caption above it. I measured it in a browser at 1280px and 520px. The caption ends 1px above the crown. They do not overlap.
⚪ NIT, left as is The crown says "Winner" without the lab name. When two labs tie, a screen reader hears "Winner" twice. A lab name needs a new prop on the shared component. Not worth it now.
⚪ NIT, left as is leadingLabs crowns every lab tied for first, including a three-way tie. That is the intended rule, and the tests cover a tie, all zeros and no labs.

Checked and clean

No old names are left after the move. The new hover rule matches the same elements as before for all five dashboard tile kinds. The crown is a sibling of the card, so the card's overflow: hidden cannot cut it off. The wrapper keeps the card height and the data-attr hook. Ties are safe with floats, because tied labs have identical inputs.

Reviewer summaries

Reviewer	Assessment
🧭 router	Danger LOW, confidence HIGH. Delegated nothing.

Previous rounds (0)

First round on this PR.

Automated by QA Swarm — not a human review

The winner crown and the cheeky hog were made for dashboard tiles, but a second feature now needs them. The component moves from the dashboards product to lib/components, because products do not import from each other. Names follow: TileDecorations, TileBadge and the tile-hog-slide-duration property. The hog now rises when any card that holds it is hovered, not only a grid tile. Dashboard behavior is unchanged. Generated-By: PostHog Desktop Task-Id: a0588627-3b8c-4fc5-b331-716af1994715

…erboard The lab scoreboard shows the top three labs as cards. The card with the highest share now wears the winner crown, for calls and for users. A tie at the top crowns each tied lab, and no lab is crowned when every share is zero. Generated-By: PostHog Desktop Task-Id: a0588627-3b8c-4fc5-b331-716af1994715

A new stamphog review started for this PR — the fresh verdict replaces this approval.

The full dashboard snapshot raced the async chart paint, so the weekly file volume line was drawn in some runs and not in others. Generated-By: PostHog Desktop Task-Id: ce157272-6ad8-42da-8ce3-4fe4f408f574

A new stamphog review started for this PR — the fresh verdict replaces this approval.

posthog · 2026-10-10T21:03:00Z

✅ Visual changes approved by @pauldambra — baseline updated in 419d507.

View this run in PostHog

4 changed.

Changed

Snapshot	Before	After
`products-dashboards-tiles-tile-decorations--cheeky-hog-on-hover--dark`
`products-dashboards-tiles-tile-decorations--cheeky-hog-on-hover--light`
`products-dashboards-tiles-tile-decorations--winner-with-group-title--dark`
`products-dashboards-tiles-tile-decorations--winner-with-group-title--light`

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4 updated Run: 8dbfdee0-4f89-40f2-9dc8-9888a43f09d2 Co-authored-by: pauldambra <984817+pauldambra@users.noreply.github.com>

A new stamphog review started for this PR — the fresh verdict replaces this approval.

stamphog

Approved.

Contained, reversible frontend changes with focused tests and no unresolved substantive review concerns. No risky behavior or policy refusal grounds were found; scanning comments and the thumbs-up reaction are not current-head reviews.

Author wrote 87% of the modified lines and has 83 merged PRs in these paths (familiarity STRONG).
👍 on the PR from chatgpt-codex-connector[bot].

Gate mechanics and policy version

Gate		Result
prerequisites	✓	all clear
deny-list	✓	no deny categories matched
size	✓	104L, 9F substantive, 120L/10F incl. docs/generated/snapshots — within ceiling
tier	✓	T1-agent / T1c-medium (120L, 10F, two-areas, feat)
stamphog 2.4.1		`.stamphog/policy.yml` @ `419d507` · reviewed head `419d507`

deployment-status-posthog · 2026-10-11T05:44:30Z

Deploy status

Environment	Status	Deployed At	Workflow
dev	✅ Deployed	2026-10-11 05:44 UTC	Run
prod-us	✅ Deployed	2026-10-11 05:58 UTC	Run
prod-eu	✅ Deployed	2026-10-11 05:58 UTC	Run

pauldambra self-assigned this Oct 10, 2026

pauldambra added this pull request to stack #114876 October 10, 2026 11:02

pauldambra force-pushed the posthog/lab-scoreboard-winner branch from 9f19ae5 to 8e943db Compare October 10, 2026 11:23

pauldambra marked this pull request as ready for review October 10, 2026 11:24

pauldambra added the stamphog Request AI approval (no full review) label Oct 10, 2026 — with PostHog

github-actions Bot deployed to preview-pr-114881 October 10, 2026 11:24 View deployment

pr-assigner-resolver-posthog Bot requested review from a team October 10, 2026 11:25