From 0017f1d6da46016543342a3f66f2d526cd5f33ec Mon Sep 17 00:00:00 2001
From: Flotapponnier <160007691+Flotapponnier@users.noreply.github.com>
Date: Wed, 16 Sep 2026 14:07:13 +0200
Subject: [PATCH] head-lag: Solana offers only First to report (spec
 chart.hide_headline_by_chain) (#2394)

Claude-Session: https://claude.ai/code/session_01HJgbZCqjR4nvCfcJSzofbw

Co-authored-by: Flotapponnier <florent@mobula.io>
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
(cherry picked from commit 42d25f5814260b6ef7ca117d86e5bb23bbb29b6d)
---
 benchmarks/aggregator-head-lag.yml  |  1 +
 src/components/benchmark-body.tsx   |  6 ++++++
 src/components/metric-view-tabs.tsx | 17 +++++++++++------
 src/lib/materialize/load.ts         |  2 ++
 src/lib/spec-schema.ts              |  7 +++++++
 src/types/benchmark.ts              |  2 ++
 6 files changed, 29 insertions(+), 6 deletions(-)

diff --git a/benchmarks/aggregator-head-lag.yml b/benchmarks/aggregator-head-lag.yml
index 522c50c5..376f2c01 100644
--- a/benchmarks/aggregator-head-lag.yml
+++ b/benchmarks/aggregator-head-lag.yml
@@ -97,6 +97,7 @@ source: https://github.com/ChainBench/OpenChainBench/tree/main/harnesses/aggrega
 chart:
   default_panel_by_chain:
     solana: first_share
+  hide_headline_by_chain: [solana]
 
 metric_panels:
   - id: first_share
diff --git a/src/components/benchmark-body.tsx b/src/components/benchmark-body.tsx
index 8264afaa..7076a45d 100644
--- a/src/components/benchmark-body.tsx
+++ b/src/components/benchmark-body.tsx
@@ -311,6 +311,10 @@ export function BenchmarkBody({
   // while Base keeps the head lag headline. A ?view= in the URL wins on
   // first paint; after that the chain tab drives it like a fresh visit.
   const defaultPanelByChain = Object.values(variants)[0]?.chart?.defaultPanelByChain;
+  const hideHeadline = Boolean(
+    effectiveChain &&
+      Object.values(variants)[0]?.chart?.hideHeadlineByChain?.includes(effectiveChain),
+  );
   const urlViewPinned = useRef(Boolean(urlView));
   useEffect(() => {
     if (!defaultPanelByChain) return;
@@ -866,6 +870,7 @@ export function BenchmarkBody({
                         mainDescription={benchmark.panelMainDescription}
                         activeId={activePanelId}
                         onSelect={setActivePanelId}
+                        hideMain={hideHeadline}
                       />
                     ) : null;
                   })()}
@@ -914,6 +919,7 @@ export function BenchmarkBody({
                         mainDescription={benchmark.panelMainDescription}
                         activeId={activePanelId}
                         onSelect={setActivePanelId}
+                        hideMain={hideHeadline}
                       />
                     ) : null;
                   })()}
diff --git a/src/components/metric-view-tabs.tsx b/src/components/metric-view-tabs.tsx
index 0419a5f6..8bd25ccd 100644
--- a/src/components/metric-view-tabs.tsx
+++ b/src/components/metric-view-tabs.tsx
@@ -23,12 +23,15 @@ export function MetricViewTabs({
   mainDescription,
   activeId,
   onSelect,
+  hideMain = false,
 }: {
   panels: MetricPanel[];
   mainLabel: string;
   mainDescription?: string;
   activeId: string | null;
   onSelect: (id: string | null) => void;
+  /** Drop the headline tab (spec chart.hide_headline_by_chain). */
+  hideMain?: boolean;
 }) {
   const active = activeId == null ? null : panels.find((p) => p.id === activeId);
   const activeDescription =
@@ -40,12 +43,14 @@ export function MetricViewTabs({
         <span className="mr-2 text-[10px] uppercase tracking-[0.16em] text-ink-faint">
           View
         </span>
-        <Tab
-          label={mainLabel}
-          description={mainDescription}
-          active={activeId == null}
-          onClick={() => onSelect(null)}
-        />
+        {!hideMain && (
+          <Tab
+            label={mainLabel}
+            description={mainDescription}
+            active={activeId == null}
+            onClick={() => onSelect(null)}
+          />
+        )}
         {panels.map((p) => (
           <Tab
             key={p.id}
diff --git a/src/lib/materialize/load.ts b/src/lib/materialize/load.ts
index 68c06a72..3f6bbc52 100644
--- a/src/lib/materialize/load.ts
+++ b/src/lib/materialize/load.ts
@@ -38,6 +38,7 @@ export function chartFromSpec(spec: {
     default_range?: "24h" | "7d" | "30d" | "90d" | "1y";
     window_label?: string;
     default_panel_by_chain?: Record<string, string>;
+    hide_headline_by_chain?: string[];
   };
 }): Benchmark["chart"] {
   if (!spec.chart) return undefined;
@@ -46,6 +47,7 @@ export function chartFromSpec(spec: {
     defaultRange: spec.chart.default_range,
     windowLabel: spec.chart.window_label,
     defaultPanelByChain: spec.chart.default_panel_by_chain,
+    hideHeadlineByChain: spec.chart.hide_headline_by_chain,
   };
 }
 
diff --git a/src/lib/spec-schema.ts b/src/lib/spec-schema.ts
index 84071083..eb01a897 100644
--- a/src/lib/spec-schema.ts
+++ b/src/lib/spec-schema.ts
@@ -491,6 +491,13 @@ export const SpecSchema = z
             z.string().regex(/^[a-z][a-z0-9_]*$/),
           )
           .optional(),
+        /** Chains whose headline view is removed from the view switcher
+         *  (the chain must have a default_panel_by_chain entry). Solana on
+         *  aggregator-head-lag: the headline is a relative lag whose leader
+         *  reads 1 ms by construction, so only the panels are offered. */
+        hide_headline_by_chain: z
+          .array(z.string().regex(/^[A-Za-z0-9][A-Za-z0-9_-]{0,63}$/))
+          .optional(),
       })
       .strict()
       .optional(),
diff --git a/src/types/benchmark.ts b/src/types/benchmark.ts
index 87b0c61f..77a60292 100644
--- a/src/types/benchmark.ts
+++ b/src/types/benchmark.ts
@@ -344,6 +344,8 @@ export type Benchmark = {
     windowLabel?: string;
     /** Chain dimension value -> metric panel id to open on. */
     defaultPanelByChain?: Record<string, string>;
+    /** Chains whose headline view tab is not offered. */
+    hideHeadlineByChain?: string[];
   };
   /** When true the bench page renders a stacked bar chart (absolute + %
    *  share over time) below the main chart. Set via `stacked_share: true`