fix(skills): stop a near-neutral color from being promoted to a brand accent

semanticColors() ranked every leftover preset color by chroma to pick
accent/accent2, with no floor. A preset with only one real accent (e.g.
broadside's fire-orange) still handed back an accents[1]: its next-highest
leftover, often a near-neutral grey text tone (broadside's cream-muted,
chroma 8). build-frame.mjs's remix then treated that as an exact accent2
match and repainted it with the brand's literal accent2 hex, turning a
muted grey text color into a saturated amber.

Add a chroma>=16 floor before a color counts as a real accent candidate,
matching the neutral cutoff the remix itself already uses to keep a grey
ladder grey. Below the floor, accent2 falls back to the primary accent.

skills-manifest.json

@@ -70,7 +70,7 @@
       "files": 30
     },
     "product-launch-video": {
-      "hash": "2c3d5d90b2b181a0",
+      "hash": "3f16091b195233bb",
       "files": 31
     },
     "remotion-to-hyperframes": {

skills/product-launch-video/scripts/build-frame.test.mjs

@@ -74,3 +74,11 @@ test("a light-ground preset (capsule) onto a light-mode brand is not inverted",
   const { stdout } = runBuildFrame("capsule", LIGHT_BRAND_TOKENS);
   assert.doesNotMatch(stdout, /INVERTED/);
 });
+
+test("broadside's cream-muted stays a neutral grey, not the brand's saturated accent", () => {
+  const { frameMd } = runBuildFrame("broadside", DARK_BRAND_TOKENS);
+  const m = /cream-muted:\s*"(#[0-9A-Fa-f]{6})"/.exec(frameMd);
+  assert.ok(m, "cream-muted key missing from frame.md");
+  // #FFB800 is the brand's literal accent2 — forced in before the fix.
+  assert.notEqual(m[1].toUpperCase(), "#FFB800");
+});

skills/product-launch-video/scripts/lib/tokens.mjs

@@ -181,12 +181,17 @@ export function semanticColors(colors, md) {
       byLum[byLum.length - 1] ?? colors[colors.length - 1],
     );
   const accents = colors
+    // A candidate must clear a neutral chroma floor to count as a real accent — otherwise a
+    // preset with only one genuine accent hands back a near-neutral leftover (e.g. a grey text
+    // tone at chroma ~8) as accent2, which then gets an exact-match repaint downstream. 16
+    // matches the neutral cutoff the remix itself already uses to keep a grey ladder grey.
     .filter(
       ([k, v]) =>
         v !== ink &&
         v !== canvas &&
         !UA_DEFAULT_COLORS.has(String(v).toUpperCase()) &&
-        !STATUS_ROLE_KEY.test(k), // a status red/green carries meaning by hue — never an accent
+        !STATUS_ROLE_KEY.test(k) && // a status red/green carries meaning by hue — never an accent
+        chroma(v) >= 16,
     )
     .sort((a, b) => chroma(b[1]) - chroma(a[1]))
     .map(([, v]) => v);

skills/product-launch-video/scripts/lib/tokens.test.mjs

@@ -122,3 +122,18 @@ test("every shipped preset's detected ground polarity matches its declared regis
     );
   }
 });
+
+test("semanticColors keeps a near-neutral 'second accent' neutral instead of promoting it", () => {
+  // broadside's cream-muted (#888880, chroma 8) is a muted grey text tone, not a real second
+  // brand accent — it must not win accent2 over the neutral chroma floor.
+  const colors = [
+    ["ink-black", "#111111"],
+    ["fire-orange", "#E85D26"],
+    ["cream", "#F0ECE5"],
+    ["cream-muted", "#888880"],
+  ];
+  const roles = semanticColors(colors);
+  assert.equal(roles.accent, "#E85D26");
+  assert.notEqual(roles.accent2, "#888880");
+  assert.equal(roles.accent2, "#E85D26"); // no 2nd real accent — falls back to the primary
+});