fix(skills): densify changelog caption checks

Author: miguel-heygen

.agents/skills/changelog-video/SKILL.md

@@ -145,7 +145,7 @@ scaffold.
 
 ### 6 · Gates (all green before presenting)
 
-1. `bun run --cwd packages/cli hyperframes check --caption-zone "x0=0;y0=.90;x1=1;y1=1;severity=error;seek=.05,.15,.25,.35,.45,.55,.65,.75,.85,.95"` (or the installed
+1. `bun run --cwd packages/cli hyperframes check --caption-zone "x0=0;y0=.90;x1=1;y1=1;severity=error;seek=.02,.06,.10,.14,.18,.22,.26,.30,.34,.38,.42,.46,.50,.54,.58,.62,.66,.70,.74,.78,.82,.86,.90,.94,.98"` (or the installed
    `hyperframes` CLI from the repo-local `skills/hyperframes-cli/` skill) —
    0 errors (contrast: dim text ≥ .66 alpha; scene content stays above the
    caption rail). Do NOT reach for

.claude/skills/changelog-video/SKILL.md

@@ -145,7 +145,7 @@ scaffold.
 
 ### 6 · Gates (all green before presenting)
 
-1. `bun run --cwd packages/cli hyperframes check --caption-zone "x0=0;y0=.90;x1=1;y1=1;severity=error;seek=.05,.15,.25,.35,.45,.55,.65,.75,.85,.95"` (or the installed
+1. `bun run --cwd packages/cli hyperframes check --caption-zone "x0=0;y0=.90;x1=1;y1=1;severity=error;seek=.02,.06,.10,.14,.18,.22,.26,.30,.34,.38,.42,.46,.50,.54,.58,.62,.66,.70,.74,.78,.82,.86,.90,.94,.98"` (or the installed
    `hyperframes` CLI from the repo-local `skills/hyperframes-cli/` skill) —
    0 errors (contrast: dim text ≥ .66 alpha; scene content stays above the
    caption rail). Do NOT reach for

packages/cli/src/commands/changelogSkillContent.test.ts

@@ -19,9 +19,12 @@ describe("changelog-video layout contract", () => {
   });
 
   it("checks scene content against the caption rail while exempting the rail itself", () => {
-    expect(skill).toContain(
-      '--caption-zone "x0=0;y0=.90;x1=1;y1=1;severity=error;seek=.05,.15,.25,.35,.45,.55,.65,.75,.85,.95"',
-    );
+    const seekList = /--caption-zone "[^"]*seek=([.\d,]+)"/.exec(skill)?.[1];
+    const seeks = seekList?.split(",").map(Number) ?? [];
+    expect(seeks).toHaveLength(25);
+    expect(
+      Math.max(...seeks.slice(1).map((seek, index) => seek - seeks[index])) * 60,
+    ).toBeLessThanOrEqual(2.401);
     expect(skeleton).toMatch(/id="cap-line"[^>]*data-layout-allow-caption-zone/);
   });
 });