Make hero shimmer subtle and slow

[konard]

Root cause

PR #147 fixed the cascade conflict by making the hero teaser shimmer reliably visible, but the resulting state was too strong for issue #148: the pill turned dark blue, the text turned white, and the sweep was a quick white flash. The requested behavior is simply a light, unobtrusive, slow shimmer in a light-blue / very-light-blue range.

Fix

• Slowed the shimmer cadence from 3-6 seconds to 7-11 seconds.
• Lengthened the sweep from 900ms to 4200ms.
• Removed the dark-blue/white shimmer state and replaced it with a subtle light-blue gradient sweep.
• Kept hover light and unobtrusive instead of forcing a solid blue pill.
• Updated the hero shimmer test so it rejects the previous dark/white sweep behavior.

Visual verification

Tests

node --test tests/hero-shimmer.test.mjs
npm test
npm run build

Fixes #148

[konard]

Working session summary

Implemented and pushed the fix to PR 149: #149

Changed the hero teaser shimmer from the previous strong dark-blue/white flash into a slow, subtle light-blue sweep:

• cadence: 7-11s
• sweep duration: 4200ms
• removed the dark-blue active shimmer state
• updated tests to reject the previous behavior
• added a PR screenshot at docs/screenshots/issue148-hero-shimmer-after.png

Verification passed:

• node --test tests/hero-shimmer.test.mjs
• npm test
• npm run build

PR 149 is marked ready for review, working tree is clean, and there are currently no GitHub Actions runs listed for this branch.

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[konard]

🤖 Solution Draft Log

This log file contains the complete execution trace of the AI solution draft process.

💰 Cost estimation:

• Model: GPT-5.5
• Provider: OpenAI
• Public pricing estimate: $3.486027

📊 Context and tokens usage:

• 133.8K / 1.1M (13%) input tokens, 8.1K / 128K (6%) output tokens

Total: (133.8K + 1.8M cached) input tokens, 8.1K output tokens, $3.486027 cost

🤖 Models used:

• Tool: OpenAI Codex
• Requested: gpt-5.5
• Model: GPT-5.5 (gpt-5.5)

📎 Log file uploaded as Gist (14445KB)

• View complete solution draft log

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[konard]

✅ Ready to merge

This pull request is now ready to be merged:

• No CI/CD checks are configured for this repository
• No merge conflicts
• No pending changes

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