chore: add app favicon

[florianhorner]

What does this PR do?

Adds the existing lightning-bolt app icon as the web favicon and generates its public copy from the shared icon generator so the two stay in sync.

How to test

Run VITE_DEMO_MODE=true npm run build, then confirm dist/favicon.png exists and dist/index.html links to it.

Checklist

• npm run test passes (245 tests)
• npm run lint passes (one pre-existing warning)
• npm run typecheck passes
• npm run format:check passes
• README updated (not applicable)

Proof

• build: VITE_DEMO_MODE=true npm run build
• tests: npm run test (245 passed)
• lint: npm run lint (0 errors; one existing warning)
• runtime: public/favicon.png
• schema: n/a — no API or schema changes

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Project	Deployment	Actions	Updated (UTC)
quick-flow-exporter	Ready	Preview, Comment	Jul 12, 2026 9:02pm

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Review details

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro

Run ID: 36bee252-3ca6-452d-a87e-4009db4cc51f

📥 Commits

Reviewing files that changed from the base of the PR and between db24248 and d923a93.

⛔ Files ignored due to path filters (1)

• public/favicon.png is excluded by !**/*.png

📒 Files selected for processing (2)

• index.html
• scripts/generate-icons.mjs

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch florianhorner/add-app-favicon

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