fix: use PriceHawk icon in dashboard nav and favicon

[Artic0din]

Summary

• Replace CSS gradient "P" in nav bar with actual PriceHawk icon.png
• Add favicon pointing to /local/pricehawk/icon.png
• Update dashboard_config.py to copy icon.png to www/pricehawk/ on setup

Follow-up to PR #10 — the icon files landed but the dashboard HTML and config changes were missed.

🤖 Generated with Claude Code

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 817b4c04-dbbd-4284-b0ec-aba135ae934e

📥 Commits

Reviewing files that changed from the base of the PR and between 0617419 and ccc7f1c.

📒 Files selected for processing (2)

• custom_components/pricehawk/dashboard_config.py
• custom_components/pricehawk/www/dashboard.html

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📝 Walkthrough

Summary by CodeRabbit

• UI/UX Improvements
  • Added favicon support to dashboard for browser tab display
  • Updated navigation logo from text-based design to image-based rendering
  • Enhanced dashboard visual styling and consistency

Walkthrough

Updates the asset copying logic to handle PNG icon files and modifies the dashboard HTML to display an image-based logo with favicon support, replacing the previous text-based design element.

Changes

Cohort / File(s)	Summary
Asset Handling Configuration custom_components/pricehawk/dashboard_config.py	Modified copy_www_assets function to use Path-based source paths, introduce conditional copying of icon.png, and write inline SVG icon to a renamed destination variable. Variable names and path construction adjusted for icon asset management.
Dashboard UI & Styling custom_components/pricehawk/www/dashboard.html	Added favicon link to reference PNG icon, replaced text-based nav brand logo with image-based logo using <img> element, updated CSS styling for image sizing and fit, and removed light-mode specific text color rule.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/dashboard-icon-nav

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