feat: Add SVG favicon and generated multi-platform favicon assets

[apicalshark]

Convert user-provided SVG into multi-platform favicon assets (SVG, ICO, 16x16/32x32 PNG, Apple Touch Icon, Android Chrome icons, and web manifest) and update templates and Quart routes to serve them correctly.

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PR created automatically by Jules for task 781672731602029672 started by @apicalshark

Summary by CodeRabbit

• New Features
  • Added favicon options for browser tabs, bookmarks, and Apple devices.
  • Added a web app manifest with app name, icons, colors, and standalone display settings.
  • The favicon and manifest are now served by the app.

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ℹ️ Recent review info

⚙️ Run configuration

• Configuration used: Organization UI
• Review profile: CHILL
• Plan: Advanced
• Run ID: 4d6b64da-c4cf-4e30-8aa7-4ccba82e9092

📥 Commits

Reviewing files that changed from the base of the PR and between e73e64d and 8fb94b7.

⛔ Files ignored due to path filters (7)

• static/android-chrome-192x192.png is excluded by !**/*.png
• static/android-chrome-512x512.png is excluded by !**/*.png
• static/apple-touch-icon.png is excluded by !**/*.png
• static/favicon-16x16.png is excluded by !**/*.png
• static/favicon-32x32.png is excluded by !**/*.png
• static/favicon.ico is excluded by !**/*.ico
• static/favicon.svg is excluded by !**/*.svg

📒 Files selected for processing (3)

• python/app.py
• static/site.webmanifest
• templates/themes/modern/base.html

Included review availability: This review used your included allowance. Your plan provides up to 1 included review per hour; 0 remain after this review.

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📝 Walkthrough

Walkthrough

The app now serves favicon.ico and site.webmanifest. The modern theme links to SVG and PNG favicons, an Apple touch icon, and the manifest.

Changes

Site icons and manifest

Layer / File(s)	Summary
Asset delivery and document links python/app.py, static/site.webmanifest, templates/themes/modern/base.html	The app serves the favicon and manifest. The manifest defines app name, icons, colors, and standalone display mode. The modern theme links to the icon assets and manifest.

Priority: ⬇️ Low

Estimated code review effort: 2 (Simple) | ~8 minutes

Change: Feature

Merge Risk: ⚪ Minimal · up to 6b5d0

The new favicon and manifest links map to available assets, and the manifest is served by the app. The reported registration omission is not present; no concrete issue remains to block merging.

Architecture Summary

Architecture risk: 🔵 Low · up to 8fb94

The change affects 3 systems.

Changed systems: python, static, templates

Architecture concerns
No architecture-level concerns identified.

Review details

Systems and components

• observed — python (service) was modified; 1 changed file maps to changed impact.
• observed — static (service) was modified; 1 changed file maps to changed impact.
• observed — templates (service) was modified; 1 changed file maps to changed impact.

Before / after behavior

• observed — Modified behavior in python/app.py: The favicon route now serves the static favicon.ico file instead of returning an empty 204 response; a /site.webmanifest route was added to serve the static manifest.
• observed — Modified behavior in static/site.webmanifest: Added the MikuInvidious manifest with two PNG icon entries, theme and background colors, and standalone display mode.
• observed — Modified behavior in templates/themes/modern/base.html: The document head now links to SVG and sized PNG favicons, an Apple touch icon, and /site.webmanifest.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 2 functions across 1 files. (2 skipped: 2 …	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the main change: adding an SVG favicon and generated favicon assets for multiple platforms.

Full details: Docstring Coverage

Explanation

Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 2 functions across 1 files. (2 skipped: 2 unsupported.)

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✨ Finishing Touches 💡 1

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_{A rabbit spots a favicon bright
And links the manifest into sight
Two icons mark the app’s display
The page now points the proper way
Then hops along beneath the moon}

_{Comment @coderabbitai help to get the list of available commands.}