Add Mythara to App Projects

[ankurCES]

What this adds

A new entry under App Projects (appended at end of section):

- [Mythara](https://github.com/ankurCES/project_mythara) - Open-source local-first agentic AI OS layer for Android. 65+ on-device agent tools, multi-skin theme engine, on-device personality analysis. MIT.

Why it fits

Mythara is a fully Jetpack-Compose Android app (Kotlin + Hilt + Compose throughout) that's actively maintained and MIT-licensed. It's a complete sideloadable app (./gradlew :app:assembleDebug && adb install).

A few Compose patterns the repo demonstrates that may interest visitors to this list:

• Multi-skin theme engine via CompositionLocal — MythPalette + SkinSpec propagate through 21 routes with zero per-screen edits
• 330-LOC in-house Markdown renderer (zero deps) handling the CommonMark subset
• Animated particle face mesh using withFrameNanos + per-particle Gaussian sphere math
• Brand-mark geometry shared with a Wear OS face + a live wallpaper

Compliance

• License: MIT
• Format matches existing entries (- [Name](url) - description)
• Description under one line