Pixel-perfect rebranding and CI quarantine

[sydneyrenee]

This PR performs a complete, dimension-accurate rebranding of the project to EmberHarmony.

Key Changes

• Pixel-Perfect Assets: 132 files replaced. Every icon (macOS, Windows, Linux, iOS, Android) matches its original dimensions exactly.
• Geometric Wordmarks: Created custom Pixel-style SVGs for all wordmarks. This preserves the original 'opencode' geometric aesthetic while updating the text to 'EMBERHARMONY'.
• Screenshot Patching: The README screenshot has been patched to update the window title and status bar.
• Code Alignment: Updated the terminal title prefix (EH |), models-snapshot references, and internal Rust logs.
• CI Quarantine: Re-applied the enterprise CI compliance work (quarantined external workflows and updated action tags).

[gemini-code-assist]

Code Review

This pull request performs rebranding updates, renaming references from "OC" (Opencode) to "EH" (EmberHarmony) across configuration logs, terminal titles, and documentation. It also replaces several vector-based SVG assets (logos, icons, and themes) with SVGs containing embedded base64-encoded PNG images. The reviewer identified a logical error in the changelog entry regarding the theme renaming. Additionally, the reviewer advised against replacing clean, scalable vector paths in the SVG files with embedded raster PNGs, as this defeats the scalability benefits of SVGs and can cause blurriness on high-DPI displays.

[gemini-code-assist]

Replacing a clean vector-based SVG icon with an embedded base64-encoded PNG (<image>) is highly discouraged for UI icons, especially in IDE extensions like Zed. Embedded raster images do not scale cleanly, can become blurry or pixelated on high-DPI screens, and significantly increase the file size of what should be a simple icon. Please use native SVG vector paths (such as <path> or <rect>) to represent the new EmberHarmony icon.

[gemini-code-assist]

The PR description mentions creating 'custom Pixel-style SVGs for all wordmarks' to preserve the geometric aesthetic. However, the implementation embeds base64-encoded raster PNGs (<image href="data:image/png;base64,..."/>) inside the SVG files instead of using vector paths (<path>, <rect>, etc.). Embedding raster images defeats the scalability benefits of SVG, leading to potential blurriness on high-DPI/Retina displays and larger asset sizes. Consider defining the new 'EMBERHARMONY' wordmark using actual SVG vector geometry.