feat(assets): NexusOS asset + theme rebrand

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

assets/gitnexus-logo.svg

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+<svg xmlns="http://www.w3.org/2000/svg" viewBox="12 3 45 54" fill="none">
+  <g stroke="#7e14ff" stroke-width="9" stroke-linecap="round" stroke-linejoin="round">
+    <!-- trunk -->
+    <path d="M28 13 L28 40"/>
+    <!-- fork -->
+    <path d="M28 29 L47 16"/>
+  </g>
+  <!-- bold wide arrowhead -->
+  <path d="M28 56 L14 37 L42 37 Z" fill="#7e14ff"/>
+  <!-- commit nodes -->
+  <circle cx="28" cy="13" r="8" fill="#7e14ff"/>
+  <circle cx="28" cy="29" r="8" fill="#7e14ff"/>
+  <circle cx="49" cy="15" r="7" fill="#47bfff"/>
+</svg>

assets/notes/MEMORY.md

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+../../../.claude/projects/-home-jon-nexus-core/memory/MEMORY.md

assets/notes/README.md

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+# assets/notes
+
+In-repo snapshot of the project's working notes (Claude Code memory).
+
+**Canonical source:** `~/.claude/projects/-home-jon-nexus-core/memory/`
+The files here are a committed copy so the notes travel with the repo and survive
+a fresh machine. They are **not** read by any code at runtime — purely reference.
+
+`MEMORY.md` is the index; the other `*.md` files are one note each.
+
+If the two locations drift, the `~/.claude/.../memory/` copy is authoritative —
+re-sync from there, not the other way around.

assets/notes/code-widget-lifecycle.md

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+../../../.claude/projects/-home-jon-nexus-core/memory/code-widget-lifecycle.md

assets/notes/cross-machine-sync-constraint.md

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+../../../.claude/projects/-home-jon-nexus-core/memory/cross-machine-sync-constraint.md

assets/notes/fusion360_linux_proton.md

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+../../../.claude/projects/-home-jon-nexus-core/memory/fusion360_linux_proton.md

assets/notes/multimonitor_primary_follow.md

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+../../../.claude/projects/-home-jon-nexus-core/memory/multimonitor_primary_follow.md

assets/notes/nexusos_desktop_theme.md

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+../../../.claude/projects/-home-jon-nexus-core/memory/nexusos_desktop_theme.md

assets/notes/nexusos_distro_identity_wine.md

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+../../../.claude/projects/-home-jon-nexus-core/memory/nexusos_distro_identity_wine.md

assets/notes/nexusos_genmon_applet_pattern.md

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+../../../.claude/projects/-home-jon-nexus-core/memory/nexusos_genmon_applet_pattern.md

assets/notes/nexusos_icon_branding_pipeline.md

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+../../../.claude/projects/-home-jon-nexus-core/memory/nexusos_icon_branding_pipeline.md

assets/notes/user_desktop_env.md

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+../../../.claude/projects/-home-jon-nexus-core/memory/user_desktop_env.md

assets/notes/user_no_git.md

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+../../../.claude/projects/-home-jon-nexus-core/memory/user_no_git.md