feat: dashboard v2.1 glassmorphism + graph decomposition + fix flaky macOS vector test

Dashboard v2.1 "Nuclear" upgrade:
- Dark glassmorphism UI system (4-tier glass utilities, ambient orbs, nav glow)
- Graph3D decomposed from 806-line monolith into 10 focused modules
- Custom GLSL shaders (nebula FBM background, chromatic aberration, film grain, vignette)
- Enhanced dream mode with smooth 2s lerped transitions and aurora cycling
- Cognitive pipeline visualizer (7-stage search cascade animation)
- Temporal playback slider (scrub through memory evolution over time)
- Bioluminescent color palette for node types and events

Fix flaky CI test on macOS:
- vector::tests::test_add_and_search used near-identical test vectors (additive phase shift)
- Changed to multiplicative frequency so each seed produces a distinct vector

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

crates/vestige-core/src/search/vector.rs

@@ -392,7 +392,7 @@ mod tests {
 
     fn create_test_vector(seed: f32) -> Vec<f32> {
         (0..DEFAULT_DIMENSIONS)
-            .map(|i| ((i as f32 + seed) / DEFAULT_DIMENSIONS as f32).sin())
+            .map(|i| ((i as f32 + 1.0) * seed).sin())
             .collect()
     }