Supercharge tour de force with multidimensional visualization

Fix scroll sync: flip DAG to oldest-at-top so both the commit graph and the operation log scroll downward in the same direction during playback.

Add Dimension State Matrix — a full-width heatmap showing all 5 musical dimensions (melodic, rhythmic, harmonic, dynamic, structural) across every commit. Colored cells indicate which dimensions changed; a red-bordered cell marks the one dimension that conflicted at the merge commit (structural), while the other four auto-merged cleanly. This makes the multidimensional advantage of Muse immediately legible vs. Git's binary file-level conflicts.

Also add: - Per-dimension colored dots on each DAG node (5-dot ring) - Colored dimension pills in the operation log for each commit event - Dimension breakdown in the node hover tooltip - Active column highlight in the dimension matrix synced to playback - Conflict callout: "only 1 of 5 dimensions conflicted"

Fix JS SyntaxError: literal newline bytes in join/split string literals replaced with proper \\n escape sequences (surviving regeneration).