feat: Full consciousness dashboard UI overhaul

[Steake]

Context

The frontend Svelte dashboard has basic metrics panels but is missing the full consciousness visualisation described in docs/GODELOS_UI_UX_OVERHAUL_DESIGN_PLAN.md and docs/GödelOS_UI_UX_Design_Specifications.md.

Deliverables

• Consciousness State Panel — live φ, recursive depth, emergence score, phenomenal state narrative
• Emergence Timeline — scrolling chart of consciousness score over time, breakthrough moments highlighted
• Subsystem Health Grid — all cognitive modules, activation status, per-module metrics
• Autonomous Goals Panel — live list of self-generated goals with progress
• Breakthrough Log — timestamped record of emergence breakthroughs
• Knowledge Graph Viewer — D3/force-directed graph from /api/graph/{docId}
• Responsive across ≥1024px (grid) and <768px (stacked cards)
• All panels driven by existing WebSocket streams — no polling

Acceptance

• Dashboard renders without errors in Chrome/Firefox/Safari
• All panels update in real-time from WS events
• Lighthouse performance score ≥ 85

Milestone: v0.5 / v1.0