feat(demo): Command Palette (⌘K) + persistent status bar

[konjoinfinity]

Summary

• Status bar (fixed bottom, always visible): kairu logo + v0.23.0 badge, current tab breadcrumb that updates on every tab switch, live Eval API + Infer API health dots (green/amber/red, polled every 30s with latency display), session eval counter that ticks up on every successful evaluation
• Command Palette (⌘K / Ctrl+K): glassmorphism modal with blur backdrop, fuzzy search across all 18 tabs (icon + label + description), quick actions panel, arrow-key navigation, Enter to activate, Escape to close, animated item entry
• ⌘1-9 / Ctrl+1-9 keyboard shortcuts jump directly to tabs 1-9
• Kairu.session.recordEval() wired into the evaluate handler to maintain live eval count

Test plan

• Press ⌘K / Ctrl+K → palette opens with all 18 tabs listed
• Type "eval" → Evaluate, Log Eval, Rubric Lab filter in
• Arrow keys navigate, Enter activates the tab
• ⌘1 / Ctrl+1 jumps to Generate, ⌘9 jumps to Adversarial
• Status bar shows green dots when both API servers are up
• Status bar tab crumb updates when switching tabs
• Run an evaluation → eval counter increments from 0 → 1

https://claude.ai/code/session_018AUTq7p346dUTQ6xe5eNVK

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