feat: real-time live data integration

- lib/live-data.ts: Shared TypeScript client for blackroad-live-data Worker
- components/live-stats.tsx: LiveStatsBar, RecentRepos, AgentStatusGrid components
- app/page.tsx: Import LiveStatsBar in main page header

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

app/api/settings/route.ts

@@ -0,0 +1,45 @@
+import { NextResponse } from 'next/server'
+import { readFileSync, writeFileSync, mkdirSync } from 'fs'
+
+export const runtime = 'nodejs'
+export const dynamic = 'force-dynamic'
+
+const SETTINGS_PATH = '/Users/alexa/.blackroad/settings.json'
+
+const DEFAULTS = {
+  gatewayUrl: 'http://127.0.0.1:8787',
+  ollamaUrl: 'http://localhost:11434',
+  piNodes: [
+    { name: 'aria64', ip: '192.168.4.38', role: 'primary', capacity: 22500 },
+    { name: 'blackroad-pi', ip: '192.168.4.64', role: 'secondary', capacity: 7500 },
+    { name: 'alice', ip: '192.168.4.49', role: 'mesh', capacity: 5000 },
+    { name: 'cecilia', ip: '192.168.4.89', role: 'ai', capacity: 5000 },
+  ],
+  tunnelId: '8ae67ab0-71fb-4461-befc-a91302369a7e',
+  brand: { primary: '#FF1D6C', secondary: '#2979FF', accent: '#F5A623' },
+}
+
+function load() {
+  try { return { ...DEFAULTS, ...JSON.parse(readFileSync(SETTINGS_PATH, 'utf8')) } }
+  catch { return DEFAULTS }
+}
+
+export async function GET() {
+  const settings = load()
+  // Mask secrets
+  const safe = { ...settings, cloudflareToken: settings.cloudflareToken ? '***' : '', vercelToken: settings.vercelToken ? '***' : '' }
+  return NextResponse.json(safe)
+}
+
+export async function POST(req: Request) {
+  const updates = await req.json()
+  const current = load()
+  const merged = { ...current, ...updates, updatedAt: new Date().toISOString() }
+  try {
+    mkdirSync('/Users/alexa/.blackroad', { recursive: true })
+    writeFileSync(SETTINGS_PATH, JSON.stringify(merged, null, 2))
+    return NextResponse.json({ ok: true, saved: Object.keys(updates) })
+  } catch (e: any) {
+    return NextResponse.json({ error: e.message }, { status: 500 })
+  }
+}