feat: add pitch-deck service to core infrastructure

Migrated pitch-deck from breakpilot-pwa to breakpilot-core.
Container: bp-core-pitch-deck on port 3012.

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

pitch-deck/components/ParticleBackground.tsx

@@ -0,0 +1,83 @@
+'use client'
+
+import { useEffect, useRef } from 'react'
+
+interface Particle {
+  x: number
+  y: number
+  size: number
+  speed: number
+  opacity: number
+}
+
+export default function ParticleBackground() {
+  const canvasRef = useRef<HTMLCanvasElement>(null)
+  const particlesRef = useRef<Particle[]>([])
+  const frameRef = useRef<number>(0)
+
+  useEffect(() => {
+    const canvas = canvasRef.current
+    if (!canvas) return
+
+    const ctx = canvas.getContext('2d')
+    if (!ctx) return
+
+    function resize() {
+      canvas!.width = window.innerWidth
+      canvas!.height = window.innerHeight
+    }
+
+    function initParticles() {
+      const count = Math.min(150, Math.floor((window.innerWidth * window.innerHeight) / 8000))
+      particlesRef.current = Array.from({ length: count }, () => ({
+        x: Math.random() * canvas!.width,
+        y: Math.random() * canvas!.height,
+        size: Math.random() * 1.5 + 0.5,
+        speed: Math.random() * 0.3 + 0.1,
+        opacity: Math.random() * 0.5 + 0.1,
+      }))
+    }
+
+    function animate() {
+      if (!ctx || !canvas) return
+      ctx.clearRect(0, 0, canvas.width, canvas.height)
+
+      for (const p of particlesRef.current) {
+        p.y -= p.speed
+        if (p.y < -10) {
+          p.y = canvas.height + 10
+          p.x = Math.random() * canvas.width
+        }
+
+        ctx.beginPath()
+        ctx.arc(p.x, p.y, p.size, 0, Math.PI * 2)
+        ctx.fillStyle = `rgba(255, 255, 255, ${p.opacity})`
+        ctx.fill()
+      }
+
+      frameRef.current = requestAnimationFrame(animate)
+    }
+
+    resize()
+    initParticles()
+    animate()
+
+    window.addEventListener('resize', () => {
+      resize()
+      initParticles()
+    })
+
+    return () => {
+      cancelAnimationFrame(frameRef.current)
+      window.removeEventListener('resize', resize)
+    }
+  }, [])
+
+  return (
+    <canvas
+      ref={canvasRef}
+      className="fixed inset-0 pointer-events-none z-0"
+      style={{ opacity: 0.6 }}
+    />
+  )
+}