Add web topology viewer with hot path visualization

- FastAPI backend (server.py) with REST API + WebSocket for event streaming
- SVG-based topology viewer (index.html) with SIP/CUBE/PE drill-down views
- Event logging infrastructure (event_log.py) generating events from real
  probe cases (H2D/D2H/PE-DMA) and bench workloads (QKV GEMM single/multi-PE)
- Timeline replay engine with play/pause, speed control, and scrubbing
- Workload selector dropdown grouped by category (Probe/Bench)
- CLI entry points: kernbench web, ./kernbench wrapper scripts

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

pyproject.toml

@@ -6,11 +6,15 @@ build-backend = "setuptools.build_meta"
 name = "kernbench"
 version = "0.1.0"
 requires-python = ">=3.10"
-dependencies = ["pytest", "simpy", "pyyaml"]
+dependencies = ["pytest", "simpy", "pyyaml", "fastapi>=0.110", "uvicorn[standard]>=0.29", "websockets>=12"]
 
 [project.scripts]
 kernbench = "kernbench.cli.main:main"
 
+[tool.setuptools.packages.find]
+where = ["src", "."]
+include = ["kernbench*", "benches*"]
+
 [project.optional-dependencies]
 dev = [
   "pytest>=7",