feat: add pydantic, pytest, and optional web dependencies

Add pydantic>=2.0 to main dependencies for typed models.
Add [dev] optional deps (pytest, pytest-mock) for testing.
Add [web] optional deps (fastapi, uvicorn, websockets) for Phase 2.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

pyproject.toml

@@ -11,9 +11,14 @@ requires-python = ">=3.11"
 license = {text = "MIT"}
 dependencies = [
     "httpx>=0.27",
+    "pydantic>=2.0",
     "pyyaml>=6.0",
 ]
 
+[project.optional-dependencies]
+dev = ["pytest>=7.0", "pytest-mock>=3.0"]
+web = ["fastapi>=0.100", "uvicorn>=0.20", "websockets>=11.0"]
+
 
 [project.scripts]
 meeting-room = "meeting_room.cli:main"

requirements.txt

@@ -1,2 +1,3 @@
 httpx>=0.27
-pyyaml>=6.0
+pydantic>=2.0
+pyyaml>=6.0