init: surfaces-bot — Telegram & Matrix prototype

- Surface Protocol: unified IncomingMessage/OutgoingUI/ChatContext
- Telegram: Forum Topics (group + topics per chat)
- Matrix: Space + rooms per chat
- MockPlatformClient with PlatformClient Protocol
- docs: surface-protocol, telegram/matrix specs, api-contract, claude-code-guide
- project scaffold: src/, tests/, pyproject.toml

Co-Authored-By: Claude Sonnet 4-6 <noreply@anthropic.com>

pyproject.toml

@@ -0,0 +1,38 @@
+[build-system]
+requires = ["setuptools>=68", "wheel"]
+build-backend = "setuptools.backends.legacy:build"
+
+[project]
+name = "surfaces-bot"
+version = "0.1.0"
+description = "Lambda Lab 3.0 — Telegram и Matrix боты"
+requires-python = ">=3.11"
+
+dependencies = [
+    "aiogram>=3.4,<4",
+    "matrix-nio>=0.21",
+    "pydantic>=2.5",
+    "structlog>=24.1",
+    "python-dotenv>=1.0",
+    "httpx>=0.27",
+]
+
+[project.optional-dependencies]
+dev = [
+    "pytest>=8.0",
+    "pytest-asyncio>=0.23",
+    "pytest-cov>=4.1",
+    "ruff>=0.3",
+    "mypy>=1.8",
+]
+
+[tool.pytest.ini_options]
+asyncio_mode = "auto"
+testpaths = ["tests"]
+
+[tool.ruff]
+line-length = 100
+target-version = "py311"
+
+[tool.ruff.lint]
+select = ["E", "F", "I", "UP", "B"]