feat: initial corvid — standalone ticket service extracted from homelab-dashboard

Extracts the ticket/attachment system into a reusable pip-installable package.
Centralises homelab MCP server (tickets, attachments, system logs) here.

- corvid package: models, router (make_router factory), config, standalone main
- Alembic migration chain for fresh standalone deployments
- Docker Compose for standalone deployment (port 8090)
- mcp_server.py: moved from homelab-dashboard, CORVID_REPO_PATH configurable

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

pyproject.toml

@@ -0,0 +1,25 @@
+[build-system]
+requires = ["setuptools>=68"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "corvid"
+version = "0.1.0"
+description = "Standalone ticket management service for AI agents"
+requires-python = ">=3.12"
+dependencies = [
+    "fastapi>=0.115",
+    "sqlalchemy[asyncio]>=2.0",
+    "asyncpg>=0.30",
+    "uvicorn[standard]>=0.32",
+    "alembic>=1.14",
+    "pydantic>=2.0",
+]
+
+[project.optional-dependencies]
+mcp = ["mcp[cli]>=1.0", "httpx>=0.28"]
+dev = ["pytest>=8.0", "pytest-asyncio>=0.24", "aiosqlite>=0.20"]
+
+[tool.setuptools.packages.find]
+where = ["."]
+include = ["corvid*"]