feat: add Obsidian CLI API service

- Add Docker image for the official Obsidian desktop app and CLI.

- Start Obsidian headlessly with Xvfb and DBus setup.

- Expose a safe structured HTTP command API without shell execution.

- Add JWT-based vault, path, and command authorization.

- Support single-vault and multi-vault container mounts.

- Add TypeScript SDK helpers for Obsidian CLI commands.

- Add n8n community node package with Obsidian operations.

- Add docs, compose config, tests, and production image workflow.

pyproject.toml

@@ -0,0 +1,21 @@
+[project]
+name = "obsidian-api"
+version = "1.0.0"
+description = "HTTP API wrapper for running Obsidian CLI commands from n8n, SDKs, or agent harnesses."
+requires-python = ">=3.14"
+dependencies = [
+    "starlette==0.50.0",
+    "uvicorn[standard]==0.38.0",
+]
+
+[dependency-groups]
+dev = [
+    "pytest==9.0.2",
+    "httpx==0.28.1",
+]
+
+[tool.pytest.ini_options]
+pythonpath = ["."]
+
+[tool.uv]
+package = false