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.

.gitea/workflows/prod-docker-images.yml

@@ -0,0 +1,50 @@
+name: Build and Push Docker Container
+
+on:
+  push:
+    branches:
+      - main
+    tags:
+      - "v*"
+  workflow_dispatch:
+
+env:
+  IMAGE_NAME: obsidian-api
+  OBSIDIAN_VERSION: "1.12.7"
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Rewrite SSH submodule URLs to HTTPS for CI
+        run: |
+          git config --global url."https://x-token:${{ secrets.ACTION_ACCESS_TOKEN }}@git.yiprawr.dev/".insteadOf "git@git.yiprawr.dev:"
+
+      - name: Checkout repository
+        uses: actions/checkout@v6
+        with:
+          token: "${{ secrets.ACTION_ACCESS_TOKEN }}"
+          submodules: recursive
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v4
+
+      - name: Login to Docker registry
+        uses: docker/login-action@v4
+        with:
+          registry: ${{ vars.DOCKER_REGISTRY_URL }}
+          username: ${{ secrets.DOCKER_REGISTRY_USERNAME }}
+          password: ${{ secrets.ACTION_ACCESS_TOKEN }}
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v7
+        with:
+          context: .
+          file: ./Dockerfile
+          push: true
+          platforms: linux/amd64
+          build-args: |
+            OBSIDIAN_VERSION=${{ env.OBSIDIAN_VERSION }}
+          tags: |
+            ${{ vars.DOCKER_REGISTRY_URL }}/daniel156161/${{ env.IMAGE_NAME }}:latest