init: first commit to Gitea mirror, update README with Docker quick start and new repo URL

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

render.yaml

@@ -0,0 +1,21 @@
+services:
+  - type: web
+    name: ombre-brain
+    env: python
+    region: oregon
+    plan: free
+    buildCommand: pip install -r requirements.txt
+    startCommand: python server.py
+    envVars:
+      - key: OMBRE_TRANSPORT
+        value: streamable-http
+      - key: OMBRE_API_KEY
+        sync: false          # Set in Render dashboard > Environment (any OpenAI-compatible key)
+      - key: OMBRE_BASE_URL
+        sync: false          # e.g. https://api.deepseek.com/v1 or https://api.siliconflow.cn/v1
+      - key: OMBRE_BUCKETS_DIR
+        value: /opt/render/project/src/buckets
+    disk:
+      name: ombre-buckets
+      mountPath: /opt/render/project/src/buckets
+      sizeGB: 1