Initial commit

Photo-based book cataloger with AI identification.
Room → Cabinet → Shelf → Book hierarchy; FastAPI + SQLite backend;
vanilla JS SPA; OpenAI-compatible plugin system for boundary
detection, text recognition, and archive search.

config/credentials.default.yaml

@@ -0,0 +1,9 @@
+# API credentials — connection endpoints only (no model, no prompt).
+# Override api_key in credentials.user.yaml.
+credentials:
+  openrouter:
+    base_url: "https://openrouter.ai/api/v1"
+    api_key: "sk-or-..."
+  # openai:
+  #   base_url: "https://api.openai.com/v1"
+  #   api_key: "sk-..."