chore: initial commit — existing single-user document scanner codebase

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

.env.example

@@ -0,0 +1,6 @@
+# Copy to .env and fill in as needed.
+# Settings are primarily managed through the in-app Settings UI.
+# These are NOT required — the app defaults to LM Studio with no API keys.
+
+ANTHROPIC_API_KEY=
+OPENAI_API_KEY=