sap-drawio: add 'Sketch to SAP BTP' custom-store app (FastAPI+React, single-port, seed-on-first-run SQLite, exposed via auto-SSO)

2026-07-22 09:01:10 -07:00
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+# Sketch to SAP BTP
+
+Turn a rough architecture idea into a polished **SAP BTP architecture diagram**
+in seconds. Feed it either a hand-drawn/whiteboard **sketch (image)** or a
+**Mermaid diagram**, and it produces a clean draw.io XML diagram (plus an
+inline SVG preview) styled in SAP's official BTP solution-diagram visual
+language — complete with an LLM-generated architecture review calling out
+gaps, risks, and suggestions.
+
+## Two ways in
+
+- **Image sketch** — upload a photo or screenshot of a whiteboard sketch; the
+  vision model reads the shapes, labels, and connections and maps them to the
+  matching SAP BTP services/icons.
+- **Mermaid** — paste a Mermaid diagram and get the same SAP BTP-styled
+  draw.io output without needing to draw anything by hand.
+
+Every conversion is saved to a local history so past diagrams and their
+review notes can be revisited later, exported again, or refined further.
+
+## Access note
+
+This app has **no built-in authentication** of its own — access control is
+handled at the edge (Authentik SSO via the homeserver's forward-auth gate).
+Anyone who reaches the app through the gate can drive the full pipeline.
+
+## Dependencies
+
+Requires a reachable Ollama-compatible LLM endpoint (configured via the
+"Ollama URL" field) with the configured vision and validator models
+available. An optional Brandfetch API key enables looking up third-party
+brand logos for non-SAP components in a diagram.