refs #739: preserve Smilegate changes before repository layout migration

poc4_active_source_20260714/apps/smilegate_demo/main.py

@@ -0,0 +1,27 @@
+"""Minimal Smilegate Streamlit demo entrypoint.
+
+This entrypoint intentionally wires only the blank presentation shell. Feature
+modules such as authentication, MCP querying, and history are added separately
+after each review.
+"""
+
+from __future__ import annotations
+
+import sys
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parents[2]
+if str(ROOT) not in sys.path:
+    sys.path.insert(0, str(ROOT))
+
+import streamlit as st
+
+from src.smilegate_demo.ui.shell import render_blank_shell
+
+
+def main() -> None:
+    render_blank_shell(st)
+
+
+if __name__ == "__main__":
+    main()

poc4_active_source_20260714/src/smilegate_demo/__init__.py

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+"""Smilegate demo modules.
+
+The portal is assembled from small modules so each feature can be reviewed and
+released independently.
+"""

poc4_active_source_20260714/src/smilegate_demo/ui/__init__.py

@@ -0,0 +1 @@
+"""Presentation modules for the Smilegate demo."""

poc4_active_source_20260714/src/smilegate_demo/ui/shell.py

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+"""Blank presentation shell.
+
+No authentication, data access, MCP call, persistence, or customer text belongs
+in this module. It exists only to prove the minimal Streamlit runtime path.
+"""
+
+from __future__ import annotations
+
+from typing import Any
+
+
+def render_blank_shell(st: Any) -> None:
+    """Render the intentionally empty first review screen."""
+    st.set_page_config(page_title="Smilegate Demo", layout="wide")
+    st.markdown(
+        """
+        <style>
+          [data-testid="stHeader"],
+          [data-testid="stToolbar"],
+          #MainMenu,
+          footer { display: none; }
+          [data-testid="stAppViewContainer"],
+          .stApp { background: #ffffff; }
+          .block-container { padding: 0; max-width: none; }
+        </style>
+        """,
+        unsafe_allow_html=True,
+    )