Delete app/auth_gate.py

app/auth_gate.py

@@ -1,76 +0,0 @@
-"""
-Access gate for GVHD-Intel Pro: login + research-use-only acknowledgement.
-
-Credentials come from the Space secret APP_USERS, formatted as
-    user1:password1,user2:password2
-(no commas or colons inside passwords).
-
-Usage (top of app.py and of EVERY file in pages/, right after st.set_page_config):
-    from auth_gate import require_access
-    require_access()
-"""
-import os
-import datetime
-
-import streamlit as st
-
-
-def _load_users() -> dict:
-    raw = os.environ.get("APP_USERS", "")
-    return dict(u.strip().split(":", 1) for u in raw.split(",") if ":" in u)
-
-
-def require_access() -> None:
-    users = _load_users()
-
-    # ---------- Step 1: login ----------
-    if not st.session_state.get("authed"):
-        st.title("🧬 GVHD-Intel Pro — Research Access")
-        st.caption(
-            "Access is restricted to registered research users. "
-            "Credentials are issued by the study team (naveed3642003@gmail.com)."
-        )
-        with st.form("login_form"):
-            u = st.text_input("Username")
-            p = st.text_input("Password", type="password")
-            ok = st.form_submit_button("Log in")
-        if ok:
-            if users and users.get(u) == p:
-                st.session_state.authed = True
-                st.session_state.user = u
-                print(f"[ACCESS] {datetime.datetime.utcnow().isoformat()}Z user={u} login ok", flush=True)
-                st.rerun()
-            else:
-                print(f"[ACCESS] {datetime.datetime.utcnow().isoformat()}Z user={u} login FAILED", flush=True)
-                st.error("Invalid username or password.")
-        st.stop()
-
-    # ---------- Step 2: research-use acknowledgement ----------
-    if not st.session_state.get("accepted"):
-        st.title("Research Use Only")
-        st.warning(
-            "This tool is provided for research purposes only. It is **not a medical device**, "
-            "has **not been validated for clinical use**, and must **not** be used to make or change "
-            "diagnostic, donor-selection, prophylaxis or treatment decisions, or for patient counselling.\n\n"
-            "In external evaluation, acute GVHD discrimination was close to chance (AUROC ≈0.52–0.57), "
-            "chronic GVHD discrimination was modest (AUROC 0.54–0.64), and calibration drifted across cohorts. "
-            "Predicted percentages are not reliable absolute risks.\n\n"
-            "**Do not enter identifiable patient information** (names, MRNs, exact dates of birth)."
-        )
-        agree = st.checkbox("I understand and agree to use this tool for research purposes only.")
-        if st.button("Continue", disabled=not agree, type="primary"):
-            st.session_state.accepted = True
-            print(
-                f"[ACCESS] {datetime.datetime.utcnow().isoformat()}Z "
-                f"user={st.session_state.user} accepted research-use terms",
-                flush=True,
-            )
-            st.rerun()
-        st.stop()
-
-    # ---------- Logged in: show user + logout ----------
-    with st.sidebar:
-        st.caption(f"Signed in as **{st.session_state.user}**")
-        if st.button("Log out", key="logout_btn"):
-            st.session_state.clear()
-            st.rerun()