Add file uploader for .eval files

app.py

@@ -718,17 +718,32 @@ def main() -> None:
         st.title("🔴 github_red")
         st.subheader("Trajectory Viewer")
 
-        log_files = sorted(glob.glob(str(LOGS_DIR / "*.eval")), reverse=True)
-        if not log_files:
-            st.error(f"No .eval files found in:\n`{LOGS_DIR}`")
-            return
-
-        selected = st.selectbox(
-            "Run log",
-            log_files,
-            format_func=lambda p: Path(p).stem[:50],
+        # File uploader takes priority; fall back to local disk files
+        uploaded = st.file_uploader(
+            "Upload .eval file",
+            type=["eval"],
+            accept_multiple_files=False,
+            help="Upload an .eval log produced by inspect-ai",
         )
 
+        eval_source = None  # will be a file-like or path string
+
+        if uploaded is not None:
+            eval_source = uploaded
+        else:
+            log_files = sorted(glob.glob(str(LOGS_DIR / "*.eval")), reverse=True)
+            if log_files:
+                selected_path = st.selectbox(
+                    "Or pick a local run log",
+                    log_files,
+                    format_func=lambda p: Path(p).stem[:50],
+                )
+                eval_source = selected_path
+
+        if eval_source is None:
+            st.info("Upload an .eval file above to get started.")
+            return
+
         st.markdown("---")
         st.markdown("**Legend**")
         for role, color in ROLE_COLOR.items():
@@ -739,12 +754,9 @@ def main() -> None:
                 unsafe_allow_html=True,
             )
 
-    if not selected:
-        return
-
     # ── Load ──────────────────────────────────────────────────────────
     try:
-        with zipfile.ZipFile(selected) as z:
+        with zipfile.ZipFile(eval_source) as z:
             sample_files = [n for n in z.namelist() if n.startswith("samples/")]
             if not sample_files:
                 st.error("No sample files found in this eval log.")