Fix the problem of re-analyzing previous file when a new file is uploaded

state.py

@@ -409,13 +409,28 @@ def run_analysis_loop(file_names, file_paths_dict, pipeline,
                       enable_denoise, early_cleanup,
                       gain_window, minimum_gain, maximum_gain,
                       df_model, df_state, atten_lim_db):
-    """Process every file in file_names and populate session state."""
+    """Process only new (not yet analyzed) files and populate session state."""
     import time
     import utils as _utils
     start_time = time.time()
-    totalFiles = len(file_names)
 
-    for i, fname in enumerate(file_names):
+    # Only process files that haven't been analyzed yet
+    pending = [
+        fname for fname in file_names
+        if not (
+            fname in st.session_state.results
+            and len(st.session_state.results[fname]) == 2
+        )
+    ]
+
+    if not pending:
+        st.info("All files have already been analyzed.")
+        st.session_state.analyzeAllToggle = False
+        return
+
+    totalFiles = len(pending)
+
+    for i, fname in enumerate(pending):
         fpath = file_paths_dict.get(fname, "")
         ext   = fpath.lower()
 
@@ -440,8 +455,10 @@ def run_analysis_loop(file_names, file_paths_dict, pipeline,
         with st.spinner(f"Analyzing {i+1}/{totalFiles}"):
             analyze(fname)
 
-    st.success(f"Analyzed {totalFiles} file(s) in {time.time() - start_time:.1f}s")
+    st.success(f"Analyzed {totalFiles} new file(s) in {time.time() - start_time:.1f}s")
     st.session_state.analyzeAllToggle = False
+    # Rotate uploader key to clear the file uploader widget
+    st.session_state.uploader_key = st.session_state.get("uploader_key", 0) + 1
 
 
 def build_table_df(displayDF):