rename: recurse subdirs, move already-renamed files to correct folder

When races_dir is set:
- os.walk scans all subdirectories of the source
- already-renamed files (both tokens present) are also moved if not in
  the right races/<track>/<session>/ folder
- files already in the correct place are skipped with 'already in place'

GUI remembers last rename source folder separately from other modes.

telemetry/gui.py

@@ -196,9 +196,11 @@ class _App:
             self._log_queue.put(None)
 
     def _on_rename(self) -> None:
-        d = filedialog.askdirectory(title='Select folder to rename', initialdir=_RACES_DIR)
+        init = self._last_dir.get('rename', os.path.expanduser('~'))
+        d = filedialog.askdirectory(title='Select folder with CSV files', initialdir=init)
         if not d:
             return
+        self._last_dir['rename'] = d
         self._set_busy(True)
         threading.Thread(target=self._worker_rename, args=(d,), daemon=True).start()
 
@@ -209,7 +211,8 @@ class _App:
                 self._push('No CSV files found')
             for r in results:
                 if r.status == 'renamed':
-                    self._push(f'renamed: {r.old} -> {r.new}')
+                    new_display = os.path.relpath(r.new, _RACES_DIR) if r.new and r.new.startswith(_RACES_DIR) else r.new
+                    self._push(f'renamed: {r.old} -> {new_display}')
                 elif r.status == 'skipped':
                     self._push(f'skipped: {r.old} ({r.detail})')
                 else:

telemetry/rename.py

@@ -115,9 +115,15 @@ def rename_unprocessed(targets: list[str], races_dir: str | None = None) -> list
     for t in targets:
         t = os.path.abspath(t)
         if os.path.isdir(t):
-            for name in os.listdir(t):
-                if name.lower().endswith('.csv'):
-                    paths.append(os.path.join(t, name))
+            if races_dir is not None:
+                for root, _, files in os.walk(t):
+                    for fname in sorted(files):
+                        if fname.lower().endswith('.csv'):
+                            paths.append(os.path.join(root, fname))
+            else:
+                for fname in os.listdir(t):
+                    if fname.lower().endswith('.csv'):
+                        paths.append(os.path.join(t, fname))
         else:
             paths.append(t)
 
@@ -131,9 +137,22 @@ def rename_unprocessed(targets: list[str], races_dir: str | None = None) -> list
             results.append(RenameResult(name, None, 'error', 'not a CSV file'))
             continue
         stem = os.path.splitext(name)[0]
+
+        if races_dir is None:
             if _is_processed(stem):
                 results.append(RenameResult(name, None, 'skipped', 'already processed'))
                 continue
+            try:
+                lap, session_type, _ = read_metadata(p)
+            except Exception as e:
+                results.append(RenameResult(name, None, 'error', str(e)))
+                continue
+            if not session_type:
+                results.append(RenameResult(name, None, 'error', 'session type not found in CSV'))
+                continue
+            new_name = insert_tokens(name, session_type, lap)
+            dest = os.path.join(os.path.dirname(p), new_name)
+        else:
             try:
                 lap, session_type, track_name = read_metadata(p)
             except Exception as e:
@@ -142,14 +161,15 @@ def rename_unprocessed(targets: list[str], races_dir: str | None = None) -> list
             if not session_type:
                 results.append(RenameResult(name, None, 'error', 'session type not found in CSV'))
                 continue
-        new_name = insert_tokens(name, session_type, lap)
-        if races_dir is not None:
+            new_name = name if _is_processed(stem) else insert_tokens(name, session_type, lap)
             dest_dir = os.path.join(races_dir, _safe_dirname(track_name), _session_folder(session_type))
-            os.makedirs(dest_dir, exist_ok=True)
-        else:
-            dest_dir = os.path.dirname(p)
             dest = os.path.join(dest_dir, new_name)
-        if os.path.exists(dest):
+            if os.path.abspath(p) == os.path.abspath(dest):
+                results.append(RenameResult(name, None, 'skipped', 'already in place'))
+                continue
+            os.makedirs(dest_dir, exist_ok=True)
+
+        if os.path.exists(dest) and os.path.abspath(dest) != os.path.abspath(p):
             results.append(RenameResult(name, dest, 'error', 'target exists'))
             continue
         try:

tests/test_rename.py

@@ -139,3 +139,40 @@ def test_rename_unprocessed_moves_to_races_dir(tmp_path, sample_path):
     assert r.new.startswith(races_dir)
     assert 'Practice' in r.new
     assert not os.path.exists(src)
+
+
+def test_rename_unprocessed_moves_already_renamed(tmp_path, sample_path):
+    """Already-renamed file in wrong folder gets moved to correct folder."""
+    src = str(tmp_path / "zandvoort_P1_L7_74.074_ferrari.csv")
+    shutil.copy(sample_path, src)
+    races_dir = str(tmp_path / 'races')
+    results = rename_unprocessed([src], races_dir=races_dir)
+    assert len(results) == 1
+    r = results[0]
+    assert r.status == 'renamed'
+    assert 'Practice' in r.new
+    assert os.path.exists(r.new)
+    assert not os.path.exists(src)
+
+
+def test_rename_unprocessed_skips_already_in_place(tmp_path, sample_path):
+    """File already in correct folder is skipped on second run."""
+    src = str(tmp_path / "zandvoort_74.074_ferrari.csv")
+    shutil.copy(sample_path, src)
+    races_dir = str(tmp_path / 'races')
+    rename_unprocessed([src], races_dir=races_dir)
+    results = rename_unprocessed([races_dir], races_dir=races_dir)
+    assert all(r.status == 'skipped' for r in results)
+
+
+def test_rename_unprocessed_walks_subdirs(tmp_path, sample_path):
+    """With races_dir, scans subdirectories recursively."""
+    sub = tmp_path / 'sub' / 'nested'
+    sub.mkdir(parents=True)
+    src = str(sub / "zandvoort_74.074_ferrari.csv")
+    shutil.copy(sample_path, src)
+    races_dir = str(tmp_path / 'races')
+    results = rename_unprocessed([str(tmp_path)], races_dir=races_dir)
+    assert len(results) == 1
+    assert results[0].status == 'renamed'
+    assert 'Practice' in results[0].new