Folder priority + path penalty: match folder segments only, not filenames

Both _folder_priority and _path_penalty were scanning the entire path
string including the basename. A file named 'mytrashed_pic.jpg' in
/photos/MobileBackup/ would falsely match the 'trash' token.

Now only directory segments are checked; filename never influences keeper
selection beyond its actual path location.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

app/scanner.py

@@ -424,16 +424,22 @@ def _load_folder_priority() -> tuple[tuple[tuple[str, int], ...], int]:
 
 
 def _folder_priority(path: str) -> int:
-    """Return the worst (highest) priority bucket matching this path, or default."""
-    if not path:
-        entries, default_bucket = _load_folder_priority()
-        return default_bucket
+    """Return the worst (highest) priority bucket matching any DIRECTORY segment
+    of this path, or default. Filename basename is intentionally excluded —
+    only folder names influence priority."""
     entries, default_bucket = _load_folder_priority()
-    low = path.lower()
+    if not path:
+        return default_bucket
+    # Split on /, drop empty segments, drop the last (filename basename).
+    segments = [s.lower() for s in path.split("/") if s]
+    if len(segments) <= 1:
+        return default_bucket  # no parent folder
+    dir_segments = segments[:-1]
     worst: int | None = None
-    for token, prio in entries:
-        if token in low and (worst is None or prio > worst):
-            worst = prio
+    for seg in dir_segments:
+        for token, prio in entries:
+            if token in seg and (worst is None or prio > worst):
+                worst = prio
     return worst if worst is not None else default_bucket
 
 
@@ -446,26 +452,33 @@ _DUP_FOLDER_TOKENS = (
 
 
 def _path_penalty(path: str) -> int:
-    """Higher = worse keeper candidate. Penalises paths that look like copies/backups."""
+    """Higher = worse keeper candidate. Penalises FOLDERS (not filenames) that
+    look like copies/backups, plus repeated segments and very deep paths."""
     if not path:
         return 0
     segments = [s for s in path.split("/") if s]
+    if not segments:
+        return 0
+    # Folder segments only — exclude filename basename
+    dir_segments = segments[:-1]
     score = 0
-    for seg in segments:
+    for seg in dir_segments:
         low = seg.lower()
         for tok in _DUP_FOLDER_TOKENS:
-            if tok in low.split() or tok == low or f"_{tok}" in low or f"{tok}_" in low or low.startswith(tok) or low.endswith(tok):
+            if (tok in low.split() or tok == low
+                    or f"_{tok}" in low or f"{tok}_" in low
+                    or low.startswith(tok) or low.endswith(tok)):
                 score += 100
                 break
-        # Repeated segments like "Desktop/Desktop/Files" suggest a nested backup
+    # Repeated folder segments like "Desktop/Desktop/Files" suggest a nested backup
     seen: set[str] = set()
-    for seg in segments:
+    for seg in dir_segments:
         low = seg.lower()
         if low in seen:
             score += 30
         seen.add(low)
     # Slight penalty for very deep paths (originals tend to live shallower)
-    score += max(0, len(segments) - 6) * 5
+    score += max(0, len(dir_segments) - 6) * 5
     return score
 
 

debian/build-deb.sh

@@ -13,7 +13,7 @@ BUILD_DIR="$REPO_ROOT/build/deb"
 
 # ── Config ────────────────────────────────────────────────────────────────────
 PKG_NAME="dupfinder"
-PKG_VERSION="1.0.10"
+PKG_VERSION="1.0.11"
 PKG_ARCH="amd64"
 DEB_FILE="${PKG_NAME}_${PKG_VERSION}_${PKG_ARCH}.deb"