Chore: Stop tracking files based on .gitignore update.

Untracked files matching the following rules:
- Rule "!.vscode/launch.json": 1 file

.gitignore

@@ -148,3 +148,5 @@ dmypy.json
 # Temporary files
 *.swp
 *~
+_dist/*
+_build/*

pyhasher/_version.py

@@ -0,0 +1,74 @@
+# -*- coding: utf-8 -*-
+# File generated by PyInstaller GUI Wrapper. DO NOT EDIT MANUALLY.
+# Contains build-time information scraped from Git (if available)
+# and a helper function to format version strings.
+
+import re
+
+# --- Version Data (Generated) ---
+__version__ = "v.0.0.0.1-0-gf0149af-dirty"
+GIT_COMMIT_HASH = "f0149af3b3d61c9959a5c14fbd2b8105ef333364"
+GIT_BRANCH = "master"
+BUILD_TIMESTAMP = "2025-08-25T06:19:22.500895+00:00"
+IS_GIT_REPO = True
+
+# --- Default Values (for comparison or fallback) ---
+DEFAULT_VERSION = "0.0.0+unknown"
+DEFAULT_COMMIT = "Unknown"
+DEFAULT_BRANCH = "Unknown"
+
+# --- Helper Function ---
+def get_version_string(format_string=None):
+    """
+    Returns a formatted string based on the build version information.
+
+    Args:
+        format_string (str, optional): A format string using placeholders.
+            Defaults to "{version} ({branch}/{commit_short})" if None.
+            Placeholders:
+                {{version}}: Full version string (e.g., 'v1.0.0-5-gabcdef-dirty')
+                {{tag}}: Clean tag part if exists (e.g., 'v1.0.0'), else DEFAULT_VERSION.
+                {{commit}}: Full Git commit hash.
+                {{commit_short}}: Short Git commit hash (7 chars).
+                {{branch}}: Git branch name.
+                {{dirty}}: '-dirty' if the repo was dirty, empty otherwise.
+                {{timestamp}}: Full build timestamp (ISO 8601 UTC).
+                {{timestamp_short}}: Build date only (YYYY-MM-DD).
+                {{is_git}}: 'Git' if IS_GIT_REPO is True, 'Unknown' otherwise.
+
+    Returns:
+        str: The formatted version string, or an error message if formatting fails.
+    """
+    if format_string is None:
+        format_string = "{version} ({branch}/{commit_short})"  # Default format
+
+    replacements = {}
+    try:
+        replacements['version'] = __version__ if __version__ else DEFAULT_VERSION
+        replacements['commit'] = GIT_COMMIT_HASH if GIT_COMMIT_HASH else DEFAULT_COMMIT
+        replacements['commit_short'] = GIT_COMMIT_HASH[:7] if GIT_COMMIT_HASH and len(GIT_COMMIT_HASH) >= 7 else DEFAULT_COMMIT
+        replacements['branch'] = GIT_BRANCH if GIT_BRANCH else DEFAULT_BRANCH
+        replacements['timestamp'] = BUILD_TIMESTAMP if BUILD_TIMESTAMP else "Unknown"
+        replacements['timestamp_short'] = BUILD_TIMESTAMP.split('T')[0] if BUILD_TIMESTAMP and 'T' in BUILD_TIMESTAMP else "Unknown"
+        replacements['is_git'] = "Git" if IS_GIT_REPO else "Unknown"
+        replacements['dirty'] = "-dirty" if __version__ and __version__.endswith('-dirty') else ""
+
+        tag = DEFAULT_VERSION
+        if __version__ and IS_GIT_REPO:
+            match = re.match(r'^(v?([0-9]+(?:\.[0-9]+)*))', __version__)
+            if match:
+                tag = match.group(1)
+        replacements['tag'] = tag
+
+        output_string = format_string
+        for placeholder, value in replacements.items():
+             pattern = re.compile(r'{{\s*' + re.escape(placeholder) + r'\s*}}')
+             output_string = pattern.sub(str(value), output_string)
+
+        if re.search(r'{\s*\w+\s*}', output_string):
+             pass # Or log a warning: print(f"Warning: Unreplaced placeholders found: {output_string}")
+
+        return output_string
+
+    except Exception as e:
+        return f"[Formatting Error: {e}]"

pyhasher/gui/gui.py

@@ -21,6 +21,26 @@ HASH_DISPLAY_ORDER = (
     "BLAKE2b",
 )
 
+# --- Import Version Info FOR THE WRAPPER ITSELF ---
+try:
+    # Use absolute import based on package name
+    from pyhasher import _version as wrapper_version
+
+    WRAPPER_APP_VERSION_STRING = f"{wrapper_version.__version__} ({wrapper_version.GIT_BRANCH}/{wrapper_version.GIT_COMMIT_HASH[:7]})"
+    WRAPPER_BUILD_INFO = f"Wrapper Built: {wrapper_version.BUILD_TIMESTAMP}"
+except ImportError:
+    # This might happen if you run the wrapper directly from source
+    # without generating its _version.py first (if you use that approach for the wrapper itself)
+    WRAPPER_APP_VERSION_STRING = "(Dev Wrapper)"
+    WRAPPER_BUILD_INFO = "Wrapper build time unknown"
+# --- End Import Version Info ---
+
+# --- Constants for Version Generation ---
+DEFAULT_VERSION = "0.0.0+unknown"
+DEFAULT_COMMIT = "Unknown"
+DEFAULT_BRANCH = "Unknown"
+# --- End Constants ---
+
 class PyHasherApp:
     """
     The main GUI application class for PyHasher.
@@ -34,7 +54,10 @@ class PyHasherApp:
             root_window: The main tkinter window.
         """
         self.root = root_window
-        self.root.title("PyHasher")
+        self.root.title(
+                f"PyHasher - {WRAPPER_APP_VERSION_STRING}"
+            )
+
         self.root.geometry("1024x400")  # Increased height for more hashes
         self.file_path = tk.StringVar()