Finalize documentation: Simplified layout and GPLv3 License

Update default alpha value
Implement grouping score, customizable export weights, and fix color selection bug
2026-03-23 21:28:14 +01:00 · 2026-03-23 21:03:49 +01:00 · 2026-03-23 21:00:16 +01:00 · 2026-03-22 20:09:05 +01:00 · 2026-03-22 17:42:26 +01:00 · 2026-03-13 18:42:42 +01:00
58 changed files with 2240 additions and 2144 deletions
--- a/.gitignore
+++ b/.gitignore
@ -156,3 +156,6 @@ uv/
 *.merge_file_*
 .git/modules/
 .git/worktrees/
+
+# ICRA specific
+analyses/
--- a/676
+++ b/676
@ -0,0 +1,676 @@
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+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT
+WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+PARTICULAR PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE
+OF THE PROGRAM IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU
+ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING
+ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF
+THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO
+LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY
+OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF
+THE POSSIBILITY OF SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the absence of warranty; and each file should have at least the
+"copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications
+with the library.  If this is what you want to do, use the GNU Lesser
+General Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.
--- a/README.md
+++ b/README.md
@ -1,24 +1,63 @@
 <div style="display:flex; gap:16px; align-items:center;">
  <img src="app/assets/logo.png" alt="ICRA" width="140"/>
  <div>
-    <strong>Interactive Color Range Analyzer</strong> is being reimagined with a <em>PySide6</em> user interface.<br/>
-    This branch focuses on building a native desktop shell with modern window controls before porting the colour-analysis features.
+    <strong>Interactive Color Range Analyzer (ICRA)</strong><br/>
+    A professional desktop application for high-precision color matching, clustering analysis, and batch statistics generation.
  </div>
 </div>

-## Current prototype
- Custom frameless window with minimise / maximise / close controls that hook into Windows natively
- Dark themed layout and basic image preview powered by Qt
- “Open image” workflow that displays the selected asset scaled to the viewport
+## Features
+- **High-Performance Image Processing:** Native, vectorized NumPy operations for lightning-fast HSV conversion and color matching.
+- **Automatic Background Exclusion:** Intelligently ignores background pixels (configurable in `config.toml`) to ensure they don't interfere with your analysis.
+- **Grouping Score (Clustering):** A high-performance 9x9 box-sum algorithm that rewards solid "splashes" of color and penalizes thin lines or fragmented noise.
+- **Batch Processing & Customizable Export:** Load a folder of images and instantly export `icra_stats.csv` and `icra_settings.json`. Features a dedicated **Weighting Dialog** to customize the impact of each core component.
+- **Import/Export Settings:** Save your HSV ranges, exclusion zones, and weighting preferences to a JSON file and reload them later for consistent analysis across different sessions.
+- **Eyedropper Tool:** Quickly pick target matching colors directly from the image canvas.
+- **Advanced Selection:** Support for exclusion zones (rectangles and free-draw polygons) overlaid on the image, all dynamically rendered via `QGraphicsView`.
+- **Modern UI & UX:** 
+  - Drag-and-drop support for files and folders.
+  - Custom dark and light themes with native-feeling borderless titlebars and a categorized menu bar.
+  - Window size and position persistence between launches.
+  - Keyboard shortcuts for rapid workflow.
+- **Configurable:** Uses `config.toml` to drive everything from overlay matching colors to default sliders and application language (`en`/`de`).

-> ⚠️ Legacy Tk features (sliders, exclusions, folder navigation, stats) are not wired up yet. The goal here is to validate the PySide6 shell first.
+## Core Concepts
+
+### 1. HSV Color Matching
+Instead of simple RGB, ICRA uses the **HSV (Hue, Saturation, Value)** color space. This allows for more intuitive color selection:
+- **Hue (0-360°):** The base "color" (Red, Green, Blue, etc.).
+- **Saturation (0-100%):** The intensity or "vibrancy".
+- **Value (0-100%):** The brightness.
+Matching is performed by checking if each pixel's HSV values fall within your defined ranges.
+
+### 2. Scoring Components
+The **Composite Score** is calculated weighted by your preferences:
+- **Match (Keep):** Percentage of matching pixels *after* excluding your manual shapes and background areas.
+- **Match (All):** Percentage of matching pixels across the entire image.
+- **Brightness Score:** Calculated from the average brightness of the "Keep" areas. If "Prefer Dark" is ON, lower brightness results in a higher score.
+- **Grouping Score:** Uses a 9x9 box-sum density check. Higher values indicate that matching pixels are clustered into solid blocks rather than scattered noise.
+
+### 3. Background Filtering
+To ensure accurate statistics, ICRA automatically filters out the image background (e.g., the dark grey/black backdrop in weapon screenshots). These settings are fully configurable in `config.toml`, allowing you to adjust the target color and the tolerance required for exclusion.
+
+### 4. Exclusion Zones
+Use the **Exclusion Tool** to draw rectangles or polygons over areas you want to ignore. This is essential for focusing your analysis on specific parts of a complex image while ignoring background noise or irrelevant details.
+
+## Typical Workflow
+
+1.  **Load Data:** Drag and drop a folder or use the `File` menu to load your images.
+2.  **Pick Color:** Use the Eyedropper tool to select your target color directly from the image.
+3.  **Refine HSV:** Fine-tune the Hue, Saturation, and Value sliders to perfect the mask.
+4.  **Draw Exclusions:** Add exclusion shapes to ignore parts of the image that shouldn't be counted.
+5.  **Export:** Click `Export Folder Stats`. Define your weights (e.g., prioritize the Grouping Score if you want coherent splashes) and save your results.
+6.  **Persistent Settings:** Use `File -> Export Settings` to save your configuration, or `File -> Import Settings` to restore a previous setup.

 ## Requirements
 - Python 3.11+
 - [uv](https://github.com/astral-sh/uv) for dependency management
- Windows 10/11 recommended (PySide6 build included; Linux/macOS should work but are untested in this branch)
+- Works across Windows, macOS, and Linux (requires PySide6 and numpy)

-## Setup with uv (PowerShell example)
+## Setup with uv
 ```bash
 git clone https://git.lukasmahler.de/lm/ICRA.git
 cd ICRA
@ -28,24 +67,30 @@ uv pip install .
 uv run icra
 ```

-The app launches directly as a PySide6 GUI—no browser or local web server involved. Use the “Open Image…” button to load a file and test resizing/snap behaviour.
+## Running the Test Suite
+The core image processing logic and UI data models are rigorously tested using `pytest`.
+```bash
+uv run pytest tests/ -v
+```

-## Roadmap (branch scope)
-1. Port hue/saturation/value controls to Qt widgets
-2. Re-implement exclusion drawing using QPainter overlays
-3. Integrate existing image-processing logic (`app/logic`) with the new UI
-
-## Project layout
+## Project Layout
 ```
 app/
-  assets/        # Shared branding
-  gui/, logic/   # Legacy Tk code kept for reference
-  qt/            # New PySide6 implementation (main_window, app bootstrap)
-config.toml      # Historical defaults (unused in the prototype)
-main.py          # Entry point -> PySide6 launcher
+  assets/        # Icons and branding
+  lang/          # Translations (TOML)
+  qt/            # UI implementation and NumPy processing
+tests/           # Unit tests for core analysis
+config.toml      # User-facing configuration
+main.py          # Entry point
+LICENSE          # GNU GPLv3 terms
 ```

-## Development notes
- Quick syntax check: `uv run python -m compileall app main.py`
- Uploaded images are not persisted; the preview uses Qt pixmaps only.
- Contributions welcome—please target this branch with PySide6-specific improvements.
+## Development
+- **Tests**: Run `uv run pytest tests/ -v` to verify the core logic.
+- **Environment**: Managed via `uv`. Run `uv sync` to ensure your environment matches the lockfile.
+
+## Contributing
+Contributions are welcome! Open an issue or submit a pull request.
+
+## License
+GPLv3 License. See the LICENSE file for details.
--- a/app/init.py
+++ b/app/init.py
@ -2,14 +2,8 @@

 from __future__ import annotations

-try:  # Legacy Tk support remains optional
-    from .app import ICRAApp, start_app as start_tk_app  # type: ignore[attr-defined]
-except Exception:  # pragma: no cover
-    ICRAApp = None  # type: ignore[assignment]
-    start_tk_app = None  # type: ignore[assignment]
-
 from .qt import create_application as create_qt_app, run as run_qt_app

 start_app = run_qt_app

-__all__ = ["ICRAApp", "start_tk_app", "create_qt_app", "run_qt_app", "start_app"]
+__all__ = ["create_qt_app", "run_qt_app", "start_app"]
--- a/app/app.py
+++ b/app/app.py
@ -1,176 +0,0 @@
-"""Application composition root."""
-
-from __future__ import annotations
-
-import ctypes
-import platform
-import tkinter as tk
-from importlib import resources
-
-from .gui import ColorPickerMixin, ExclusionMixin, ThemeMixin, UIBuilderMixin
-from .i18n import I18nMixin
-from .logic import DEFAULTS, LANGUAGE, RESET_EXCLUSIONS_ON_IMAGE_CHANGE, ImageProcessingMixin, ResetMixin
-
-
-class ICRAApp(
-    I18nMixin,
-    ThemeMixin,
-    UIBuilderMixin,
-    ImageProcessingMixin,
-    ExclusionMixin,
-    ColorPickerMixin,
-    ResetMixin,
-):
-    """Tkinter based application for isolating configurable colour ranges."""
-
-    def __init__(self, root: tk.Tk):
-        self.root = root
-        self.init_i18n(LANGUAGE)
-        self.root.title(self._t("app.title"))
-        self._setup_window()
-
-        # Theme and styling
-        self.init_theme()
-
-        # Tkinter state variables
-        self.DEFAULTS = DEFAULTS.copy()
-        self.hue_min = tk.DoubleVar(value=self.DEFAULTS["hue_min"])
-        self.hue_max = tk.DoubleVar(value=self.DEFAULTS["hue_max"])
-        self.sat_min = tk.DoubleVar(value=self.DEFAULTS["sat_min"])
-        self.val_min = tk.DoubleVar(value=self.DEFAULTS["val_min"])
-        self.val_max = tk.DoubleVar(value=self.DEFAULTS["val_max"])
-        self.alpha = tk.IntVar(value=self.DEFAULTS["alpha"])
-        self.ref_hue = None
-
-        # Debounce for heavy preview updates
-        self.update_delay_ms = 400
-        self._update_job = None
-
-        # Exclusion rectangles (preview coordinates)
-        self.exclude_shapes: list[dict[str, object]] = []
-        self._rubber_start = None
-        self._rubber_id = None
-        self._stroke_preview_id = None
-        self.exclude_mode = "rect"
-        self.reset_exclusions_on_switch = RESET_EXCLUSIONS_ON_IMAGE_CHANGE
-        self._exclude_mask = None
-        self._exclude_mask_dirty = True
-        self._exclude_mask_px = None
-        self._exclude_canvas_ids: list[int] = []
-        self._current_stroke: list[tuple[int, int]] | None = None
-        self.free_draw_width = 14
-        self.pick_mode = False
-
-        # Image references
-        self.image_path = None
-        self.orig_img = None
-        self.preview_img = None
-        self.preview_tk = None
-        self.overlay_tk = None
-        self.image_paths = []
-        self.current_image_index = -1
-
-        # Build UI
-        self.setup_ui()
-        self._init_copy_menu()
-        self.bring_to_front()
-
-    def _setup_window(self) -> None:
-        screen_width = self.root.winfo_screenwidth()
-        screen_height = self.root.winfo_screenheight()
-        default_width = int(screen_width * 0.8)
-        default_height = int(screen_height * 0.8)
-        default_x = (screen_width - default_width) // 2
-        default_y = (screen_height - default_height) // 4
-        self._window_geometry = f"{default_width}x{default_height}+{default_x}+{default_y}"
-        self._is_maximized = True
-        self._use_overrideredirect = True
-        self.root.geometry(f"{screen_width}x{screen_height}+0+0")
-        self.root.configure(bg="#f2f2f7")
-        try:
-            self.root.overrideredirect(True)
-        except Exception:
-            try:
-                self.root.attributes("-type", "splash")
-            except Exception:
-                pass
-        self._window_icon_ref = None
-        self._apply_window_icon()
-        self._init_window_chrome()
-
-    def _ensure_taskbar_entry(self) -> None:
-        """Force the borderless window to show up in the Windows taskbar."""
-        try:
-            if platform.system() != "Windows":
-                return
-            hwnd = self.root.winfo_id()
-            if not hwnd:
-                self.root.after(50, self._ensure_taskbar_entry)
-                return
-
-            GWL_EXSTYLE = -20
-            WS_EX_TOOLWINDOW = 0x00000080
-            WS_EX_APPWINDOW = 0x00040000
-            SWP_NOSIZE = 0x0001
-            SWP_NOMOVE = 0x0002
-            SWP_NOZORDER = 0x0004
-            SWP_FRAMECHANGED = 0x0020
-
-            user32 = ctypes.windll.user32  # type: ignore[attr-defined]
-            shell32 = ctypes.windll.shell32  # type: ignore[attr-defined]
-
-            style = user32.GetWindowLongW(hwnd, GWL_EXSTYLE)
-            new_style = (style & ~WS_EX_TOOLWINDOW) | WS_EX_APPWINDOW
-            if new_style != style:
-                user32.SetWindowLongW(hwnd, GWL_EXSTYLE, new_style)
-                user32.SetWindowPos(
-                    hwnd,
-                    0,
-                    0,
-                    0,
-                    0,
-                    0,
-                    SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_FRAMECHANGED,
-                )
-
-            app_id = ctypes.c_wchar_p("ICRA.App")
-            shell32.SetCurrentProcessExplicitAppUserModelID(app_id)
-        except Exception:
-            pass
-
-    def _apply_window_icon(self) -> None:
-        try:
-            icon_resource = resources.files("app.assets").joinpath("logo.png")
-            with resources.as_file(icon_resource) as icon_path:
-                icon = tk.PhotoImage(file=str(icon_path))
-            self.root.iconphoto(False, icon)
-            self._window_icon_ref = icon
-        except Exception:
-            self._window_icon_ref = None
-
-    def _init_window_chrome(self) -> None:
-        """Configure a borderless window while retaining a taskbar entry."""
-        try:
-            self.root.bind("<Map>", self._restore_borderless)
-            self.root.after(0, self._restore_borderless)
-            self.root.after(0, self._ensure_taskbar_entry)
-        except Exception:
-            pass
-
-    def _restore_borderless(self, _event=None) -> None:
-        try:
-            if self._use_overrideredirect:
-                self.root.overrideredirect(True)
-            self._ensure_taskbar_entry()
-        except Exception:
-            pass
-
-
-def start_app() -> None:
-    """Entry point used by the CLI script."""
-    root = tk.Tk()
-    app = ICRAApp(root)
-    root.mainloop()
-
-
-__all__ = ["ICRAApp", "start_app"]
--- a/app/gui/init.py
+++ b/app/gui/init.py
@ -1,13 +0,0 @@
-"""GUI-related mixins and helpers for the application."""
-
-from .color_picker import ColorPickerMixin
-from .exclusions import ExclusionMixin
-from .theme import ThemeMixin
-from .ui import UIBuilderMixin
-
-__all__ = [
-    "ColorPickerMixin",
-    "ExclusionMixin",
-    "ThemeMixin",
-    "UIBuilderMixin",
-]
--- a/app/gui/color_picker.py
+++ b/app/gui/color_picker.py
@ -1,158 +0,0 @@
-"""Color selection utilities."""
-
-from __future__ import annotations
-
-import colorsys
-
-from tkinter import colorchooser, messagebox
-
-
-class ColorPickerMixin:
-    """Handles colour selection from dialogs and mouse clicks."""
-
-    ref_hue: float | None
-    hue_span: float = 45.0  # degrees around the picked hue
-    selected_colour: tuple[int, int, int] | None = None
-
-    def choose_color(self):
-        title = self._t("dialog.choose_colour_title") if hasattr(self, "_t") else "Choose colour"
-        rgb, hex_colour = colorchooser.askcolor(title=title)
-        if rgb is None:
-            return
-        r, g, b = (int(round(channel)) for channel in rgb)
-        hue_deg, sat_pct, val_pct = self._apply_rgb_selection(r, g, b)
-        label = hex_colour or f"RGB({r}, {g}, {b})"
-        message = self._t(
-            "status.color_selected",
-            label=label,
-            hue=hue_deg,
-            saturation=sat_pct,
-            value=val_pct,
-        )
-        self.status.config(text=message)
-        self._update_selected_colour(r, g, b)
-
-    def apply_sample_colour(self, hex_colour: str, name: str | None = None) -> None:
-        """Apply a predefined colour preset."""
-        rgb = self._parse_hex_colour(hex_colour)
-        if rgb is None:
-            return
-        hue_deg, sat_pct, val_pct = self._apply_rgb_selection(*rgb)
-        if self.pick_mode:
-            self.pick_mode = False
-        label = name or hex_colour.upper()
-        message = self._t(
-            "status.sample_colour",
-            label=label,
-            hex_code=hex_colour,
-            hue=hue_deg,
-            saturation=sat_pct,
-            value=val_pct,
-        )
-        self.status.config(text=message)
-        self._update_selected_colour(*rgb)
-
-    def enable_pick_mode(self):
-        if self.preview_img is None:
-            messagebox.showinfo(
-                self._t("dialog.info_title"),
-                self._t("dialog.load_image_first"),
-            )
-            return
-        self.pick_mode = True
-        self.status.config(text=self._t("status.pick_mode_ready"))
-
-    def disable_pick_mode(self, event=None):
-        if self.pick_mode:
-            self.pick_mode = False
-            self.status.config(text=self._t("status.pick_mode_ended"))
-
-    def on_canvas_click(self, event):
-        if not self.pick_mode or self.preview_img is None:
-            return
-        x = int(event.x)
-        y = int(event.y)
-        if x < 0 or y < 0 or x >= self.preview_img.width or y >= self.preview_img.height:
-            return
-        r, g, b, a = self.preview_img.getpixel((x, y))
-        if a == 0:
-            return
-        hue_deg, sat_pct, val_pct = self._apply_rgb_selection(r, g, b)
-        self.disable_pick_mode()
-        self.status.config(
-            text=self._t(
-                "status.pick_mode_from_image",
-                hue=hue_deg,
-                saturation=sat_pct,
-                value=val_pct,
-            )
-        )
-        self._update_selected_colour(r, g, b)
-
-    def _apply_rgb_selection(self, r: int, g: int, b: int) -> tuple[float, float, float]:
-        """Update slider ranges based on an RGB colour and return HSV summary."""
-        h, s, v = colorsys.rgb_to_hsv(r / 255.0, g / 255.0, b / 255.0)
-        hue_deg = (h * 360.0) % 360.0
-        self.ref_hue = hue_deg
-        self._set_slider_targets(hue_deg, s, v)
-        self.update_preview()
-        return hue_deg, s * 100.0, v * 100.0
-
-    def _update_selected_colour(self, r: int, g: int, b: int) -> None:
-        self.selected_colour = (r, g, b)
-        hex_colour = f"#{r:02x}{g:02x}{b:02x}"
-        if hasattr(self, "current_colour_sw"):
-            try:
-                self.current_colour_sw.configure(background=hex_colour)
-            except Exception:
-                pass
-        if hasattr(self, "current_colour_label"):
-            try:
-                self.current_colour_label.configure(text=f"({hex_colour})")
-            except Exception:
-                pass
-
-    def _set_slider_targets(self, hue_deg: float, saturation: float, value: float) -> None:
-        span = getattr(self, "hue_span", 45.0)
-        self.hue_min.set((hue_deg - span) % 360)
-        self.hue_max.set((hue_deg + span) % 360)
-
-        sat_pct = saturation * 100.0
-        sat_margin = 35.0
-        sat_min = max(0.0, min(100.0, sat_pct - sat_margin))
-        if saturation <= 0.05:
-            sat_min = 0.0
-        self.sat_min.set(sat_min)
-
-        v_pct = value * 100.0
-        val_margin = 35.0
-        val_min = max(0.0, v_pct - val_margin)
-        val_max = min(100.0, v_pct + val_margin)
-        if value <= 0.15:
-            val_max = min(45.0, max(val_max, 25.0))
-        if value >= 0.85:
-            val_min = max(55.0, min(val_min, 80.0))
-        if val_max <= val_min:
-            val_max = min(100.0, val_min + 10.0)
-        self.val_min.set(val_min)
-        self.val_max.set(val_max)
-
-    @staticmethod
-    def _parse_hex_colour(hex_colour: str | None) -> tuple[int, int, int] | None:
-        if not hex_colour:
-            return None
-        value = hex_colour.strip().lstrip("#")
-        if len(value) == 3:
-            value = "".join(ch * 2 for ch in value)
-        if len(value) != 6:
-            return None
-        try:
-            r = int(value[0:2], 16)
-            g = int(value[2:4], 16)
-            b = int(value[4:6], 16)
-        except ValueError:
-            return None
-        return r, g, b
-
-
-__all__ = ["ColorPickerMixin"]
--- a/app/gui/exclusions.py
+++ b/app/gui/exclusions.py
@ -1,207 +0,0 @@
-"""Mouse handlers for exclusion shapes."""
-
-from __future__ import annotations
-
-
-class ExclusionMixin:
-    """Manage exclusion shapes (rectangles and freehand strokes) on the preview canvas."""
-
-    def _exclude_start(self, event):
-        if self.preview_img is None:
-            return
-        mode = getattr(self, "exclude_mode", "rect")
-        x = max(0, min(self.preview_img.width - 1, int(event.x)))
-        y = max(0, min(self.preview_img.height - 1, int(event.y)))
-        if mode == "free":
-            self._current_stroke = [(x, y)]
-            preview_id = getattr(self, "_stroke_preview_id", None)
-            if preview_id:
-                try:
-                    self.canvas_orig.delete(preview_id)
-                except Exception:
-                    pass
-            accent = self._exclusion_preview_colour()
-            self._stroke_preview_id = self.canvas_orig.create_line(
-                x,
-                y,
-                x,
-                y,
-                fill=accent,
-                width=2,
-                smooth=True,
-                capstyle="round",
-                joinstyle="round",
-            )
-            self._rubber_start = None
-            return
-        self._rubber_start = (x, y)
-        if self._rubber_id:
-            try:
-                self.canvas_orig.delete(self._rubber_id)
-            except Exception:
-                pass
-        accent = self._exclusion_preview_colour()
-        self._rubber_id = self.canvas_orig.create_rectangle(x, y, x, y, outline=accent, width=2)
-
-    def _exclude_drag(self, event):
-        mode = getattr(self, "exclude_mode", "rect")
-        if mode == "free":
-            stroke = getattr(self, "_current_stroke", None)
-            if not stroke:
-                return
-            x = max(0, min(self.preview_img.width - 1, int(event.x)))
-            y = max(0, min(self.preview_img.height - 1, int(event.y)))
-            if stroke[-1] != (x, y):
-                stroke.append((x, y))
-                preview_id = getattr(self, "_stroke_preview_id", None)
-                if preview_id:
-                    coords = [coord for point in stroke for coord in point]
-                    self.canvas_orig.coords(preview_id, *coords)
-            return
-        if not self._rubber_start:
-            return
-        x0, y0 = self._rubber_start
-        x1 = max(0, min(self.preview_img.width - 1, int(event.x)))
-        y1 = max(0, min(self.preview_img.height - 1, int(event.y)))
-        self.canvas_orig.coords(self._rubber_id, x0, y0, x1, y1)
-
-    def _exclude_end(self, event):
-        mode = getattr(self, "exclude_mode", "rect")
-        if mode == "free":
-            stroke = getattr(self, "_current_stroke", None)
-            if stroke and len(stroke) > 2:
-                polygon = self._close_polygon(self._compress_stroke(stroke))
-                if len(polygon) >= 3:
-                    shape = {
-                        "kind": "polygon",
-                        "points": polygon,
-                    }
-                    self.exclude_shapes.append(shape)
-                    stamper = getattr(self, "_stamp_shape_on_mask", None)
-                    if callable(stamper):
-                        stamper(shape)
-                    else:
-                        self._exclude_mask_dirty = True
-            self._current_stroke = None
-            preview_id = getattr(self, "_stroke_preview_id", None)
-            if preview_id:
-                try:
-                    self.canvas_orig.delete(preview_id)
-                except Exception:
-                    pass
-            self._stroke_preview_id = None
-            self.update_preview()
-            return
-        if not self._rubber_start:
-            return
-        x0, y0 = self._rubber_start
-        x1 = max(0, min(self.preview_img.width - 1, int(event.x)))
-        y1 = max(0, min(self.preview_img.height - 1, int(event.y)))
-        rx0, rx1 = sorted((x0, x1))
-        ry0, ry1 = sorted((y0, y1))
-        if (rx1 - rx0) > 0 and (ry1 - ry0) > 0:
-            shape = {"kind": "rect", "coords": (rx0, ry0, rx1, ry1)}
-            self.exclude_shapes.append(shape)
-            stamper = getattr(self, "_stamp_shape_on_mask", None)
-            if callable(stamper):
-                stamper(shape)
-            else:
-                self._exclude_mask_dirty = True
-        if self._rubber_id:
-            try:
-                self.canvas_orig.delete(self._rubber_id)
-            except Exception:
-                pass
-        self._rubber_start = None
-        self._rubber_id = None
-        self.update_preview()
-
-    def clear_excludes(self):
-        self.exclude_shapes = []
-        self._rubber_start = None
-        self._current_stroke = None
-        if self._rubber_id:
-            try:
-                self.canvas_orig.delete(self._rubber_id)
-            except Exception:
-                pass
-            self._rubber_id = None
-        if self._stroke_preview_id:
-            try:
-                self.canvas_orig.delete(self._stroke_preview_id)
-            except Exception:
-                pass
-            self._stroke_preview_id = None
-        for item in getattr(self, "_exclude_canvas_ids", []):
-            try:
-                self.canvas_orig.delete(item)
-            except Exception:
-                pass
-        self._exclude_canvas_ids = []
-        self._exclude_mask = None
-        self._exclude_mask_px = None
-        self._exclude_mask_dirty = True
-        self.update_preview()
-
-    def undo_exclude(self):
-        if not getattr(self, "exclude_shapes", None):
-            return
-        self.exclude_shapes.pop()
-        self._exclude_mask_dirty = True
-        self.update_preview()
-
-    def toggle_exclusion_mode(self):
-        current = getattr(self, "exclude_mode", "rect")
-        next_mode = "free" if current == "rect" else "rect"
-        self.exclude_mode = next_mode
-        self._current_stroke = None
-        if next_mode == "free":
-            if self._rubber_id:
-                try:
-                    self.canvas_orig.delete(self._rubber_id)
-                except Exception:
-                    pass
-                self._rubber_id = None
-            self._rubber_start = None
-        else:
-            if self._stroke_preview_id:
-                try:
-                    self.canvas_orig.delete(self._stroke_preview_id)
-                except Exception:
-                    pass
-                self._stroke_preview_id = None
-            self._rubber_id = None
-        message_key = "status.free_draw_enabled" if next_mode == "free" else "status.free_draw_disabled"
-        if hasattr(self, "status"):
-            try:
-                self.status.config(text=self._t(message_key))
-            except Exception:
-                pass
-
-    @staticmethod
-    def _compress_stroke(points: list[tuple[int, int]]) -> list[tuple[int, int]]:
-        """Reduce duplicate points without altering the drawn path too much."""
-        if not points:
-            return []
-        compressed: list[tuple[int, int]] = [points[0]]
-        for point in points[1:]:
-            if point != compressed[-1]:
-                compressed.append(point)
-        return compressed
-
-    def _exclusion_preview_colour(self) -> str:
-        is_dark = getattr(self, "theme", "light") == "dark"
-        return "#ffd700" if is_dark else "#c56217"
-
-    @staticmethod
-    def _close_polygon(points: list[tuple[int, int]]) -> list[tuple[int, int]]:
-        """Ensure the polygon is closed by repeating the start if necessary."""
-        if len(points) < 3:
-            return points
-        closed = list(points)
-        if closed[0] != closed[-1]:
-            closed.append(closed[0])
-        return closed
-
-
-__all__ = ["ExclusionMixin"]
--- a/app/gui/theme.py
+++ b/app/gui/theme.py
@ -1,106 +0,0 @@
-"""Theme and window helpers."""
-
-from __future__ import annotations
-
-import platform
-from tkinter import ttk
-
-try:
-    import winreg
-except Exception:  # pragma: no cover - platform-specific
-    winreg = None  # type: ignore
-
-
-class ThemeMixin:
-    """Provides theme handling utilities for the main application."""
-
-    theme: str
-    style: ttk.Style
-    scale_style: str
-
-    def init_theme(self) -> None:
-        """Initialise ttk style handling and apply the detected theme."""
-        self.style = ttk.Style()
-        self.style.theme_use("clam")
-
-        self.theme = "light"
-        self.apply_theme(self.detect_system_theme())
-
-    def apply_theme(self, mode: str) -> None:
-        """Apply light/dark theme including widget palette."""
-        mode = (mode or "light").lower()
-        self.theme = "dark" if mode == "dark" else "light"
-
-        self.scale_style = "Horizontal.TScale"
-
-        if self.theme == "dark":
-            bg, fg = "#0f0f10", "#f1f1f1"
-            status_fg = "#f5f5f5"
-            highlight_fg = "#f2c744"
-        else:
-            bg, fg = "#ffffff", "#202020"
-            status_fg = "#1c1c1c"
-            highlight_fg = "#c56217"
-        self.root.configure(bg=bg)  # type: ignore[attr-defined]
-
-        s = self.style
-        s.configure("TFrame", background=bg)
-        s.configure("TLabel", background=bg, foreground=fg, font=("Segoe UI", 10))
-        s.configure(
-            "TButton", padding=8, relief="flat", background="#e0e0e0", foreground=fg, font=("Segoe UI", 10)
-        )
-        s.map("TButton", background=[("active", "#d0d0d0")])
-
-        button_refresher = getattr(self, "_refresh_toolbar_buttons_theme", None)
-        if callable(button_refresher):
-            button_refresher()
-
-        nav_refresher = getattr(self, "_refresh_navigation_buttons_theme", None)
-        if callable(nav_refresher):
-            nav_refresher()
-
-        status_refresher = getattr(self, "_refresh_status_palette", None)
-        if callable(status_refresher) and hasattr(self, "status"):
-            status_refresher(status_fg)
-
-        accent_refresher = getattr(self, "_refresh_accent_labels", None)
-        if callable(accent_refresher) and hasattr(self, "filename_label"):
-            accent_refresher(highlight_fg)
-
-        canvas_refresher = getattr(self, "_refresh_canvas_backgrounds", None)
-        if callable(canvas_refresher):
-            canvas_refresher()
-
-    def detect_system_theme(self) -> str:
-        """Best-effort detection of the OS theme preference."""
-        try:
-            if platform.system() == "Windows" and winreg is not None:
-                key = winreg.OpenKey(
-                    winreg.HKEY_CURRENT_USER,
-                    r"Software\Microsoft\Windows\CurrentVersion\Themes\Personalize",
-                )
-                value, _ = winreg.QueryValueEx(key, "AppsUseLightTheme")
-                return "light" if int(value) == 1 else "dark"
-        except Exception:
-            pass
-        return "light"
-
-    def bring_to_front(self) -> None:
-        """Try to focus the window and raise it to the foreground."""
-        try:
-            self.root.lift()
-            self.root.focus_force()
-            self.root.attributes("-topmost", True)
-            self.root.update()
-            self.root.attributes("-topmost", False)
-        except Exception:
-            pass
-
-    def toggle_theme(self) -> None:
-        """Toggle between light and dark themes."""
-        next_mode = "dark" if self.theme == "light" else "light"
-        self.apply_theme(next_mode)
-        self.update_preview()  # type: ignore[attr-defined]
-
-
-__all__ = ["ThemeMixin"]
--- a/app/gui/ui.py
+++ b/app/gui/ui.py
@ -1,731 +0,0 @@
-"""UI helpers and reusable Tk callbacks."""
-
-from __future__ import annotations
-
-import colorsys
-import tkinter as tk
-import tkinter.font as tkfont
-from tkinter import ttk
-
-
-class UIBuilderMixin:
-    """Constructs the Tkinter UI and common widgets."""
-
-    def setup_ui(self) -> None:
-        self._create_titlebar()
-
-        toolbar = ttk.Frame(self.root)
-        toolbar.pack(fill=tk.X, padx=12, pady=(4, 2))
-        buttons = [
-            ("🖼", self._t("toolbar.open_image"), self.load_image),
-            ("📂", self._t("toolbar.open_folder"), self.load_folder),
-            ("🎨", self._t("toolbar.choose_color"), self.choose_color),
-            ("🖱", self._t("toolbar.pick_from_image"), self.enable_pick_mode),
-            ("💾", self._t("toolbar.save_overlay"), self.save_overlay),
-            ("△", self._t("toolbar.toggle_free_draw"), self.toggle_exclusion_mode),
-            ("🧹", self._t("toolbar.clear_excludes"), self.clear_excludes),
-            ("↩", self._t("toolbar.undo_exclude"), self.undo_exclude),
-            ("🔄", self._t("toolbar.reset_sliders"), self.reset_sliders),
-            ("🌓", self._t("toolbar.toggle_theme"), self.toggle_theme),
-        ]
-        self._toolbar_buttons: list[dict[str, object]] = []
-        self._nav_buttons: list[tk.Button] = []
-
-        buttons_frame = ttk.Frame(toolbar)
-        buttons_frame.pack(side=tk.LEFT)
-        for icon, label, command in buttons:
-            self._add_toolbar_button(buttons_frame, icon, label, command)
-
-        status_container = ttk.Frame(toolbar)
-        status_container.pack(side=tk.RIGHT, expand=True, fill=tk.X)
-        self.status = ttk.Label(
-            status_container,
-            text=self._t("status.no_file"),
-            anchor="e",
-            foreground="#efefef",
-        )
-        self.status.pack(fill=tk.X)
-        self._attach_copy_menu(self.status)
-        self.status_default_text = self.status.cget("text")
-        self._status_palette = {"fg": self.status.cget("foreground")}
-
-        palette_frame = ttk.Frame(self.root)
-        palette_frame.pack(fill=tk.X, padx=12, pady=(6, 8))
-        default_colour = self._default_colour_hex()
-
-        current_frame = ttk.Frame(palette_frame)
-        current_frame.pack(side=tk.LEFT, padx=(0, 16))
-        ttk.Label(current_frame, text=self._t("palette.current")).pack(side=tk.LEFT, padx=(0, 6))
-        self.current_colour_sw = tk.Canvas(
-            current_frame,
-            width=24,
-            height=24,
-            highlightthickness=0,
-            background=default_colour,
-            bd=0,
-        )
-        self.current_colour_sw.pack(side=tk.LEFT, pady=2)
-        self.current_colour_label = ttk.Label(current_frame, text=f"({default_colour})")
-        self.current_colour_label.pack(side=tk.LEFT, padx=(6, 0))
-
-        ttk.Label(palette_frame, text=self._t("palette.more")).pack(side=tk.LEFT, padx=(0, 8))
-        swatch_container = ttk.Frame(palette_frame)
-        swatch_container.pack(side=tk.LEFT)
-        for name, hex_code in self._preset_colours():
-            self._add_palette_swatch(swatch_container, name, hex_code)
-
-        sliders_frame = ttk.Frame(self.root)
-        sliders_frame.pack(fill=tk.X, padx=12, pady=4)
-        sliders = [
-            (self._t("sliders.hue_min"), self.hue_min, 0, 360),
-            (self._t("sliders.hue_max"), self.hue_max, 0, 360),
-            (self._t("sliders.sat_min"), self.sat_min, 0, 100),
-            (self._t("sliders.val_min"), self.val_min, 0, 100),
-            (self._t("sliders.val_max"), self.val_max, 0, 100),
-            (self._t("sliders.alpha"), self.alpha, 0, 255),
-        ]
-        for index, (label, variable, minimum, maximum) in enumerate(sliders):
-            self.add_slider_with_value(sliders_frame, label, variable, minimum, maximum, column=index)
-            sliders_frame.grid_columnconfigure(index, weight=1)
-
-        main = ttk.Frame(self.root)
-        main.pack(fill=tk.BOTH, expand=True, padx=12, pady=12)
-
-        left_column = ttk.Frame(main)
-        left_column.pack(side=tk.LEFT, fill=tk.BOTH, expand=True, padx=(0, 6))
-        left_column.grid_columnconfigure(1, weight=1)
-        left_column.grid_rowconfigure(0, weight=1)
-
-        self._create_navigation_button(left_column, "◀", self.show_previous_image, column=0)
-
-        self.canvas_orig = tk.Canvas(
-            left_column,
-            bg=self._canvas_background_colour(),
-            highlightthickness=0,
-            relief="flat",
-        )
-        self.canvas_orig.grid(row=0, column=1, sticky="nsew")
-        self.canvas_orig.bind("<Button-1>", self.on_canvas_click)
-        self.canvas_orig.bind("<ButtonPress-3>", self._exclude_start)
-        self.canvas_orig.bind("<B3-Motion>", self._exclude_drag)
-        self.canvas_orig.bind("<ButtonRelease-3>", self._exclude_end)
-
-        right_column = ttk.Frame(main)
-        right_column.pack(side=tk.RIGHT, fill=tk.BOTH, expand=True, padx=(6, 0))
-        right_column.grid_columnconfigure(0, weight=1)
-        right_column.grid_rowconfigure(0, weight=1)
-
-        self.canvas_overlay = tk.Canvas(
-            right_column,
-            bg=self._canvas_background_colour(),
-            highlightthickness=0,
-            relief="flat",
-        )
-        self.canvas_overlay.grid(row=0, column=0, sticky="nsew")
-        self._create_navigation_button(right_column, "▶", self.show_next_image, column=1)
-
-
-        info_frame = ttk.Frame(self.root)
-        info_frame.pack(fill=tk.X, padx=12, pady=(0, 12))
-        self.filename_label = ttk.Label(
-            info_frame,
-            text="—",
-            font=("Segoe UI", 10, "bold"),
-            anchor="center",
-            justify="center",
-        )
-        self.filename_label.pack(anchor="center")
-        self._attach_copy_menu(self.filename_label)
-
-        self.ratio_label = ttk.Label(
-            info_frame,
-            text=self._t("stats.placeholder"),
-            font=("Segoe UI", 10, "bold"),
-            anchor="center",
-            justify="center",
-        )
-        self.ratio_label.pack(anchor="center", pady=(4, 0))
-        self._attach_copy_menu(self.ratio_label)
-
-        self.root.bind("<Escape>", self.disable_pick_mode)
-        self.root.bind("<ButtonPress-1>", self._maybe_focus_window)
-
-    def add_slider_with_value(self, parent, text, var, minimum, maximum, column=0):
-        cell = ttk.Frame(parent)
-        cell.grid(row=0, column=column, sticky="we", padx=6)
-        header = ttk.Frame(cell)
-        header.pack(fill="x")
-        name_lbl = ttk.Label(header, text=text)
-        name_lbl.pack(side="left")
-        self._attach_copy_menu(name_lbl)
-        val_lbl = ttk.Label(header, text=f"{float(var.get()):.0f}")
-        val_lbl.pack(side="right")
-        self._attach_copy_menu(val_lbl)
-        style_name = getattr(self, "scale_style", "Horizontal.TScale")
-        ttk.Scale(
-            cell,
-            from_=minimum,
-            to=maximum,
-            orient="horizontal",
-            variable=var,
-            style=style_name,
-            command=self.on_slider_change,
-        ).pack(fill="x", pady=(2, 8))
-
-        def on_var_change(*_):
-            val_lbl.config(text=f"{float(var.get()):.0f}")
-
-        try:
-            var.trace_add("write", on_var_change)
-        except Exception:
-            var.trace("w", lambda *_: on_var_change())  # type: ignore[attr-defined]
-
-    def on_slider_change(self, *_):
-        if self._update_job is not None:
-            try:
-                self.root.after_cancel(self._update_job)
-            except Exception:
-                pass
-        self._update_job = self.root.after(self.update_delay_ms, self.update_preview)
-
-    def _preset_colours(self):
-        return [
-            (self._t("palette.swatch.red"), "#ff3b30"),
-            (self._t("palette.swatch.orange"), "#ff9500"),
-            (self._t("palette.swatch.yellow"), "#ffd60a"),
-            (self._t("palette.swatch.green"), "#34c759"),
-            (self._t("palette.swatch.teal"), "#5ac8fa"),
-            (self._t("palette.swatch.blue"), "#0a84ff"),
-            (self._t("palette.swatch.violet"), "#af52de"),
-            (self._t("palette.swatch.magenta"), "#ff2d55"),
-            (self._t("palette.swatch.white"), "#ffffff"),
-            (self._t("palette.swatch.grey"), "#8e8e93"),
-            (self._t("palette.swatch.black"), "#000000"),
-        ]
-
-    def _add_palette_swatch(self, parent, name: str, hex_code: str) -> None:
-        swatch = tk.Canvas(
-            parent,
-            width=24,
-            height=24,
-            highlightthickness=0,
-            background=hex_code,
-            bd=0,
-            relief="flat",
-            takefocus=1,
-            cursor="hand2",
-        )
-        swatch.pack(side=tk.LEFT, padx=4, pady=2)
-
-        def trigger(_event=None, colour=hex_code, label=name):
-            self.apply_sample_colour(colour, label)
-
-        swatch.bind("<Button-1>", trigger)
-        swatch.bind("<space>", trigger)
-        swatch.bind("<Return>", trigger)
-        swatch.bind("<Enter>", lambda _e: swatch.configure(cursor="hand2"))
-        swatch.bind("<Leave>", lambda _e: swatch.configure(cursor="arrow"))
-
-    def _add_toolbar_button(self, parent, icon: str, label: str, command) -> None:
-        font = tkfont.Font(root=self.root, family="Segoe UI", size=9)
-        padding_x = 12
-        gap = font.measure("  ")
-        icon_width = font.measure(icon) or font.measure("  ")
-        label_width = font.measure(label)
-        width = padding_x * 2 + icon_width + gap + label_width
-        height = 28
-        radius = 9
-        bg = self.root.cget("bg") if hasattr(self.root, "cget") else "#f2f2f7"
-        canvas = tk.Canvas(
-            parent,
-            width=width,
-            height=height,
-            bd=0,
-            highlightthickness=0,
-            bg=bg,
-            relief="flat",
-            cursor="hand2",
-            takefocus=1,
-        )
-        canvas.pack(side=tk.LEFT, padx=4, pady=1)
-
-        palette = self._toolbar_palette()
-        rect_id = self._create_round_rect(
-            canvas,
-            1,
-            1,
-            width - 1,
-            height - 1,
-            radius,
-            fill=palette["normal"],
-            outline=palette["outline"],
-            width=1,
-        )
-        icon_id = canvas.create_text(
-            padding_x,
-            height / 2,
-            text=icon,
-            font=font,
-            fill=palette["text"],
-            anchor="w",
-        )
-        label_id = canvas.create_text(
-            padding_x + icon_width + gap,
-            height / 2,
-            text=label,
-            font=font,
-            fill=palette["text"],
-            anchor="w",
-        )
-
-        button_data = {
-            "canvas": canvas,
-            "rect": rect_id,
-            "text_ids": (icon_id, label_id),
-            "command": command,
-            "palette": palette.copy(),
-            "dimensions": (width, height, radius),
-        }
-        self._toolbar_buttons.append(button_data)
-
-        def set_fill(state: str) -> None:
-            pal: dict[str, str] = button_data["palette"]  # type: ignore[index]
-            canvas.itemconfigure(rect_id, fill=pal[state])  # type: ignore[index]
-
-        def execute():
-            command()
-
-        def on_press(_event=None):
-            set_fill("active")
-
-        def on_release(event=None):
-            if event is not None and (
-                event.x < 0 or event.y < 0 or event.x > width or event.y > height
-            ):
-                set_fill("normal")
-                return
-            set_fill("hover")
-            self.root.after_idle(execute)
-
-        def on_enter(_event):
-            set_fill("hover")
-
-        def on_leave(_event):
-            set_fill("normal")
-
-        def on_focus_in(_event):
-            pal: dict[str, str] = button_data["palette"]  # type: ignore[index]
-            canvas.itemconfigure(rect_id, outline=pal["outline_focus"])  # type: ignore[index]
-
-        def on_focus_out(_event):
-            pal: dict[str, str] = button_data["palette"]  # type: ignore[index]
-            canvas.itemconfigure(rect_id, outline=pal["outline"])  # type: ignore[index]
-
-        def invoke_keyboard(_event=None):
-            set_fill("active")
-            canvas.after(120, lambda: set_fill("hover"))
-            self.root.after_idle(execute)
-
-        canvas.bind("<ButtonPress-1>", on_press)
-        canvas.bind("<ButtonRelease-1>", on_release)
-        canvas.bind("<Enter>", on_enter)
-        canvas.bind("<Leave>", on_leave)
-        canvas.bind("<FocusIn>", on_focus_in)
-        canvas.bind("<FocusOut>", on_focus_out)
-        canvas.bind("<space>", invoke_keyboard)
-        canvas.bind("<Return>", invoke_keyboard)
-
-    @staticmethod
-    def _create_round_rect(canvas: tk.Canvas, x1, y1, x2, y2, radius, **kwargs):
-        points = [
-            x1 + radius,
-            y1,
-            x2 - radius,
-            y1,
-            x2,
-            y1,
-            x2,
-            y1 + radius,
-            x2,
-            y2 - radius,
-            x2,
-            y2,
-            x2 - radius,
-            y2,
-            x1 + radius,
-            y2,
-            x1,
-            y2,
-            x1,
-            y2 - radius,
-            x1,
-            y1 + radius,
-            x1,
-            y1,
-        ]
-        return canvas.create_polygon(points, smooth=True, splinesteps=24, **kwargs)
-
-    def _create_navigation_button(self, container, symbol: str, command, *, column: int) -> None:
-        palette = self._navigation_palette()
-        bg = palette["bg"]
-        fg = palette["fg"]
-        container.grid_rowconfigure(0, weight=1)
-        btn = tk.Button(
-            container,
-            text=symbol,
-            command=command,
-            font=("Segoe UI", 26, "bold"),
-            relief="flat",
-            borderwidth=0,
-            background=bg,
-            activebackground=bg,
-            highlightthickness=0,
-            fg=fg,
-            activeforeground=fg,
-            cursor="hand2",
-            width=2,
-        )
-        btn.grid(row=0, column=column, sticky="ns", padx=6)
-        self._nav_buttons.append(btn)
-
-    def _create_titlebar(self) -> None:
-        bar_bg = "#1f1f1f"
-        title_bar = tk.Frame(self.root, bg=bar_bg, relief="flat", height=34)
-        title_bar.pack(fill=tk.X, side=tk.TOP)
-        title_bar.pack_propagate(False)
-
-        logo = None
-        try:
-            from PIL import Image, ImageTk  # type: ignore
-            from importlib import resources
-
-            logo_resource = resources.files("app.assets").joinpath("logo.png")
-            with resources.as_file(logo_resource) as logo_path:
-                image = Image.open(logo_path).convert("RGBA")
-                image.thumbnail((26, 26))
-                logo = ImageTk.PhotoImage(image)
-        except Exception:
-            logo = None
-
-        if logo is not None:
-            logo_label = tk.Label(title_bar, image=logo, bg=bar_bg)
-            logo_label.image = logo  # keep reference
-            logo_label.pack(side=tk.LEFT, padx=(10, 6), pady=4)
-
-        title_label = tk.Label(
-            title_bar,
-            text=self._t("app.title"),
-            bg=bar_bg,
-            fg="#f5f5f5",
-            font=("Segoe UI", 11, "bold"),
-            anchor="w",
-        )
-        title_label.pack(side=tk.LEFT, padx=6)
-
-        btn_kwargs = {
-            "bg": bar_bg,
-            "fg": "#f5f5f5",
-            "activebackground": "#3a3a40",
-            "activeforeground": "#ffffff",
-            "borderwidth": 0,
-            "highlightthickness": 0,
-            "relief": "flat",
-            "font": ("Segoe UI", 10, "bold"),
-            "cursor": "hand2",
-            "width": 3,
-        }
-
-        close_btn = tk.Button(title_bar, text="✕", command=self._close_app, **btn_kwargs)
-        close_btn.pack(side=tk.RIGHT, padx=6, pady=4)
-        close_btn.bind("<Enter>", lambda _e: close_btn.configure(bg="#cf212f"))
-        close_btn.bind("<Leave>", lambda _e: close_btn.configure(bg=bar_bg))
-
-        max_btn = tk.Button(title_bar, text="❐", command=self._toggle_maximize_window, **btn_kwargs)
-        max_btn.pack(side=tk.RIGHT, padx=0, pady=4)
-        max_btn.bind("<Enter>", lambda _e: max_btn.configure(bg="#2c2c32"))
-        max_btn.bind("<Leave>", lambda _e: max_btn.configure(bg=bar_bg))
-        self._max_button = max_btn
-
-        min_btn = tk.Button(title_bar, text="—", command=self._minimize_window, **btn_kwargs)
-        min_btn.pack(side=tk.RIGHT, padx=0, pady=4)
-        min_btn.bind("<Enter>", lambda _e: min_btn.configure(bg="#2c2c32"))
-        min_btn.bind("<Leave>", lambda _e: min_btn.configure(bg=bar_bg))
-
-        for widget in (title_bar, title_label):
-            widget.bind("<ButtonPress-1>", self._start_window_drag)
-            widget.bind("<B1-Motion>", self._perform_window_drag)
-            widget.bind("<Double-Button-1>", lambda _e: self._toggle_maximize_window())
-
-        self._update_maximize_button()
-
-    def _close_app(self) -> None:
-        try:
-            self.root.destroy()
-        except Exception:
-            pass
-
-    def _start_window_drag(self, event) -> None:
-        if getattr(self, "_is_maximized", False):
-            cursor_x, cursor_y = event.x_root, event.y_root
-            self._toggle_maximize_window(force_state=False)
-            self.root.update_idletasks()
-            new_x = self.root.winfo_rootx()
-            new_y = self.root.winfo_rooty()
-            self._drag_offset = (cursor_x - new_x, cursor_y - new_y)
-            return
-        self._drag_offset = (event.x_root - self.root.winfo_rootx(), event.y_root - self.root.winfo_rooty())
-
-    def _perform_window_drag(self, event) -> None:
-        offset = getattr(self, "_drag_offset", None)
-        if offset is None:
-            return
-        x = event.x_root - offset[0]
-        y = event.y_root - offset[1]
-        self.root.geometry(f"+{x}+{y}")
-        if not getattr(self, "_is_maximized", False):
-            self._remember_window_geometry()
-
-    def _remember_window_geometry(self) -> None:
-        try:
-            self._window_geometry = self.root.geometry()
-        except Exception:
-            pass
-
-    def _monitor_work_area(self) -> tuple[int, int, int, int] | None:
-        try:
-            import ctypes
-            from ctypes import wintypes
-
-            user32 = ctypes.windll.user32  # type: ignore[attr-defined]
-            root_x = self.root.winfo_rootx()
-            root_y = self.root.winfo_rooty()
-            width = max(self.root.winfo_width(), 1)
-            height = max(self.root.winfo_height(), 1)
-            center_x = root_x + width // 2
-            center_y = root_y + height // 2
-
-            class MONITORINFO(ctypes.Structure):
-                _fields_ = [
-                    ("cbSize", wintypes.DWORD),
-                    ("rcMonitor", wintypes.RECT),
-                    ("rcWork", wintypes.RECT),
-                    ("dwFlags", wintypes.DWORD),
-                ]
-
-            monitor = user32.MonitorFromPoint(
-                wintypes.POINT(center_x, center_y), 2  # MONITOR_DEFAULTTONEAREST
-            )
-            info = MONITORINFO()
-            info.cbSize = ctypes.sizeof(MONITORINFO)
-            if not user32.GetMonitorInfoW(monitor, ctypes.byref(info)):
-                return None
-            work = info.rcWork
-            return work.left, work.top, work.right, work.bottom
-        except Exception:
-            return None
-
-    def _maximize_window(self) -> None:
-        self._remember_window_geometry()
-        work_area = self._monitor_work_area()
-        if work_area is None:
-            screen_width = self.root.winfo_screenwidth()
-            screen_height = self.root.winfo_screenheight()
-            left = 0
-            top = 0
-            width = screen_width
-            height = screen_height
-        else:
-            left, top, right, bottom = work_area
-            width = max(1, right - left)
-            height = max(1, bottom - top)
-        self.root.geometry(f"{width}x{height}+{left}+{top}")
-        self._is_maximized = True
-        self._update_maximize_button()
-
-    def _restore_window(self) -> None:
-        geometry = getattr(self, "_window_geometry", None)
-        if not geometry:
-            screen_width = self.root.winfo_screenwidth()
-            screen_height = self.root.winfo_screenheight()
-            width = int(screen_width * 0.8)
-            height = int(screen_height * 0.8)
-            x = (screen_width - width) // 2
-            y = (screen_height - height) // 4
-            geometry = f"{width}x{height}+{x}+{y}"
-        self.root.geometry(geometry)
-        self._is_maximized = False
-        self._update_maximize_button()
-
-    def _toggle_maximize_window(self, force_state: bool | None = None) -> None:
-        desired = force_state if force_state is not None else not getattr(self, "_is_maximized", False)
-        if desired:
-            self._maximize_window()
-        else:
-            self._restore_window()
-
-    def _minimize_window(self) -> None:
-        try:
-            self._remember_window_geometry()
-            use_or = getattr(self, "_use_overrideredirect", False)
-            if use_or and hasattr(self.root, "overrideredirect"):
-                try:
-                    self.root.overrideredirect(False)
-                except Exception:
-                    pass
-            self.root.iconify()
-            if use_or:
-                restorer = getattr(self, "_restore_borderless", None)
-                if callable(restorer):
-                    self.root.after(120, restorer)
-                elif hasattr(self.root, "overrideredirect"):
-                    self.root.after(120, lambda: self.root.overrideredirect(True))  # type: ignore[arg-type]
-        except Exception:
-            pass
-
-    def _update_maximize_button(self) -> None:
-        button = getattr(self, "_max_button", None)
-        if button is None:
-            return
-        symbol = "❐" if getattr(self, "_is_maximized", False) else "□"
-        button.configure(text=symbol)
-
-    def _maybe_focus_window(self, _event) -> None:
-        try:
-            self.root.focus_set()
-        except Exception:
-            pass
-
-    def _toolbar_palette(self) -> dict[str, str]:
-        is_dark = getattr(self, "theme", "light") == "dark"
-        if is_dark:
-            return {
-                "normal": "#2f2f35",
-                "hover": "#3a3a40",
-                "active": "#1f1f25",
-                "outline": "#4d4d50",
-                "outline_focus": "#7c7c88",
-                "text": "#f1f1f5",
-            }
-        return {
-            "normal": "#ffffff",
-            "hover": "#ededf4",
-            "active": "#dcdce6",
-            "outline": "#d0d0d8",
-            "outline_focus": "#a9a9b2",
-            "text": "#1f1f1f",
-        }
-
-    def _navigation_palette(self) -> dict[str, str]:
-        is_dark = getattr(self, "theme", "light") == "dark"
-        default_bg = "#0f0f10" if is_dark else "#ededf2"
-        bg = self.root.cget("bg") if hasattr(self.root, "cget") else default_bg
-        fg = "#f5f5f5" if is_dark else "#1f1f1f"
-        return {"bg": bg, "fg": fg}
-
-    def _refresh_toolbar_buttons_theme(self) -> None:
-        if not getattr(self, "_toolbar_buttons", None):
-            return
-        bg = self.root.cget("bg") if hasattr(self.root, "cget") else "#f2f2f7"
-        palette = self._toolbar_palette()
-        for data in self._toolbar_buttons:
-            canvas = data["canvas"]  # type: ignore[index]
-            rect_id = data["rect"]  # type: ignore[index]
-            text_ids = data["text_ids"]  # type: ignore[index]
-            data["palette"] = palette.copy()
-            canvas.configure(bg=bg)
-            canvas.itemconfigure(rect_id, fill=palette["normal"], outline=palette["outline"])
-            for text_id in text_ids:
-                canvas.itemconfigure(text_id, fill=palette["text"])
-
-    def _refresh_navigation_buttons_theme(self) -> None:
-        if not getattr(self, "_nav_buttons", None):
-            return
-        palette = self._navigation_palette()
-        for btn in self._nav_buttons:
-            btn.configure(
-                background=palette["bg"],
-                activebackground=palette["bg"],
-                fg=palette["fg"],
-                activeforeground=palette["fg"],
-            )
-
-    def _canvas_background_colour(self) -> str:
-        return "#0f0f10" if getattr(self, "theme", "light") == "dark" else "#ffffff"
-
-    def _refresh_canvas_backgrounds(self) -> None:
-        bg = self._canvas_background_colour()
-        for attr in ("canvas_orig", "canvas_overlay"):
-            canvas = getattr(self, attr, None)
-            if canvas is not None:
-                try:
-                    canvas.configure(bg=bg)
-                except Exception:
-                    pass
-
-    def _refresh_status_palette(self, fg: str) -> None:
-        self.status.configure(foreground=fg)
-        self._status_palette["fg"] = fg
-
-    def _refresh_accent_labels(self, colour: str) -> None:
-        try:
-            self.filename_label.configure(foreground=colour)
-            self.ratio_label.configure(foreground=colour)
-        except Exception:
-            pass
-
-    def _default_colour_hex(self) -> str:
-        defaults = getattr(self, "DEFAULTS", {})
-        hue_min = float(defaults.get("hue_min", 0.0))
-        hue_max = float(defaults.get("hue_max", hue_min))
-        if hue_min <= hue_max:
-            hue = (hue_min + hue_max) / 2.0
-        else:
-            span = ((hue_max + 360.0) - hue_min) / 2.0
-            hue = (hue_min + span) % 360.0
-
-        sat_min = float(defaults.get("sat_min", 0.0))
-        saturation = (sat_min + 100.0) / 2.0
-
-        val_min = float(defaults.get("val_min", 0.0))
-        val_max = float(defaults.get("val_max", 100.0))
-        value = (val_min + val_max) / 2.0
-
-        r, g, b = colorsys.hsv_to_rgb(hue / 360.0, saturation / 100.0, value / 100.0)
-        return f"#{int(r * 255):02x}{int(g * 255):02x}{int(b * 255):02x}"
-
-    def _init_copy_menu(self):
-        self._copy_target = None
-        self.copy_menu = tk.Menu(self.root, tearoff=0)
-        label = self._t("menu.copy") if hasattr(self, "_t") else "Copy"
-        self.copy_menu.add_command(label=label, command=self._copy_current_label)
-
-    def _attach_copy_menu(self, widget):
-        widget.bind("<Button-3>", lambda event, w=widget: self._show_copy_menu(event, w))
-        widget.bind("<Control-c>", lambda event, w=widget: self._copy_widget_text(w))
-
-    def _show_copy_menu(self, event, widget):
-        self._copy_target = widget
-        try:
-            self.copy_menu.tk_popup(event.x_root, event.y_root)
-        finally:
-            self.copy_menu.grab_release()
-
-    def _copy_current_label(self):
-        if self._copy_target is not None:
-            self._copy_widget_text(self._copy_target)
-
-    def _copy_widget_text(self, widget):
-        try:
-            text = widget.cget("text")
-        except Exception:
-            text = ""
-        if not text:
-            return
-        try:
-            self.root.clipboard_clear()
-            self.root.clipboard_append(text)
-        except Exception:
-            pass
-
-
-__all__ = ["UIBuilderMixin"]
--- a/app/lang/de.toml
+++ b/app/lang/de.toml
@ -10,6 +10,9 @@
 "toolbar.undo_exclude" = "Letzten Ausschluss entfernen"
 "toolbar.reset_sliders" = "Slider zurücksetzen"
 "toolbar.toggle_theme" = "Theme umschalten"
+"toolbar.open_app_folder" = "Programmordner öffnen"
+"toolbar.prefer_dark" = "Dunkelheit bevorzugen"
+"toolbar.exclude_bg" = "Hintergrund ausblenden ({color})"
 "status.no_file" = "Keine Datei geladen."
 "status.defaults_restored" = "Standardwerte aktiv."
 "status.free_draw_enabled" = "Freihand-Ausschluss aktiviert."
@ -17,7 +20,7 @@
 "status.loaded" = "Geladen: {name} — {dimensions}{position}"
 "status.filename_label" = "{name} — {dimensions}{position}"
 "status.color_selected" = "Farbe gewählt: {label} — Hue {hue:.1f}°, S {saturation:.0f}%, V {value:.0f}%"
-"status.sample_colour" = "Beispielfarbe gewählt: {label} ({hex_code}) — Hue {hue:.1f}°, S {saturation:.0f}%, V {value:.0f}%"
+"status.sample_color" = "Beispielfarbe gewählt: {label} ({hex_code}) — Hue {hue:.1f}°, S {saturation:.0f}%, V {value:.0f}%"
 "status.pick_mode_ready" = "Pick-Modus: Klicke links ins Bild, um Farbe zu wählen (Esc beendet)"
 "status.pick_mode_ended" = "Pick-Modus beendet."
 "status.pick_mode_from_image" = "Farbe vom Bild gewählt: Hue {hue:.1f}°, S {saturation:.0f}%, V {value:.0f}%"
@ -37,11 +40,15 @@
 "sliders.hue_min" = "Hue Min (°)"
 "sliders.hue_max" = "Hue Max (°)"
 "sliders.sat_min" = "Sättigung Min (%)"
+"sliders.sat_max" = "Sättigung Max (%)"
 "sliders.val_min" = "Helligkeit Min (%)"
 "sliders.val_max" = "Helligkeit Max (%)"
 "sliders.alpha" = "Overlay Alpha"
 "stats.placeholder" = "Markierungen (mit Ausschlüssen): —"
-"stats.summary" = "Markierungen (mit Ausschlüssen): {with_pct:.2f}%    |    Markierungen (ohne Ausschlüsse): {without_pct:.2f}%    |    Ausgeschlossen: {excluded_pct:.2f}% der Pixel, davon {excluded_match_pct:.2f}% markiert"
+"stats.summary" = "Wertung: {score:.2f}%    |    Treffer (mit Exkl.): {with_pct:.2f}%    |    Treffer: {without_pct:.2f}%    |    {brightness_label}: {brightness:.1f}%    |    Gruppierung: {grouping:.1f}%    |    Ausgeschlossen: {excluded_pct:.2f}%"
+"stats.brightness_label" = "Helligkeit"
+"stats.darkness_label" = "Dunkelheit"
+"stats.grouping_label" = "Gruppierung"
 "menu.copy" = "Kopieren"
 "dialog.info_title" = "Info"
 "dialog.error_title" = "Fehler"
@ -49,7 +56,7 @@
 "dialog.open_image_title" = "Bild wählen"
 "dialog.open_folder_title" = "Ordner mit Bildern wählen"
 "dialog.save_overlay_title" = "Overlay speichern als"
-"dialog.choose_colour_title" = "Farbe wählen"
+"dialog.choose_color_title" = "Farbe wählen"
 "dialog.images_filter" = "Bilder"
 "dialog.folder_not_found" = "Der Ordner wurde nicht gefunden."
 "dialog.folder_empty" = "Keine unterstützten Bilder im Ordner gefunden."
@ -59,4 +66,37 @@
 "dialog.no_image_loaded" = "Kein Bild geladen."
 "dialog.no_preview_available" = "Keine Preview vorhanden."
 "dialog.overlay_saved" = "Overlay gespeichert: {path}"
+"dialog.json_filter" = "JSON-Dateien (*.json)"
+"dialog.export_settings_title" = "Einstellungen als JSON exportieren"
+"dialog.import_settings_title" = "Einstellungen aus JSON importieren"
+"status.settings_exported" = "Einstellungen exportiert: {path}"
+"status.settings_imported" = "Einstellungen importiert."
+"toolbar.export_settings" = "Einstellungen exportieren (JSON)"
+"toolbar.import_settings" = "Einstellungen importieren (JSON)"
+"dialog.export_stats_title" = "Ordner-Statistiken exportieren (CSV)"
+"dialog.csv_filter" = "CSV-Dateien (*.csv)"
 "status.drag_drop" = "Bild oder Ordner hier ablegen."
+"status.exporting" = "Statistiken werden exportiert... ({current}/{total})"
+"status.export_done" = "Export abgeschlossen: {path}"
+"toolbar.export_folder" = "Ordner-Statistik"
+"menu.file" = "Datei"
+"menu.edit" = "Bearbeiten"
+"menu.view" = "Ansicht"
+"menu.tools" = "Werkzeuge"
+
+"toolbar.pull_patterns" = "Muster-Bilder laden"
+"dialog.puller_title" = "Muster-Bilder laden"
+"dialog.puller_instruction" = "CSGOSkins.gg Item-URL einfügen:"
+"dialog.puller_start" = "Download starten"
+"dialog.puller_cancel" = "Abbrechen"
+"dialog.puller_invalid_url" = "Ungültiges URL-Format."
+"dialog.puller_success" = "Alle Muster erfolgreich heruntergeladen!"
+
+"dialog.weighting_title" = "Export-Gewichtung & Präferenz"
+"dialog.weighting_instruction" = "Gewichtung der Komponenten festlegen (Summe muss 100% sein):"
+"dialog.weight_match_all" = "Treffer (Alle) %"
+"dialog.weight_match_keep" = "Treffer (Behalten) %"
+"dialog.weight_brightness" = "Helligkeit/Dunkelheit %"
+"dialog.weight_grouping" = "Gruppierung %"
+"dialog.total_weight" = "Gesamt:"
+"dialog.weight_error" = "Die Summe muss genau 100% sein (aktuell {total}%)."
--- a/app/lang/en.toml
+++ b/app/lang/en.toml
@ -2,7 +2,7 @@
 "app.title" = "Interactive Color Range Analyzer"
 "toolbar.open_image" = "Open image"
 "toolbar.open_folder" = "Open folder"
-"toolbar.choose_color" = "Choose colour"
+"toolbar.choose_color" = "Choose color"
 "toolbar.pick_from_image" = "Pick from image"
 "toolbar.save_overlay" = "Save overlay"
 "toolbar.clear_excludes" = "Clear exclusions"
@ -10,19 +10,22 @@
 "toolbar.undo_exclude" = "Undo last exclusion"
 "toolbar.reset_sliders" = "Reset sliders"
 "toolbar.toggle_theme" = "Toggle theme"
+"toolbar.open_app_folder" = "Open application folder"
+"toolbar.prefer_dark" = "Prefer darkness"
+"toolbar.exclude_bg" = "Exclude Background ({color})"
 "status.no_file" = "No file loaded."
 "status.defaults_restored" = "Defaults restored."
 "status.free_draw_enabled" = "Free-draw exclusion mode enabled."
 "status.free_draw_disabled" = "Rectangle exclusion mode enabled."
 "status.loaded" = "Loaded: {name} — {dimensions}{position}"
 "status.filename_label" = "{name} — {dimensions}{position}"
-"status.color_selected" = "Colour chosen: {label} — Hue {hue:.1f}°, S {saturation:.0f}%, V {value:.0f}%"
-"status.sample_colour" = "Sample colour applied: {label} ({hex_code}) — Hue {hue:.1f}°, S {saturation:.0f}%, V {value:.0f}%"
-"status.pick_mode_ready" = "Pick mode: Click the left image to choose a colour (Esc exits)"
+"status.color_selected" = "Color chosen: {label} — Hue {hue:.1f}°, S {saturation:.0f}%, V {value:.0f}%"
+"status.sample_color" = "Sample color applied: {label} ({hex_code}) — Hue {hue:.1f}°, S {saturation:.0f}%, V {value:.0f}%"
+"status.pick_mode_ready" = "Pick mode: Click the left image to choose a color (Esc exits)"
 "status.pick_mode_ended" = "Pick mode ended."
-"status.pick_mode_from_image" = "Colour picked from image: Hue {hue:.1f}°, S {saturation:.0f}%, V {value:.0f}%"
-"palette.current" = "Colour:"
-"palette.more" = "More colours:"
+"status.pick_mode_from_image" = "Color picked from image: Hue {hue:.1f}°, S {saturation:.0f}%, V {value:.0f}%"
+"palette.current" = "Color:"
+"palette.more" = "More colors:"
 "palette.swatch.red" = "Red"
 "palette.swatch.orange" = "Orange"
 "palette.swatch.yellow" = "Yellow"
@ -37,11 +40,15 @@
 "sliders.hue_min" = "Hue min (°)"
 "sliders.hue_max" = "Hue max (°)"
 "sliders.sat_min" = "Saturation min (%)"
+"sliders.sat_max" = "Saturation max (%)"
 "sliders.val_min" = "Value min (%)"
 "sliders.val_max" = "Value max (%)"
 "sliders.alpha" = "Overlay alpha"
 "stats.placeholder" = "Matches (with exclusions): —"
-"stats.summary" = "Matches (with exclusions): {with_pct:.2f}%    |    Matches (without exclusions): {without_pct:.2f}%    |    Excluded: {excluded_pct:.2f}% of pixels, {excluded_match_pct:.2f}% marked"
+"stats.summary" = "Score: {score:.2f}%    |    Matches (w/ excl.): {with_pct:.2f}%    |    Matches: {without_pct:.2f}%    |    {brightness_label}: {brightness:.1f}%    |    Grouping: {grouping:.1f}%    |    Excluded: {excluded_pct:.2f}%"
+"stats.brightness_label" = "Brightness"
+"stats.darkness_label" = "Darkness"
+"stats.grouping_label" = "Grouping"
 "menu.copy" = "Copy"
 "dialog.info_title" = "Info"
 "dialog.error_title" = "Error"
@ -49,7 +56,7 @@
 "dialog.open_image_title" = "Select image"
 "dialog.open_folder_title" = "Select folder"
 "dialog.save_overlay_title" = "Save overlay as"
-"dialog.choose_colour_title" = "Choose colour"
+"dialog.choose_color_title" = "Choose color"
 "dialog.images_filter" = "Images"
 "dialog.folder_not_found" = "The folder could not be found."
 "dialog.folder_empty" = "No supported images were found in the folder."
@ -59,4 +66,37 @@
 "dialog.no_image_loaded" = "No image loaded."
 "dialog.no_preview_available" = "No preview available."
 "dialog.overlay_saved" = "Overlay saved: {path}"
+"dialog.json_filter" = "JSON Files (*.json)"
+"dialog.export_settings_title" = "Export settings to JSON"
+"dialog.import_settings_title" = "Import settings from JSON"
+"status.settings_exported" = "Settings exported: {path}"
+"status.settings_imported" = "Settings imported."
+"toolbar.export_settings" = "Export settings (JSON)"
+"toolbar.import_settings" = "Import settings (JSON)"
+"dialog.export_stats_title" = "Export Folder Statistics (CSV)"
+"dialog.csv_filter" = "CSV Files (*.csv)"
 "status.drag_drop" = "Drop an image or folder here to open it."
+"status.exporting" = "Exporting statistics... ({current}/{total})"
+"status.export_done" = "Export complete: {path}"
+"toolbar.export_folder" = "Export Folder Stats"
+"menu.file" = "File"
+"menu.edit" = "Edit"
+"menu.view" = "View"
+"menu.tools" = "Tools"
+
+"toolbar.pull_patterns" = "Pull Pattern Images"
+"dialog.puller_title" = "Pull Pattern Images"
+"dialog.puller_instruction" = "Paste a CSGOSkins.gg item URL:"
+"dialog.puller_start" = "Start Download"
+"dialog.puller_cancel" = "Cancel"
+"dialog.puller_invalid_url" = "Invalid URL format."
+"dialog.puller_success" = "All patterns downloaded successfully!"
+
+"dialog.weighting_title" = "Export Weighting & Preference"
+"dialog.weighting_instruction" = "Set the weighting for each component (total must be 100%):"
+"dialog.weight_match_all" = "Match (All) %"
+"dialog.weight_match_keep" = "Match (Keep) %"
+"dialog.weight_brightness" = "Brightness/Darkness %"
+"dialog.weight_grouping" = "Grouping %"
+"dialog.total_weight" = "Total:"
+"dialog.weight_error" = "Weights must sum exactly to 100% (currently {total}%)."
--- a/app/logic/init.py
+++ b/app/logic/init.py
@ -1,25 +1,27 @@
-"""Logic utilities and mixins for processing and configuration."""
+"""Logic utilities and configuration constants."""

 from .constants import (
    BASE_DIR,
    DEFAULTS,
    IMAGES_DIR,
    LANGUAGE,
+    OVERLAY_COLOR,
+    EXCLUDE_BG_COLOR,
+    EXCLUDE_BG_TOLERANCE,
    PREVIEW_MAX_SIZE,
    RESET_EXCLUSIONS_ON_IMAGE_CHANGE,
    SUPPORTED_IMAGE_EXTENSIONS,
 )
-from .image_processing import ImageProcessingMixin
-from .reset import ResetMixin

 __all__ = [
    "BASE_DIR",
    "DEFAULTS",
    "IMAGES_DIR",
    "LANGUAGE",
+    "OVERLAY_COLOR",
+    "EXCLUDE_BG_COLOR",
+    "EXCLUDE_BG_TOLERANCE",
    "PREVIEW_MAX_SIZE",
    "RESET_EXCLUSIONS_ON_IMAGE_CHANGE",
    "SUPPORTED_IMAGE_EXTENSIONS",
-    "ImageProcessingMixin",
-    "ResetMixin",
 ]
--- a/app/logic/constants.py
+++ b/app/logic/constants.py
@ -94,7 +94,12 @@ def _extract_language(data: dict[str, Any]) -> str:

 _CONFIG_DATA = _load_config_data()

-_OPTION_DEFAULTS = {"reset_exclusions_on_image_change": False}
+_OPTION_DEFAULTS = {
+    "reset_exclusions_on_image_change": False,
+    "overlay_color": "#ff0000",
+    "exclude_bg_color": "#1f2937",
+    "exclude_bg_tolerance": 5,
+}


 def _extract_options(data: dict[str, Any]) -> dict[str, Any]:
@ -105,6 +110,15 @@ def _extract_options(data: dict[str, Any]) -> dict[str, Any]:
    value = section.get("reset_exclusions_on_image_change")
    if isinstance(value, bool):
        result["reset_exclusions_on_image_change"] = value
+    color = section.get("overlay_color")
+    if isinstance(color, str) and color.startswith("#") and len(color) in (7, 9):
+        result["overlay_color"] = color
+    exclude_bg = section.get("exclude_bg_color")
+    if isinstance(exclude_bg, str) and exclude_bg.startswith("#") and len(exclude_bg) in (7, 9):
+        result["exclude_bg_color"] = exclude_bg
+    tolerance = section.get("exclude_bg_tolerance")
+    if isinstance(tolerance, int):
+        result["exclude_bg_tolerance"] = max(0, min(255, tolerance))
    return result


@ -112,3 +126,6 @@ DEFAULTS = {**_DEFAULTS_BASE, **_extract_default_overrides(_CONFIG_DATA)}
 LANGUAGE = _extract_language(_CONFIG_DATA)
 OPTIONS = {**_OPTION_DEFAULTS, **_extract_options(_CONFIG_DATA)}
 RESET_EXCLUSIONS_ON_IMAGE_CHANGE = OPTIONS["reset_exclusions_on_image_change"]
+OVERLAY_COLOR = OPTIONS["overlay_color"]
+EXCLUDE_BG_COLOR = OPTIONS["exclude_bg_color"]
+EXCLUDE_BG_TOLERANCE = OPTIONS["exclude_bg_tolerance"]
--- a/app/logic/image_processing.py
+++ b/app/logic/image_processing.py
@ -1,485 +0,0 @@
-"""Image loading, processing, and statistics logic."""
-
-from __future__ import annotations
-
-import colorsys
-from pathlib import Path
-from typing import Iterable, Sequence, Tuple
-
-from tkinter import filedialog, messagebox
-
-from PIL import Image, ImageDraw, ImageTk
-
-from .constants import IMAGES_DIR, PREVIEW_MAX_SIZE, SUPPORTED_IMAGE_EXTENSIONS
-
-
-class ImageProcessingMixin:
-    """Handles all image related operations."""
-
-    image_path: Path | None
-    orig_img: Image.Image | None
-    preview_img: Image.Image | None
-    preview_tk: ImageTk.PhotoImage | None
-    overlay_tk: ImageTk.PhotoImage | None
-
-    image_paths: list[Path]
-    current_image_index: int
-
-    def load_image(self) -> None:
-        default_dir = IMAGES_DIR if IMAGES_DIR.exists() else Path.cwd()
-        path = filedialog.askopenfilename(
-            title=self._t("dialog.open_image_title"),
-            filetypes=[(self._t("dialog.images_filter"), "*.webp *.png *.jpg *.jpeg *.bmp")],
-            initialdir=str(default_dir),
-        )
-        if not path:
-            return
-        self._set_image_collection([Path(path)], 0)
-
-    def load_folder(self) -> None:
-        default_dir = IMAGES_DIR if IMAGES_DIR.exists() else Path.cwd()
-        directory = filedialog.askdirectory(
-            title=self._t("dialog.open_folder_title"),
-            initialdir=str(default_dir),
-        )
-        if not directory:
-            return
-        folder = Path(directory)
-        if not folder.exists():
-            messagebox.showerror(
-                self._t("dialog.error_title"),
-                self._t("dialog.folder_not_found"),
-            )
-            return
-        image_files = sorted(
-            (
-                path
-                for path in folder.iterdir()
-                if path.suffix.lower() in SUPPORTED_IMAGE_EXTENSIONS and path.is_file()
-            ),
-            key=lambda item: item.name.lower(),
-        )
-        if not image_files:
-            messagebox.showinfo(
-                self._t("dialog.info_title"),
-                self._t("dialog.folder_empty"),
-            )
-            return
-        self._set_image_collection(image_files, 0)
-
-    def show_next_image(self, event=None) -> None:
-        if not getattr(self, "image_paths", None):
-            return
-        if not self.image_paths:
-            return
-        current = getattr(self, "current_image_index", -1)
-        next_index = (current + 1) % len(self.image_paths)
-        self._display_image_by_index(next_index)
-
-    def show_previous_image(self, event=None) -> None:
-        if not getattr(self, "image_paths", None):
-            return
-        if not self.image_paths:
-            return
-        current = getattr(self, "current_image_index", -1)
-        prev_index = (current - 1) % len(self.image_paths)
-        self._display_image_by_index(prev_index)
-
-    def _set_image_collection(self, paths: Sequence[Path], start_index: int) -> None:
-        self.image_paths = list(paths)
-        if not self.image_paths:
-            return
-        self.exclude_shapes = []
-        self._rubber_start = None
-        self._rubber_id = None
-        self._stroke_preview_id = None
-        self._exclude_canvas_ids = []
-        self._exclude_mask = None
-        self._exclude_mask_px = None
-        self._exclude_mask_dirty = True
-        self.current_image_index = -1
-        self._display_image_by_index(max(0, start_index))
-
-    def _display_image_by_index(self, index: int) -> None:
-        if not self.image_paths:
-            return
-        if index < 0 or index >= len(self.image_paths):
-            return
-        path = self.image_paths[index]
-        if not path.exists():
-            messagebox.showerror(
-                self._t("dialog.error_title"),
-                self._t("dialog.file_missing", path=path),
-            )
-            return
-        try:
-            image = Image.open(path).convert("RGBA")
-        except Exception as exc:
-            messagebox.showerror(
-                self._t("dialog.error_title"),
-                self._t("dialog.image_open_failed", error=exc),
-            )
-            return
-
-        self.image_path = path
-        self.orig_img = image
-        if getattr(self, "reset_exclusions_on_switch", False):
-            self.exclude_shapes = []
-        self._rubber_start = None
-        self._rubber_id = None
-        self._stroke_preview_id = None
-        self._exclude_canvas_ids = []
-        self._exclude_mask = None
-        self._exclude_mask_px = None
-        self._exclude_mask_dirty = True
-        self.pick_mode = False
-
-        self.prepare_preview()
-        self.update_preview()
-
-        dimensions = f"{self.orig_img.width}x{self.orig_img.height}"
-        suffix = f" [{index + 1}/{len(self.image_paths)}]" if len(self.image_paths) > 1 else ""
-        status_text = self._t("status.loaded", name=path.name, dimensions=dimensions, position=suffix)
-        self.status.config(text=status_text)
-        self.status_default_text = status_text
-        if hasattr(self, "filename_label"):
-            filename_text = self._t(
-                "status.filename_label",
-                name=path.name,
-                dimensions=dimensions,
-                position=suffix,
-            )
-            self.filename_label.config(text=filename_text)
-
-        self.current_image_index = index
-
-    def save_overlay(self) -> None:
-        if self.orig_img is None:
-            messagebox.showinfo(
-                self._t("dialog.info_title"),
-                self._t("dialog.no_image_loaded"),
-            )
-            return
-        if self.preview_img is None:
-            messagebox.showerror(
-                self._t("dialog.error_title"),
-                self._t("dialog.no_preview_available"),
-            )
-            return
-
-        overlay = self._build_overlay_image(
-            self.orig_img,
-            tuple(self.exclude_shapes),
-            alpha=int(self.alpha.get()),
-            scale_from_preview=self.preview_img.size,
-            is_match_fn=self.matches_target_color,
-        )
-        merged = Image.alpha_composite(self.orig_img.convert("RGBA"), overlay)
-
-        out_path = filedialog.asksaveasfilename(
-            defaultextension=".png",
-            filetypes=[("PNG", "*.png")],
-            title=self._t("dialog.save_overlay_title"),
-        )
-        if not out_path:
-            return
-        merged.save(out_path)
-        messagebox.showinfo(
-            self._t("dialog.saved_title"),
-            self._t("dialog.overlay_saved", path=out_path),
-        )
-
-    def prepare_preview(self) -> None:
-        if self.orig_img is None:
-            return
-        width, height = self.orig_img.size
-        max_w, max_h = PREVIEW_MAX_SIZE
-        scale = min(max_w / width, max_h / height)
-        if scale <= 0:
-            scale = 1.0
-        size = (max(1, int(width * scale)), max(1, int(height * scale)))
-        self.preview_img = self.orig_img.resize(size, Image.LANCZOS)
-        self.preview_tk = ImageTk.PhotoImage(self.preview_img)
-        self.canvas_orig.delete("all")
-        self.canvas_orig.config(width=size[0], height=size[1])
-        self.canvas_overlay.config(width=size[0], height=size[1])
-        self.canvas_orig.create_image(0, 0, anchor="nw", image=self.preview_tk)
-        self._exclude_mask = None
-        self._exclude_mask_px = None
-        self._exclude_mask_dirty = True
-        if getattr(self, "exclude_shapes", None):
-            self._ensure_exclude_mask()
-
-    def update_preview(self) -> None:
-        if self.preview_img is None:
-            return
-        self._ensure_exclude_mask()
-        merged = self.create_overlay_preview()
-        if merged is None:
-            return
-        self.overlay_tk = ImageTk.PhotoImage(merged)
-        self.canvas_overlay.delete("all")
-        self.canvas_overlay.create_image(0, 0, anchor="nw", image=self.overlay_tk)
-
-        self.canvas_orig.delete("all")
-        self.canvas_orig.create_image(0, 0, anchor="nw", image=self.preview_tk)
-        self._render_exclusion_overlays()
-
-        stats = self.compute_stats_preview()
-        if stats:
-            matches_all, total_all = stats["all"]
-            matches_keep, total_keep = stats["keep"]
-            matches_ex, total_ex = stats["excl"]
-            r_with = (matches_keep / total_keep * 100) if total_keep else 0.0
-            r_no = (matches_all / total_all * 100) if total_all else 0.0
-            excl_share = (total_ex / total_all * 100) if total_all else 0.0
-            excl_match = (matches_ex / total_ex * 100) if total_ex else 0.0
-            self.ratio_label.config(
-                text=self._t(
-                    "stats.summary",
-                    with_pct=r_with,
-                    without_pct=r_no,
-                    excluded_pct=excl_share,
-                    excluded_match_pct=excl_match,
-                )
-            )
-
-        refresher = getattr(self, "_refresh_canvas_backgrounds", None)
-        if callable(refresher):
-            refresher()
-        else:
-            bg = "#0f0f10" if self.theme == "dark" else "#ffffff"
-            self.canvas_orig.configure(bg=bg)
-            self.canvas_overlay.configure(bg=bg)
-
-    def create_overlay_preview(self) -> Image.Image | None:
-        if self.preview_img is None:
-            return None
-        self._ensure_exclude_mask()
-        base = self.preview_img.convert("RGBA")
-        overlay = Image.new("RGBA", base.size, (0, 0, 0, 0))
-        draw = ImageDraw.Draw(overlay)
-        pixels = base.load()
-        mask_px = self._exclude_mask_px
-        width, height = base.size
-        alpha = int(self.alpha.get())
-        for y in range(height):
-            for x in range(width):
-                if mask_px is not None and mask_px[x, y]:
-                    continue
-                r, g, b, a = pixels[x, y]
-                if a == 0:
-                    continue
-                if self.matches_target_color(r, g, b):
-                    draw.point((x, y), fill=(255, 0, 0, alpha))
-        merged = Image.alpha_composite(base, overlay)
-        outline = ImageDraw.Draw(merged)
-        accent_dark = (255, 215, 0, 200)
-        accent_light = (197, 98, 23, 200)
-        accent = accent_dark if getattr(self, "theme", "light") == "dark" else accent_light
-        for shape in getattr(self, "exclude_shapes", []):
-            if shape.get("kind") == "rect":
-                x0, y0, x1, y1 = shape["coords"]  # type: ignore[index]
-                outline.rectangle([x0, y0, x1, y1], outline=accent, width=3)
-            elif shape.get("kind") == "polygon":
-                points = shape.get("points", [])
-                if len(points) < 2:
-                    continue
-                path = points if points[0] == points[-1] else points + [points[0]]
-                outline.line(path, fill=accent, width=2, joint="round")
-        return merged
-
-    def compute_stats_preview(self):
-        if self.preview_img is None:
-            return None
-        self._ensure_exclude_mask()
-        px = self.preview_img.convert("RGBA").load()
-        mask_px = self._exclude_mask_px
-        width, height = self.preview_img.size
-        matches_all = total_all = 0
-        matches_keep = total_keep = 0
-        matches_excl = total_excl = 0
-        for y in range(height):
-            for x in range(width):
-                r, g, b, a = px[x, y]
-                if a == 0:
-                    continue
-                excluded = bool(mask_px and mask_px[x, y])
-                total_all += 1
-                if self.matches_target_color(r, g, b):
-                    matches_all += 1
-                if not excluded:
-                    total_keep += 1
-                    if self.matches_target_color(r, g, b):
-                        matches_keep += 1
-                else:
-                    total_excl += 1
-                    if self.matches_target_color(r, g, b):
-                        matches_excl += 1
-        return {
-            "all": (matches_all, total_all),
-            "keep": (matches_keep, total_keep),
-            "excl": (matches_excl, total_excl),
-        }
-
-    def matches_target_color(self, r, g, b) -> bool:
-        h, s, v = colorsys.rgb_to_hsv(r / 255.0, g / 255.0, b / 255.0)
-        hue = h * 360.0
-        hmin = float(self.hue_min.get())
-        hmax = float(self.hue_max.get())
-        smin = float(self.sat_min.get()) / 100.0
-        vmin = float(self.val_min.get()) / 100.0
-        vmax = float(self.val_max.get()) / 100.0
-        if hmin <= hmax:
-            hue_ok = hmin <= hue <= hmax
-        else:
-            hue_ok = (hue >= hmin) or (hue <= hmax)
-        return hue_ok and (s >= smin) and (v >= vmin) and (v <= vmax)
-
-    def _is_excluded(self, x: int, y: int) -> bool:
-        self._ensure_exclude_mask()
-        if self._exclude_mask_px is None:
-            return False
-        try:
-            return bool(self._exclude_mask_px[x, y])
-        except Exception:
-            return False
-
-    @classmethod
-    def _build_overlay_image(
-        cls,
-        image: Image.Image,
-        shapes: Iterable[dict[str, object]],
-        *,
-        alpha: int,
-        scale_from_preview: Tuple[int, int],
-        is_match_fn,
-    ) -> Image.Image:
-        overlay = Image.new("RGBA", image.size, (0, 0, 0, 0))
-        draw = ImageDraw.Draw(overlay)
-        pixels = image.load()
-        width, height = image.size
-        mask = cls._build_exclude_mask_for_size(tuple(shapes), scale_from_preview, image.size)
-        mask_px = mask.load() if mask else None
-        for y in range(height):
-            for x in range(width):
-                if mask_px is not None and mask_px[x, y]:
-                    continue
-                r, g, b, a = pixels[x, y]
-                if a == 0:
-                    continue
-                if is_match_fn(r, g, b):
-                    draw.point((x, y), fill=(255, 0, 0, alpha))
-        return overlay
-
-    @classmethod
-    def _build_exclude_mask_for_size(
-        cls,
-        shapes: Iterable[dict[str, object]],
-        preview_size: Tuple[int, int],
-        target_size: Tuple[int, int],
-    ) -> Image.Image | None:
-        if not preview_size or not target_size or preview_size[0] == 0 or preview_size[1] == 0:
-            return None
-        mask = Image.new("L", target_size, 0)
-        draw = ImageDraw.Draw(mask)
-        scale_x = target_size[0] / preview_size[0]
-        scale_y = target_size[1] / preview_size[1]
-        for shape in shapes:
-            kind = shape.get("kind")
-            cls._draw_shape_on_mask(draw, shape, scale_x=scale_x, scale_y=scale_y)
-        return mask
-
-    def _ensure_exclude_mask(self) -> None:
-        if self.preview_img is None:
-            return
-        size = self.preview_img.size
-        if (
-            self._exclude_mask is None
-            or self._exclude_mask.size != size
-            or getattr(self, "_exclude_mask_dirty", False)
-        ):
-            self._exclude_mask = Image.new("L", size, 0)
-            draw = ImageDraw.Draw(self._exclude_mask)
-            for shape in getattr(self, "exclude_shapes", []):
-                self._draw_shape_on_mask(draw, shape, scale_x=1.0, scale_y=1.0)
-            self._exclude_mask_px = self._exclude_mask.load()
-            self._exclude_mask_dirty = False
-        elif self._exclude_mask_px is None:
-            self._exclude_mask_px = self._exclude_mask.load()
-
-    def _stamp_shape_on_mask(self, shape: dict[str, object]) -> None:
-        if self.preview_img is None:
-            return
-        if self._exclude_mask is None or self._exclude_mask.size != self.preview_img.size:
-            self._exclude_mask_dirty = True
-            return
-        draw = ImageDraw.Draw(self._exclude_mask)
-        self._draw_shape_on_mask(draw, shape, scale_x=1.0, scale_y=1.0)
-        self._exclude_mask_px = self._exclude_mask.load()
-
-    @staticmethod
-    def _draw_shape_on_mask(
-        draw: ImageDraw.ImageDraw,
-        shape: dict[str, object],
-        *,
-        scale_x: float,
-        scale_y: float,
-    ) -> None:
-        kind = shape.get("kind")
-        if kind == "rect":
-            x0, y0, x1, y1 = shape["coords"]  # type: ignore[index]
-            draw.rectangle(
-                [
-                    x0 * scale_x,
-                    y0 * scale_y,
-                    x1 * scale_x,
-                    y1 * scale_y,
-                ],
-                fill=255,
-            )
-        elif kind == "polygon":
-            points = shape.get("points")
-            if not points or len(points) < 2:
-                return
-            scaled = [(px * scale_x, py * scale_y) for px, py in points]  # type: ignore[misc]
-            draw.polygon(scaled, fill=255)
-
-    def _render_exclusion_overlays(self) -> None:
-        if not hasattr(self, "canvas_orig"):
-            return
-        for item in getattr(self, "_exclude_canvas_ids", []):
-            try:
-                self.canvas_orig.delete(item)
-            except Exception:
-                pass
-        self._exclude_canvas_ids = []
-        accent_dark = "#ffd700"
-        accent_light = "#c56217"
-        accent = accent_dark if getattr(self, "theme", "light") == "dark" else accent_light
-        for shape in getattr(self, "exclude_shapes", []):
-            kind = shape.get("kind")
-            if kind == "rect":
-                x0, y0, x1, y1 = shape["coords"]  # type: ignore[index]
-                item = self.canvas_orig.create_rectangle(
-                    x0, y0, x1, y1, outline=accent, width=3
-                )
-                self._exclude_canvas_ids.append(item)
-            elif kind == "polygon":
-                points = shape.get("points")
-                if not points or len(points) < 2:
-                    continue
-                closed = points if points[0] == points[-1] else points + [points[0]]  # type: ignore[operator]
-                coords = [coord for point in closed for coord in point]  # type: ignore[misc]
-                item = self.canvas_orig.create_line(
-                    *coords,
-                    fill=accent,
-                    width=2,
-                    smooth=True,
-                    capstyle="round",
-                    joinstyle="round",
-                )
-                self._exclude_canvas_ids.append(item)
-
-
-__all__ = ["ImageProcessingMixin"]
--- a/app/logic/reset.py
+++ b/app/logic/reset.py
@ -1,36 +0,0 @@
-"""Utility mixin for restoring default slider values."""
-
-from __future__ import annotations
-
-
-class ResetMixin:
-    def reset_sliders(self):
-        self.hue_min.set(self.DEFAULTS["hue_min"])
-        self.hue_max.set(self.DEFAULTS["hue_max"])
-        self.sat_min.set(self.DEFAULTS["sat_min"])
-        self.val_min.set(self.DEFAULTS["val_min"])
-        self.val_max.set(self.DEFAULTS["val_max"])
-        self.alpha.set(self.DEFAULTS["alpha"])
-        self.update_preview()
-        try:
-            default_hex = self._default_colour_hex()  # type: ignore[attr-defined]
-        except Exception:
-            default_hex = None
-        if default_hex and hasattr(self, "_parse_hex_colour") and hasattr(self, "_update_selected_colour"):
-            try:
-                rgb = self._parse_hex_colour(default_hex)  # type: ignore[attr-defined]
-            except Exception:
-                rgb = None
-            if rgb:
-                try:
-                    self._update_selected_colour(*rgb)  # type: ignore[arg-type,attr-defined]
-                except Exception:
-                    pass
-        default_text = getattr(self, "status_default_text", None)
-        if default_text is None:
-            default_text = self._t("status.defaults_restored") if hasattr(self, "_t") else "Defaults restored."
-        if hasattr(self, "status"):
-            self.status.config(text=default_text)
-
-
-__all__ = ["ResetMixin"]
--- a/app/qt/app.py
+++ b/app/qt/app.py
@ -5,7 +5,7 @@ from __future__ import annotations
 import sys
 from pathlib import Path

-from PySide6 import QtGui, QtWidgets
+from PySide6 import QtCore, QtGui, QtWidgets

 from app.logic import DEFAULTS, LANGUAGE, RESET_EXCLUSIONS_ON_IMAGE_CHANGE
 from .main_window import MainWindow
@ -46,16 +46,23 @@ def create_application() -> QtWidgets.QApplication:
 def run() -> int:
    """Run the PySide6 GUI."""
    app = create_application()
+    from app.logic import OVERLAY_COLOR, EXCLUDE_BG_COLOR, EXCLUDE_BG_TOLERANCE
    window = MainWindow(
        language=LANGUAGE,
        defaults=DEFAULTS.copy(),
        reset_exclusions=RESET_EXCLUSIONS_ON_IMAGE_CHANGE,
+        overlay_color=OVERLAY_COLOR,
+        exclude_bg_color=EXCLUDE_BG_COLOR,
+        exclude_bg_tolerance=EXCLUDE_BG_TOLERANCE,
    )
+
+    # Respect saved geometry from QSettings; fall back to maximised on first launch
+    settings = QtCore.QSettings("ICRA", "MainWindow")
+    if settings.value("geometry"):
+        window.show()
+    else:
        primary_screen = app.primaryScreen()
        if primary_screen is not None:
-        geometry = primary_screen.availableGeometry()
-        window.setGeometry(geometry)
-        window.showMaximized()
-    else:
+            window.setGeometry(primary_screen.availableGeometry())
        window.showMaximized()
    return app.exec()
--- a/app/qt/image_processor.py
+++ b/app/qt/image_processor.py
@ -22,20 +22,48 @@ class Stats:
    total_keep: int = 0
    matches_excl: int = 0
    total_excl: int = 0
+    brightness_score: float = 0.0
+    grouping_score: float = 0.0
+    prefer_dark: bool = False

-    def summary(self, translate) -> str:
+    @property
+    def effective_brightness(self) -> float:
+        """Returns inverted brightness when prefer_dark is on."""
+        return (100.0 - self.brightness_score) if self.prefer_dark else self.brightness_score
+
+    def composite_score(self, weights: dict[str, int]) -> float:
+        """Calculates weighted composite based on provided weights (0-100)."""
+        pct_all = (self.matches_all / self.total_all * 100) if self.total_all else 0.0
+        pct_keep = (self.matches_keep / self.total_keep * 100) if self.total_keep else 0.0
+        
+        # weights keys: match_all, match_keep, brightness, grouping
+        w_all = weights.get("match_all", 30) / 100.0
+        w_keep = weights.get("match_keep", 50) / 100.0
+        w_bright = weights.get("brightness", 10) / 100.0
+        w_group = weights.get("grouping", 10) / 100.0
+        
+        return (w_all * pct_all + 
+                w_keep * pct_keep + 
+                w_bright * self.effective_brightness + 
+                w_group * self.grouping_score)
+
+    def summary(self, translate, weights: dict[str, int]) -> str:
        if self.total_all == 0:
            return translate("stats.placeholder")
        with_pct = (self.matches_keep / self.total_keep * 100) if self.total_keep else 0.0
        without_pct = (self.matches_all / self.total_all * 100) if self.total_all else 0.0
        excluded_pct = (self.total_excl / self.total_all * 100) if self.total_all else 0.0
-        excluded_match_pct = (self.matches_excl / self.total_excl * 100) if self.total_excl else 0.0
+        brightness_label = translate("stats.darkness_label") if self.prefer_dark else translate("stats.brightness_label")
+        score = self.composite_score(weights)
        return translate(
            "stats.summary",
+            score=score,
            with_pct=with_pct,
            without_pct=without_pct,
+            brightness_label=brightness_label,
+            brightness=self.effective_brightness,
+            grouping=self.grouping_score,
            excluded_pct=excluded_pct,
-            excluded_match_pct=excluded_match_pct,
        )


@ -55,7 +83,8 @@ def _rgb_to_hsv_numpy(arr: np.ndarray) -> np.ndarray:
    v = cmax

    # Saturation
-    s = np.where(cmax > 0, delta / cmax, 0.0)
+    s = np.zeros_like(r)
+    np.divide(delta, cmax, out=s, where=cmax > 0)

    # Hue
    h = np.zeros_like(r)
@ -80,10 +109,16 @@ class QtImageProcessor:
        self.current_index: int = -1
        self.stats = Stats()

+        # Overlay tint color
+        self.overlay_r = 255
+        self.overlay_g = 0
+        self.overlay_b = 0
+
        self.defaults: Dict[str, int] = {
            "hue_min": 0,
            "hue_max": 360,
            "sat_min": 25,
+            "sat_max": 100,
            "val_min": 15,
            "val_max": 100,
            "alpha": 120,
@ -91,6 +126,7 @@ class QtImageProcessor:
        self.hue_min = self.defaults["hue_min"]
        self.hue_max = self.defaults["hue_max"]
        self.sat_min = self.defaults["sat_min"]
+        self.sat_max = self.defaults["sat_max"]
        self.val_min = self.defaults["val_min"]
        self.val_max = self.defaults["val_max"]
        self.alpha = self.defaults["alpha"]
@ -98,6 +134,21 @@ class QtImageProcessor:
        self.exclude_shapes: list[dict[str, object]] = []
        self.reset_exclusions_on_switch: bool = False

+        # Mask caching
+        self._cached_mask: np.ndarray | None = None
+        self._cached_mask_size: Tuple[int, int] | None = None
+        self.exclude_ref_size: Tuple[int, int] | None = None
+        self.prefer_dark: bool = False
+        self.exclude_bg: bool = True
+        self.exclude_bg_rgb: Tuple[int, int, int] = (31, 41, 55)
+        self.exclude_bg_tolerance: int = 5
+        self.weights: Dict[str, int] = {
+            "match_all": 30,
+            "match_keep": 50,
+            "brightness": 10,
+            "grouping": 10
+        }
+
    def set_defaults(self, defaults: dict) -> None:
        for key in self.defaults:
            if key in defaults:
@ -154,16 +205,32 @@ class QtImageProcessor:
        if self.orig_img is None:
            self.preview_img = None
            return
-        width, height = self.orig_img.size
+
+        img_to_process = self.orig_img.convert("RGBA")
+        if self.exclude_bg:
+            # Mask the background color with tolerance on the original image before resizing
+            # this prevents interpolation artifacts from leaving a background 'halo'
+            arr = np.array(img_to_process)
+            r_bg, g_bg, b_bg = self.exclude_bg_rgb
+            tol = self.exclude_bg_tolerance
+            bg_mask = (
+                (np.abs(arr[..., 0].astype(np.int16) - r_bg) <= tol) &
+                (np.abs(arr[..., 1].astype(np.int16) - g_bg) <= tol) &
+                (np.abs(arr[..., 2].astype(np.int16) - b_bg) <= tol)
+            )
+            arr[bg_mask, 3] = 0
+            img_to_process = Image.fromarray(arr, "RGBA")
+
+        width, height = img_to_process.size
        max_w, max_h = PREVIEW_MAX_SIZE
        scale = min(max_w / width, max_h / height)
        if scale <= 0:
            scale = 1.0
        size = (max(1, int(width * scale)), max(1, int(height * scale)))
-        self.preview_img = self.orig_img.resize(size, Image.LANCZOS)
+        self.preview_img = img_to_process.resize(size, Image.LANCZOS)

    def _rebuild_overlay(self) -> None:
-        """Build colour-match overlay using vectorized NumPy operations."""
+        """Build color-match overlay using vectorized NumPy operations."""
        if self.preview_img is None:
            self.overlay_img = None
            self.stats = Stats()
@ -173,7 +240,18 @@ class QtImageProcessor:
        arr = np.asarray(base, dtype=np.float32)  # (H, W, 4)

        rgb = arr[..., :3] / 255.0
-        alpha_ch = arr[..., 3]                     # alpha channel of the image
+        alpha_ch = arr[..., 3].copy()              # alpha channel of the image
+        
+        if self.exclude_bg:
+            # Exclude specific background color
+            r_bg, g_bg, b_bg = self.exclude_bg_rgb
+            tol = self.exclude_bg_tolerance
+            bg_mask = (
+                (np.abs(arr[..., 0] - r_bg) <= tol) &
+                (np.abs(arr[..., 1] - g_bg) <= tol) &
+                (np.abs(arr[..., 2] - b_bg) <= tol)
+            )
+            alpha_ch[bg_mask] = 0

        hsv = _rgb_to_hsv_numpy(rgb)               # (H, W, 3): H°, S%, V%

@ -191,9 +269,10 @@ class QtImageProcessor:
        match_mask = (
            hue_ok
            & (sat >= float(self.sat_min))
+            & (sat <= float(self.sat_max))
            & (val >= float(self.val_min))
            & (val <= float(self.val_max))
-            & (alpha_ch > 0)
+            & (alpha_ch >= 128)
        )

        # Exclusion mask (same pixel space as preview)
@ -201,8 +280,7 @@ class QtImageProcessor:

        keep_match = match_mask & ~excl_mask
        excl_match = match_mask & excl_mask
-        visible = alpha_ch > 0
-
+        visible = alpha_ch >= 128
        matches_all = int(match_mask[visible].sum())
        total_all   = int(visible.sum())
        matches_keep = int(keep_match[visible].sum())
@ -210,9 +288,18 @@ class QtImageProcessor:
        matches_excl = int(excl_match[visible].sum())
        total_excl   = int((visible & excl_mask).sum())

+        # Brightness: mean Value (0-100) of ALL non-excluded visible pixels
+        keep_visible = visible & ~excl_mask
+        brightness = float(val[keep_visible].mean()) if keep_visible.any() else 0.0
+        
+        # Grouping: measure clustering of match_mask
+        grouping = self._calculate_grouping_score(keep_match)
+
        # Build overlay image
        overlay_arr = np.zeros((base.height, base.width, 4), dtype=np.uint8)
-        overlay_arr[keep_match, 0] = 255
+        overlay_arr[keep_match, 0] = self.overlay_r
+        overlay_arr[keep_match, 1] = self.overlay_g
+        overlay_arr[keep_match, 2] = self.overlay_b
        overlay_arr[keep_match, 3] = int(self.alpha)

        self.overlay_img = Image.fromarray(overlay_arr, "RGBA")
@ -223,8 +310,100 @@ class QtImageProcessor:
            total_keep=total_keep,
            matches_excl=matches_excl,
            total_excl=total_excl,
+            brightness_score=brightness,
+            grouping_score=grouping,
+            prefer_dark=self.prefer_dark,
        )

+    def get_stats_headless(self, image: Image.Image) -> Stats:
+        """Calculate color-match statistics natively without building UI elements or scaling."""
+        base = image.convert("RGBA")
+        arr = np.asarray(base, dtype=np.float32)
+
+        rgb = arr[..., :3] / 255.0
+        alpha_ch = arr[..., 3].copy()                     
+
+        if self.exclude_bg:
+            # Exclude background color with tolerance
+            r_bg, g_bg, b_bg = self.exclude_bg_rgb
+            tol = self.exclude_bg_tolerance
+            bg_mask = (
+                (np.abs(arr[..., 0] - r_bg) <= tol) &
+                (np.abs(arr[..., 1] - g_bg) <= tol) &
+                (np.abs(arr[..., 2] - b_bg) <= tol)
+            )
+            alpha_ch[bg_mask] = 0
+
+        hsv = _rgb_to_hsv_numpy(rgb)               
+
+        hue = hsv[..., 0]
+        sat = hsv[..., 1]
+        val = hsv[..., 2]
+
+        hue_min = float(self.hue_min)
+        hue_max = float(self.hue_max)
+        if hue_min <= hue_max:
+            hue_ok = (hue >= hue_min) & (hue <= hue_max)
+        else:
+            hue_ok = (hue >= hue_min) | (hue <= hue_max)
+
+        match_mask = (
+            hue_ok
+            & (sat >= float(self.sat_min))
+            & (sat <= float(self.sat_max))
+            & (val >= float(self.val_min))
+            & (val <= float(self.val_max))
+            & (alpha_ch >= 128)
+        )
+
+        excl_mask = self._build_exclusion_mask_numpy(base.size)  
+
+        keep_match = match_mask & ~excl_mask
+        excl_match = match_mask & excl_mask
+
+        visible = alpha_ch >= 128
+        matches_keep_count = int(keep_match[visible].sum())
+        keep_visible = visible & ~excl_mask
+        brightness = float(val[keep_visible].mean()) if keep_visible.any() else 0.0
+        grouping = self._calculate_grouping_score(keep_match)
+
+        return Stats(
+            matches_all=int(match_mask[visible].sum()),
+            total_all=int(visible.sum()),
+            matches_keep=matches_keep_count,
+            total_keep=int((visible & ~excl_mask).sum()),
+            matches_excl=int(excl_match[visible].sum()),
+            total_excl=int((visible & excl_mask).sum()),
+            brightness_score=brightness,
+            grouping_score=grouping,
+            prefer_dark=self.prefer_dark,
+        )
+
+    def _calculate_grouping_score(self, mask: np.ndarray) -> float:
+        """Measure clustering: average density in a 9x9 neighborhood (0-100)."""
+        if not mask.any():
+            return 0.0
+        
+        h, w = mask.shape
+        # Use cumulative sums for O(1) box sum calculation
+        padded = np.pad(mask, 5, mode='constant', constant_values=0)
+        cumsum = padded.astype(np.int32).cumsum(axis=0).cumsum(axis=1)
+        
+        # Indices for 9x9 windows centered at each mask pixel
+        y2, x2 = np.arange(9, 9 + h)[:, None], np.arange(9, 9 + w)
+        y1_1, x1_1 = np.arange(0, h)[:, None], np.arange(0, w)
+        
+        # Box sum formula: S(window) = S(x2,y2) - S(x1-1,y2) - S(x2,y1-1) + S(x1-1,y1-1)
+        window_sums = cumsum[y2, x2] - cumsum[y1_1, x2] - cumsum[y2, x1_1] + cumsum[y1_1, x1_1]
+        
+        # Max neighbors in 9x9 is 80 (excluding the center pixel itself)
+        neighbors = (window_sums - mask.astype(np.int32)).clip(min=0)
+        
+        match_neighbors = neighbors[mask]
+        # Square the density to heavily penalize thin bridges and frayed edges
+        score = ( (match_neighbors / 80.0) ** 2 ).mean() * 100.0
+        return float(score)
+
    # helpers ----------------------------------------------------------------

    def _matches(self, r: int, g: int, b: int) -> bool:
@ -235,11 +414,11 @@ class QtImageProcessor:
            hue_ok = self.hue_min <= hue <= self.hue_max
        else:
            hue_ok = hue >= self.hue_min or hue <= self.hue_max
-        sat_ok = s * 100.0 >= self.sat_min
+        sat_ok = self.sat_min <= s * 100.0 <= self.sat_max
        val_ok = self.val_min <= v * 100.0 <= self.val_max
        return hue_ok and sat_ok and val_ok

-    def pick_colour(self, x: int, y: int) -> Tuple[float, float, float] | None:
+    def pick_color(self, x: int, y: int) -> Tuple[float, float, float] | None:
        """Return (hue°, sat%, val%) of the preview pixel at (x, y), or None."""
        if self.preview_img is None:
            return None
@ -259,8 +438,10 @@ class QtImageProcessor:
        return self._to_pixmap(self.preview_img)

    def overlay_pixmap(self) -> QtGui.QPixmap:
-        if self.preview_img is None or self.overlay_img is None:
+        if self.preview_img is None:
            return QtGui.QPixmap()
+        if self.overlay_img is None:
+            return self.preview_pixmap()
        merged = Image.alpha_composite(self.preview_img.convert("RGBA"), self.overlay_img)
        return self._to_pixmap(merged)

@ -274,7 +455,7 @@ class QtImageProcessor:

    # exclusions -------------------------------------------------------------

-    def set_exclusions(self, shapes: list[dict[str, object]]) -> None:
+    def set_exclusions(self, shapes: list[dict[str, object]], ref_size: Tuple[int, int] | None = None) -> None:
        copied: list[dict[str, object]] = []
        for shape in shapes:
            kind = shape.get("kind")
@ -285,30 +466,87 @@ class QtImageProcessor:
                pts = shape.get("points", [])
                copied.append({"kind": "polygon", "points": [(int(x), int(y)) for x, y in pts]})
        self.exclude_shapes = copied
+        
+        if ref_size:
+            self.exclude_ref_size = ref_size
+        elif self.preview_img:
+            self.exclude_ref_size = self.preview_img.size
+        else:
+            self.exclude_ref_size = None
+            
+        self._cached_mask = None  # Invalidate cache
+        self._cached_mask_size = None
        self._rebuild_overlay()

    def _build_exclusion_mask(self, size: Tuple[int, int]) -> Image.Image | None:
        if not self.exclude_shapes:
            return None
+        
+        target_w, target_h = size
+        ref_w, ref_h = self.exclude_ref_size or size
+        sx = target_w / ref_w if ref_w > 0 else 1.0
+        sy = target_h / ref_h if ref_h > 0 else 1.0
+
        mask = Image.new("L", size, 0)
        draw = ImageDraw.Draw(mask)
        for shape in self.exclude_shapes:
            kind = shape.get("kind")
            if kind == "rect":
                x0, y0, x1, y1 = shape["coords"]  # type: ignore[index]
-                draw.rectangle([x0, y0, x1, y1], fill=255)
+                draw.rectangle([x0 * sx, y0 * sy, x1 * sx, y1 * sy], fill=255)
            elif kind == "polygon":
                points = shape.get("points", [])
                if len(points) >= 3:
-                    draw.polygon(points, fill=255)
+                    scaled_pts = [(int(x * sx), int(y * sy)) for x, y in points]
+                    draw.polygon(scaled_pts, fill=255)
        return mask

+    def set_overlay_color(self, hex_code: str) -> None:
+        """Set the RGB channels for the match overlay from a hex string."""
+        if not hex_code.startswith("#") or len(hex_code) not in (7, 9):
+            return
+        try:
+            self.overlay_r = int(hex_code[1:3], 16)
+            self.overlay_g = int(hex_code[3:5], 16)
+            self.overlay_b = int(hex_code[5:7], 16)
+            if self.preview_img:
+                self._rebuild_overlay()
+        except ValueError:
+            pass
+
    def _build_exclusion_mask_numpy(self, size: Tuple[int, int]) -> np.ndarray:
        """Return a boolean (H, W) mask — True where pixels are excluded."""
+        if self._cached_mask is not None and self._cached_mask_size == size:
+            return self._cached_mask
+
        w, h = size
        if not self.exclude_shapes:
-            return np.zeros((h, w), dtype=bool)
+            mask = np.zeros((h, w), dtype=bool)
+        else:
            pil_mask = self._build_exclusion_mask(size)
            if pil_mask is None:
-            return np.zeros((h, w), dtype=bool)
-        return np.asarray(pil_mask, dtype=bool)
+                mask = np.zeros((h, w), dtype=bool)
+            else:
+                mask = np.asarray(pil_mask, dtype=bool)
+
+        self._cached_mask = mask
+        self._cached_mask_size = size
+        return mask
+
+    def set_exclude_bg_color(self, hex_code: str, tolerance: int = 5) -> None:
+        """Set the RGB channels for background exclusion from a hex string."""
+        self.exclude_bg_tolerance = tolerance
+        if not hex_code.startswith("#") or len(hex_code) not in (7, 9):
+            return
+        try:
+            r = int(hex_code[1:3], 16)
+            g = int(hex_code[3:5], 16)
+            b = int(hex_code[5:7], 16)
+            self.exclude_bg_rgb = (r, g, b)
+        except ValueError:
+            pass
+
+    @property
+    def exclude_bg_color_hex(self) -> str:
+        r, g, b = self.exclude_bg_rgb
+        return f"#{r:02x}{g:02x}{b:02x}"
--- a/app/qt/main_window.py
+++ b/app/qt/main_window.py
--- a/app/qt/pattern_puller.py
+++ b/app/qt/pattern_puller.py
@ -0,0 +1,192 @@
+"""Dialog and worker thread for batch downloading CSGOSkins patterns."""
+
+from __future__ import annotations
+
+import re
+import time
+import urllib.request
+import urllib.error
+from pathlib import Path
+
+from PySide6 import QtCore, QtWidgets, QtGui
+
+from app.i18n import I18nMixin
+import concurrent.futures
+
+class PatternDownloadWorker(QtCore.QThread):
+    progress = QtCore.Signal(int, int)  # current, total
+    status = QtCore.Signal(str)         # textual update
+    finished = QtCore.Signal(bool)      # True if Success, False if Interrupted/Error
+    error = QtCore.Signal(str)          # Error message
+
+    def __init__(self, slug: str, save_dir: Path, parent: QtCore.QObject | None = None) -> None:
+        super().__init__(parent)
+        self.slug = slug
+        self.save_dir = save_dir
+        self.total_seeds = 1000
+
+    def _download_seed(self, seed: int) -> tuple[bool, str | None]:
+        url = f"https://cdn.csgoskins.gg/public/images/patterns/v1/{self.slug}/{seed}.png"
+        filename = self.save_dir / f"{seed}.png"
+
+        if filename.exists():
+            try:
+                from PIL import Image
+                with Image.open(filename) as img:
+                    img.verify()
+                return True, None
+            except Exception:
+                filename.unlink(missing_ok=True)
+
+        try:
+            req = urllib.request.Request(url, headers={'User-Agent': 'Mozilla/5.0 ICRA/1.0'})
+            with urllib.request.urlopen(req, timeout=10) as response:
+                with open(filename, 'wb') as f:
+                    f.write(response.read())
+            
+            try:
+                from PIL import Image
+                with Image.open(filename) as img:
+                    img.verify()
+                return True, None
+            except Exception:
+                filename.unlink(missing_ok=True)
+                return False, "Downloaded file is invalid/corrupt"
+        except urllib.error.HTTPError as e:
+            return False, f"HTTP {e.code}"
+        except Exception as e:
+            filename.unlink(missing_ok=True)
+            return False, f"Network error: {e}"
+
+    def run(self) -> None:
+        self.save_dir.mkdir(parents=True, exist_ok=True)
+        completed = 0
+
+        # Validate seed 1 synchronously first to avoid spawning 1000 threads for invalid slugs
+        success, error_msg = self._download_seed(1)
+        if not success and error_msg in ("HTTP 403", "HTTP 404"):
+            self.error.emit(f"Failed to fetch seed 1. Does '{self.slug}' have patterns?")
+            self.finished.emit(False)
+            return
+        
+        completed += 1
+        self.progress.emit(completed, self.total_seeds)
+
+        # Download the rest concurrently
+        with concurrent.futures.ThreadPoolExecutor(max_workers=20) as executor:
+            future_to_seed = {executor.submit(self._download_seed, seed): seed for seed in range(2, self.total_seeds + 1)}
+            
+            for future in concurrent.futures.as_completed(future_to_seed):
+                if self.isInterruptionRequested():
+                    self.status.emit("Download cancelled. Waiting for threads to finish...")
+                    executor.shutdown(wait=False, cancel_futures=True)
+                    self.finished.emit(False)
+                    return
+
+                seed = future_to_seed[future]
+                completed += 1
+                success, error = future.result()
+                
+                if success:
+                    self.status.emit(f"Downloaded seed {seed}/{self.total_seeds}")
+                else:
+                    self.status.emit(f"Skipped seed {seed} ({error})")
+                
+                self.progress.emit(completed, self.total_seeds)
+
+        self.status.emit("Download complete!")
+        self.finished.emit(True)
+
+
+class PatternPullerDialog(QtWidgets.QDialog, I18nMixin):
+    """Dialog for extracting patterns from CSGOSkins.gg URLs."""
+
+    def __init__(self, language: str, parent: QtWidgets.QWidget | None = None) -> None:
+        super().__init__(parent)
+        self.init_i18n(language)
+        self.setWindowTitle(self._t("dialog.puller_title", default="Pull Pattern Images"))
+        self.setMinimumWidth(450)
+        self._worker: PatternDownloadWorker | None = None
+        self._build_ui()
+
+    def _build_ui(self) -> None:
+        layout = QtWidgets.QVBoxLayout(self)
+        layout.setSpacing(12)
+
+        instruction_label = QtWidgets.QLabel(self._t("dialog.puller_instruction", default="Paste a CSGOSkins.gg item URL:"))
+        layout.addWidget(instruction_label)
+
+        self.url_input = QtWidgets.QLineEdit()
+        self.url_input.setPlaceholderText("https://csgoskins.gg/items/glock-18-trace-lock")
+        layout.addWidget(self.url_input)
+
+        self.status_label = QtWidgets.QLabel("")
+        self.status_label.setStyleSheet("color: palette(window-text); font-style: italic;")
+        layout.addWidget(self.status_label)
+
+        self.progress_bar = QtWidgets.QProgressBar()
+        self.progress_bar.setRange(0, 1000)
+        self.progress_bar.setValue(0)
+        layout.addWidget(self.progress_bar)
+
+        button_layout = QtWidgets.QHBoxLayout()
+        self.start_btn = QtWidgets.QPushButton(self._t("dialog.puller_start", default="Start Download"))
+        self.cancel_btn = QtWidgets.QPushButton(self._t("dialog.puller_cancel", default="Cancel"))
+        
+        self.start_btn.clicked.connect(self._on_start_clicked)
+        self.cancel_btn.clicked.connect(self._on_cancel_clicked)
+
+        button_layout.addWidget(self.start_btn)
+        button_layout.addWidget(self.cancel_btn)
+        layout.addLayout(button_layout)
+
+    def _extract_slug(self, url: str) -> str | None:
+        # Match https://csgoskins.gg/items/SLUG
+        match = re.search(r"csgoskins\.gg/items/([^/?#]+)", url)
+        if match:
+            return match.group(1).lower()
+        return None
+
+    def _on_start_clicked(self) -> None:
+        url = self.url_input.text().strip()
+        slug = self._extract_slug(url)
+        
+        if not slug:
+            QtWidgets.QMessageBox.warning(self, "Error", self._t("dialog.puller_invalid_url", default="Invalid URL format."))
+            return
+
+        save_dir = Path("analyses") / slug / "images"
+
+        self.start_btn.setEnabled(False)
+        self.url_input.setEnabled(False)
+        self.progress_bar.setValue(0)
+        self.status_label.setText("Starting download...")
+
+        self._worker = PatternDownloadWorker(slug=slug, save_dir=save_dir, parent=self)
+        self._worker.progress.connect(self._on_progress)
+        self._worker.status.connect(self.status_label.setText)
+        self._worker.error.connect(self._on_error)
+        self._worker.finished.connect(self._on_finished)
+        self._worker.start()
+
+    def _on_cancel_clicked(self) -> None:
+        if self._worker and self._worker.isRunning():
+            self._worker.requestInterruption()
+            self.cancel_btn.setEnabled(False)
+            self.status_label.setText("Cancelling...")
+        else:
+            self.reject() # Close dialog if not downloading
+
+    def _on_progress(self, current: int, total: int) -> None:
+        self.progress_bar.setValue(current)
+
+    def _on_error(self, message: str) -> None:
+        QtWidgets.QMessageBox.warning(self, "Error", message)
+
+    def _on_finished(self, success: bool) -> None:
+        self.start_btn.setEnabled(True)
+        self.url_input.setEnabled(True)
+        self.cancel_btn.setEnabled(True)
+        self._worker = None
+        if success:
+            QtWidgets.QMessageBox.information(self, "Done", self._t("dialog.puller_success", default="All patterns downloaded successfully!"))
--- a/config.toml
+++ b/config.toml
@ -5,6 +5,12 @@ language = "en"
 [options]
 # Set to true to clear exclusion shapes whenever the image changes.
 reset_exclusions_on_image_change = false
+# Hex color code for the match overlay (e.g. "#ff0000" for Red, "#00ff00" for Green)
+overlay_color = "#ff0000"
+# Hex color code for the background to be excluded (default #1f2937)
+exclude_bg_color = "#1f2937"
+# Tolerance for background color matching (0-255, default 5)
+exclude_bg_tolerance = 5

 [defaults]
 # Override any of the following keys to tweak the initial slider values:
@ -13,6 +19,7 @@ reset_exclusions_on_image_change = false
 hue_min = 250.0
 hue_max = 310.0
 sat_min = 15.0
+sat_max = 100.0
 val_min = 15.0
 val_max = 100.0
-alpha = 120
+alpha = 150
--- a/images/ingame/271.jpg
+++ b/images/ingame/271.jpg
--- a/images/ingame/296.jpg
+++ b/images/ingame/296.jpg
--- a/images/ingame/328.jpg
+++ b/images/ingame/328.jpg
--- a/images/ingame/460.jpg
+++ b/images/ingame/460.jpg
--- a/images/ingame/487.jpg
+++ b/images/ingame/487.jpg
--- a/images/ingame/552.jpg
+++ b/images/ingame/552.jpg
--- a/images/ingame/572.jpg
+++ b/images/ingame/572.jpg
--- a/images/ingame/583.jpg
+++ b/images/ingame/583.jpg
--- a/images/ingame/654.jpg
+++ b/images/ingame/654.jpg
--- a/images/ingame/696.jpg
+++ b/images/ingame/696.jpg
--- a/images/ingame/70.jpg
+++ b/images/ingame/70.jpg
--- a/images/ingame/705.jpg
+++ b/images/ingame/705.jpg
--- a/images/ingame/83.jpg
+++ b/images/ingame/83.jpg
--- a/images/ingame/858.jpg
+++ b/images/ingame/858.jpg
--- a/images/ingame/86.jpg
+++ b/images/ingame/86.jpg
--- a/images/ingame/862.jpg
+++ b/images/ingame/862.jpg
--- a/images/ingame/911.jpg
+++ b/images/ingame/911.jpg
--- a/images/render/271.webp
+++ b/images/render/271.webp
--- a/images/render/296.webp
+++ b/images/render/296.webp
--- a/images/render/328.webp
+++ b/images/render/328.webp
--- a/images/render/460.webp
+++ b/images/render/460.webp
--- a/images/render/487.webp
+++ b/images/render/487.webp
--- a/images/render/552.webp
+++ b/images/render/552.webp
--- a/images/render/572.webp
+++ b/images/render/572.webp
--- a/images/render/583.webp
+++ b/images/render/583.webp
--- a/images/render/654.webp
+++ b/images/render/654.webp
--- a/images/render/696.webp
+++ b/images/render/696.webp
--- a/images/render/70.webp
+++ b/images/render/70.webp
--- a/images/render/705.webp
+++ b/images/render/705.webp
--- a/images/render/83.webp
+++ b/images/render/83.webp
--- a/images/render/858.webp
+++ b/images/render/858.webp
--- a/images/render/86.webp
+++ b/images/render/86.webp
--- a/images/render/862.webp
+++ b/images/render/862.webp
--- a/images/render/911.webp
+++ b/images/render/911.webp
--- a/pyproject.toml
+++ b/pyproject.toml
@ -4,7 +4,7 @@ version = "0.1.0"
 description = "Interactive Color Range Analyzer (ICRA) desktop app (PySide6)"
 readme = "README.md"
 authors = [{ name = "ICRA contributors" }]
-license = "MIT"
+license = "GPL-3.0-only"
 requires-python = ">=3.10"
 dependencies = [
    "numpy>=1.26",
@ -23,3 +23,8 @@ include = ["app"]

 [tool.setuptools.package-data]
 "app" = ["assets/logo.png", "lang/*.toml"]
+
+[dependency-groups]
+dev = [
+    "pytest>=9.0.2",
+]
--- a/tests/test_file_paths.py
+++ b/tests/test_file_paths.py
@ -0,0 +1,72 @@
+import pytest
+from pathlib import Path
+from unittest.mock import MagicMock, patch
+
+from PySide6 import QtWidgets
+from app.qt.main_window import MainWindow
+from app.qt.pattern_puller import PatternDownloadWorker
+
+
+@pytest.fixture
+def qt_app():
+    from PySide6.QtWidgets import QApplication
+    import sys
+    app = QApplication.instance()
+    if app is None:
+        app = QApplication(sys.argv)
+    yield app
+
+
+def test_export_settings_path_generation(qt_app, tmp_path):
+    mock_widget = QtWidgets.QWidget()
+    mock_widget.title_label = MagicMock()
+    mock_widget.apply_theme = MagicMock()
+    with patch('app.qt.main_window.TitleBar', return_value=mock_widget):
+        window = MainWindow(language="en", defaults={}, reset_exclusions=False)
+    
+    with patch("PySide6.QtWidgets.QFileDialog.getSaveFileName", return_value=("", "")) as mock_get_save:
+        
+        # Test case 1: New subfolder structure (analyses/m4a1-s/images/1.png)
+        root = tmp_path / "analyses" / "m4a1_s"
+        img_dir = root / "images"
+        img_dir.mkdir(parents=True)
+        img_path = img_dir / "1.png"
+        
+        window._current_image_path = img_path
+        window.export_settings()
+        
+        # Verify settings directory was created
+        assert (root / "settings").exists()
+        
+        # Verify default path given to QFileDialog
+        args, kwargs = mock_get_save.call_args
+        # args[2] is the default path string
+        expected_path = str(root / "settings" / "icra_settings_m4a1_s.json")
+        assert args[2] == expected_path
+
+
+def test_export_folder_path_generation(qt_app, tmp_path):
+    mock_widget = QtWidgets.QWidget()
+    mock_widget.title_label = MagicMock()
+    mock_widget.apply_theme = MagicMock()
+    with patch('app.qt.main_window.TitleBar', return_value=mock_widget):
+        window = MainWindow(language="en", defaults={}, reset_exclusions=False)
+
+    with patch("PySide6.QtWidgets.QFileDialog.getSaveFileName", return_value=("", "")) as mock_get_save:
+        # Mock processor paths
+        root = tmp_path / "analyses" / "m4a1_s"
+        img_dir = root / "images"
+        img_dir.mkdir(parents=True)
+        window.processor.preview_paths = [img_dir / "1.png"]
+        
+        window.export_folder()
+        
+        assert (root / "results").exists()
+        args, kwargs = mock_get_save.call_args
+        expected_path = str(root / "results" / "icra_results_m4a1_s.csv")
+        assert args[2] == expected_path
+
+
+def test_pattern_download_worker_dir(tmp_path):
+    worker = PatternDownloadWorker(slug="test-slug", save_dir=tmp_path / "analyses" / "test-slug" / "images")
+    assert worker.save_dir == tmp_path / "analyses" / "test-slug" / "images"
--- a/tests/test_image_processor.py
+++ b/tests/test_image_processor.py
@ -0,0 +1,157 @@
+import numpy as np
+import pytest
+from PIL import Image
+
+from app.qt.image_processor import Stats, _rgb_to_hsv_numpy, QtImageProcessor
+
+
+def test_stats_summary():
+    s = Stats(
+        matches_all=50, total_all=100,
+        matches_keep=40, total_keep=80,
+        matches_excl=10, total_excl=20
+    )
+    
+    def mock_t(key, **kwargs):
+        if key == "stats.placeholder":
+            return "Placeholder"
+        if not kwargs:
+            return key
+        return f"{kwargs['with_pct']:.1f} {kwargs['without_pct']:.1f} {kwargs['excluded_pct']:.1f}"
+
+    weights = {"match_all": 30, "match_keep": 50, "brightness": 10, "grouping": 10}
+    res = s.summary(mock_t, weights)
+    # with_pct: 40/80 = 50.0
+    # without_pct: 50/100 = 50.0
+    # excluded_pct: 20/100 = 20.0
+    assert res == "50.0 50.0 20.0"
+
+def test_stats_empty():
+    s = Stats()
+    weights = {"match_all": 30, "match_keep": 50, "brightness": 10, "grouping": 10}
+    assert s.summary(lambda k, **kw: "Empty", weights) == "Empty"
+
+
+def test_rgb_to_hsv_numpy():
+    # Test red
+    arr = np.array([[[1.0, 0.0, 0.0]]], dtype=np.float32)
+    hsv = _rgb_to_hsv_numpy(arr)
+    assert np.allclose(hsv[0, 0], [0.0, 100.0, 100.0])
+
+    # Test green
+    arr = np.array([[[0.0, 1.0, 0.0]]], dtype=np.float32)
+    hsv = _rgb_to_hsv_numpy(arr)
+    assert np.allclose(hsv[0, 0], [120.0, 100.0, 100.0])
+
+    # Test blue
+    arr = np.array([[[0.0, 0.0, 1.0]]], dtype=np.float32)
+    hsv = _rgb_to_hsv_numpy(arr)
+    assert np.allclose(hsv[0, 0], [240.0, 100.0, 100.0])
+
+    # Test white
+    arr = np.array([[[1.0, 1.0, 1.0]]], dtype=np.float32)
+    hsv = _rgb_to_hsv_numpy(arr)
+    assert np.allclose(hsv[0, 0], [0.0, 0.0, 100.0])
+
+    # Test black
+    arr = np.array([[[0.0, 0.0, 0.0]]], dtype=np.float32)
+    hsv = _rgb_to_hsv_numpy(arr)
+    assert np.allclose(hsv[0, 0], [0.0, 0.0, 0.0])
+
+
+def test_qt_processor_matches_legacy():
+    proc = QtImageProcessor()
+    proc.hue_min = 350
+    proc.hue_max = 10
+    proc.sat_min = 50
+    proc.val_min = 50
+    proc.val_max = 100
+
+    # Red wraps around 360, so H=0 -> ok
+    assert proc._matches(255, 0, 0) is True
+    # Green H=120 -> fail
+    assert proc._matches(0, 255, 0) is False
+    # Dark red S=100, V=25 -> fail because val_min=50
+    assert proc._matches(64, 0, 0) is False
+
+def test_set_overlay_color():
+    proc = QtImageProcessor()
+    # default red
+    assert proc.overlay_r == 255
+    assert proc.overlay_g == 0
+    assert proc.overlay_b == 0
+
+    proc.set_overlay_color("#00ff00")
+    assert proc.overlay_r == 0
+    assert proc.overlay_g == 255
+    assert proc.overlay_b == 0
+
+    # invalid hex does nothing
+    proc.set_overlay_color("blue")
+    assert proc.overlay_r == 0
+
+def test_coordinate_scaling():
+    proc = QtImageProcessor()
+    
+    # Create a 200x200 image where everything is red
+    red_img_small = Image.new("RGBA", (200, 200), (255, 0, 0, 255))
+    proc.orig_img = red_img_small # satisfy preview logic
+    proc.preview_img = red_img_small 
+    
+    # All red. Thresholds cover all red.
+    proc.hue_min = 0
+    proc.hue_max = 360
+    proc.sat_min = 10
+    proc.val_min = 10
+    
+    # Exclude the right half (100-200)
+    proc.set_exclusions([{"kind": "rect", "coords": (100, 0, 200, 200)}])
+    
+    # Verify small stats
+    s_small = proc.get_stats_headless(red_img_small)
+    # total=40000, keep=20000, excl=20000
+    assert s_small.total_all == 40000
+    assert s_small.total_keep == 20000
+    assert s_small.total_excl == 20000
+    
+    # Now check on a 1000x1000 image (5x scale)
+    red_img_large = Image.new("RGBA", (1000, 1000), (255, 0, 0, 255))
+    s_large = proc.get_stats_headless(red_img_large)
+    
+    # total=1,000,000. If scaling works, keep=500,000, excl=500,000.
+    # If scaling FAILED, the mask is still 100x200 (20,000 px) -> excl=20,000.
+    assert s_large.total_all == 1000000
+    assert s_large.total_keep == 500000
+    assert s_large.total_excl == 500000
+
+def test_calculate_grouping_score():
+    proc = QtImageProcessor()
+    
+    # 1. Empty mask
+    mask_empty = np.zeros((20, 20), dtype=bool)
+    assert proc._calculate_grouping_score(mask_empty) == 0.0
+    
+    # 2. Single mask pixel (0 neighbors)
+    mask_single = np.zeros((20, 20), dtype=bool)
+    mask_single[10, 10] = True
+    assert proc._calculate_grouping_score(mask_single) == 0.0
+    
+    # 3. 2x2 block
+    # each pixel in 2x2 has 3 neighbors in 3x3, 3 neighbors in 5x5, 3 neighbors in 9x9.
+    # score = ((3/80)^2) * 100
+    expected_2x2 = ((3/80.0)**2) * 100.0
+    mask_block = np.zeros((20, 20), dtype=bool)
+    mask_block[10:12, 10:12] = True
+    assert pytest.approx(proc._calculate_grouping_score(mask_block)) == expected_2x2
+    
+    # 4. 9x9 block
+    # center pixel has 80 neighbors (100% density).
+    # many pixels have high density.
+    mask_9x9 = np.zeros((20, 20), dtype=bool)
+    mask_9x9[5:14, 5:14] = True
+    res_9x9 = proc._calculate_grouping_score(mask_9x9)
+    assert res_9x9 > expected_2x2
+    # For a 9x9 block, the center pixel is 100%. Boundary pixels are less.
+    # 1 center pixel = 80/80 = 1.0. 
+    # Overall it should be a healthy percentage.
+    assert res_9x9 > 10.0 # significant grouping
Author	SHA1	Message	Date
lukas	9ff56ce7ef	Finalize documentation: Simplified layout and GPLv3 License	2026-03-23 21:28:14 +01:00
lukas	5a9cbfc943	Update default alpha value	2026-03-23 21:03:49 +01:00
lukas	ef648cc676	Implement grouping score, customizable export weights, and fix color selection bug	2026-03-23 21:00:16 +01:00
lukas	1c48a53c19	Implement background exclusion and refactor folder structure - Added configurable background exclusion (#1f2937) with tolerance - Implemented alpha thresholding (>= 128) to eliminate edge artifacts - Refactored folder structure into analyses/[slug]/images, settings, and results - Updated pattern puller to skip existing images and handle network errors - Updated .gitignore and automated tests for path integrity	2026-03-22 20:09:05 +01:00
lukas	ff9dec0eff	Add saturation max slider to UI and image processing logic	2026-03-22 17:42:26 +01:00
lukas	daf226a80f	del images	2026-03-13 18:42:42 +01:00
lukas	7f219885bf	Feature: Advanced Navigation & Composite Scoring - Added direct pattern jump input field (Ctrl+J behavior without hotkey) - Implemented Composite Score: 35% match, 55% excl match, 10% brightness - Added 'Prefer darkness' toggle to invert brightness score - Added checkmarks to 'Prefer darkness' and 'Toggle free-draw' menus - Added dynamic Darkness/Brightness text parsing to UI and CSV export	2026-03-11 14:48:24 +01:00
lukas	acfcf99d15	Feature: Settings Import/Export and UI Polish - Implemented JSON-based settings import/export with smart scaling - Locked image overlay color to Red (#ff0000) permanently - Decoupled analyzer target color from display mask color - Added menu separators for better organization - Fixed overlay synchronization and scaling bugs during import	2026-03-10 18:32:14 +01:00
lukas	c278ddf458	Optimize: export speed, fix scaling bug, and improve workflow - Parallelized folder export for massive speedup - Implemented exclusion mask caching - Fixed statistics discrepancy by scaling exclusion coordinates - Hardcoded CSV format to semicolon separator and comma decimal - Defaulted file/folder dialogs to images/ directory - Added unit test for coordinate scaling	2026-03-10 17:59:49 +01:00
lukas	49b436a2f6	Update .gitignore	2026-03-10 17:33:42 +01:00
lukas	ac79d0e5dc	Feature: add pattern scraper and optimize batch export - Added Pull Pattern Images tool with parallel background downloading - Optimized Export Folder Stats to run headlessly (massive speedup) - Dynamically name exported CSVs based on source folder - Fixed German CSV localization and UTF-8 BOM - Updated README and walkthrough	2026-03-10 17:28:15 +01:00
lukas	635b65b7e1	Docs: rewrite README.md for complete PySide6 transition	2026-03-10 16:56:01 +01:00
lukas	551f5a6b8f	Replace toolbar with categorized menu system, standardize 'color', and improve CSV export - Migrated toolbar to QMenuBar to fix UI crowding - Categorized actions into File, Edit, Tools, and View - Added dynamic theming to QMenuBar and QMenu - Localized Export CSV delimiter and decimals for German Excel - Padded exported CSV values for clean plain-text alignment - Globally standardized the spelling of 'color' - Removed duplicate code and old Tkinter codebase	2026-03-10 16:54:23 +01:00