CSG-Picker-Shipper-Helper/docs/session_handover_log.md

Session Hand-off Log — Parts & Invoice Lookup

Important

To the next Claude Session: Read this log to see all modifications. The facts details section is collapsible, resize performance is optimized, desktop icons are fully compiled and configured, and a thorough Stamps.com integration research report is available.

Summary of Changes

1. Collapsible Details Dropdown & Preserved Left-Alignment

• Component: _CollapsibleFrame added in app/ui_parts_tab.py.
• Behavior: Wraps facts grid; starts collapsed (closed) by default. Preserves standard w-alignment (left-aligned) for maximum scan reading speed.

2. Resize Performance Optimization (Smooth Dragging)

• Problem: Resizing the window caused high-frequency flashing/lag.
• Solution: Swapped fg_color="transparent" for solid fg_color=T.PANEL_BG inside scrollable frames self._results_scroll and self._detail. It completely bypasses expensive recursive canvas calculations during resize ticks, resulting in zero-flash smooth resizing (fully visually transparent to users).

3. Desktop Icon Integration & Standalone Executable Custom Icon

• Task: Integrate icon_large.png and icon_small.png into the app.
• Implementation Strategy:
  1. Assets Directory: Copied the icons to app/assets/.
  2. Automated Conversion: Updated both build.bat and run_dev.bat to automatically convert icon_small.png into a high-quality Windows multi-resolution icon icon.ico using Pillow at execution time.
  3. Window Icon (Runtime): Programmed app/ui.py to automatically load and display the native icon (preferring the .ico file, falling back to .png using ImageTk) on the main window title bar.
  4. Executable Icon (Windows Explorer): Configured PartsLookup.spec to use the generated icon.ico as the system icon for PartsLookup.exe under Windows File Explorer (icon="app/assets/icon.ico"), and corrected PyInstaller bundling destination paths.

4. Robust & Lock-Proof Scripting

• Improvements: build.bat and run_dev.bat auto-activate .venv or venv virtual environments, select standard python commands automatically, force-kill any running background app processes to prevent PermissionErrors, and prompt users with a retry dialog if the output folder is locked by an open File Explorer window.

5. Stamps.com Shipping Integration Research

• Request: Investigate the feasibility of adding Stamps.com connectivity to the Shipping Tab.
• Result: Conducted research and compiled a detailed report at C:\Users\mario\.gemini\antigravity\brain\b9bbe4ff-e586-4a85-a0b8-98f43d9ac965\stamps_integration_research.md. It outlines direct API integration (REST/SOAP) and compares it to highly recommended middleware multi-carrier APIs (EasyPost/Shippo) with Python code blocks, Mermaid architecture diagrams, and development roadmap stages.

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How to Verify

1. Run development server:

   run_dev.bat
   

2. Build standalone executable:

   build.bat
   

3. Verify that dist\PartsLookup\PartsLookup.exe displays the custom icon in Windows Explorer, and the running window displays the icon on the top-left taskbar natively.