refactor: Convert to UV Python project with proper package structure

- Restructured project to use src/stocktool package layout
- Migrated to UV for dependency management
- Added pyproject.toml with all dependencies (sv-ttk, pillow, requests, pyyaml)
- Organized test files into tests/ directory
- Updated .gitignore for UV projects
- Comprehensive README with installation and usage instructions
- Removed old unused files (main.py, stock_tool_gui.py, duplicate copy)
- Added CLI entry point: stock-tool command

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

PUSH_TO_GITEA.txt

@@ -0,0 +1,58 @@
+================================================================================
+QUICK START: Push to Gitea
+================================================================================
+
+Your repository is initialized and ready! Here's what to do:
+
+1. CREATE REPOSITORY ON GITEA
+   - Go to your Gitea instance
+   - Click "New Repository"
+   - Name: inventree-stock-tool (or your choice)
+   - Do NOT initialize with README (we already have one)
+   - Click "Create Repository"
+
+2. ADD GITEA REMOTE
+   Gitea will show you a URL like:
+   https://gitea.yourcompany.com/username/inventree-stock-tool.git
+
+   Run this command (replace with your actual URL):
+
+   cd "C:\Users\berwn\Desktop\barcodes\stocktool"
+   git remote add origin https://gitea.yourcompany.com/username/inventree-stock-tool.git
+
+3. PUSH TO GITEA
+
+   git push -u origin master
+
+   Enter your Gitea username and password when prompted.
+
+4. VERIFY
+   Open your Gitea repository in a browser - you should see all files!
+
+================================================================================
+Current Repository Status
+================================================================================
+
+Location: C:\Users\berwn\Desktop\barcodes\stocktool
+Branch: master
+Commits: 2
+
+Files tracked:
+- stock_tool_gui_v2.py (main application)
+- README.md (documentation)
+- FIXES_APPLIED.md (bug fix details)
+- GITEA_SETUP.md (detailed instructions)
+- example_config.yaml (config template)
+- .gitignore (git configuration)
+- test_*.py (4 test files)
+
+Files excluded (in .gitignore):
+- *.yaml (except example_config.yaml) - protects credentials
+- __pycache__/
+- *.pyc
+- Virtual environments
+- IDE files
+
+================================================================================
+For detailed instructions, see: GITEA_SETUP.md
+================================================================================