Fix base template substitution and improve tool/op formatting in sanity report, also update HTML/CSS and image handling.
- Major HTML/CSS refactor for CAM Sanity Report template:
- Rewrote HTMLTemplate.py with modern, responsive CSS, semantic HTML, and accessibility improvements.
- Added CSS reset, responsive image handling, and improved table/list styling.
- Introduced .heading-container and .top-link for right-aligned "Top" navigation links on all major sections and tool headers (hidden in print).
- Updated all section and tool headers to use new navigation and layout.
- Cleaned up legacy markup, removed inline styles, and standardized variable substitution using string.Template syntax (${key}, ${val}).
- Updated base_template in HTMLTemplate.py to use string.Template syntax (${key}, ${val}) instead of %{key}, %{val} for correct variable substitution.
- Enhanced image generation and embedding:
- Updated ImageBuilder to support high-DPI (800x800) images and direct byte output for embedding.
- All report images (base, stock, datum, tool) now use in-memory bytes for embedding when possible.
- Tool images support a toggle for using toolbit thumbnails or fallback head-on renders.
- ReportGenerator now embeds images as base64 when requested, with correct HTML tags.
- Improved squawk, tool, and operation data formatting:
- Squawk dates now use localized string formatting.
- Tool diameter and feedrate now use .UserString for better display.
- Spindle speed now formatted as integer with "rpm" suffix.
- Operation feed and speed values also use .UserString and "rpm" formatting.
- Fixed _format_bases in ReportGenerator.py to iterate over base_data.items() and pass {"key": key, "val": val} to the template, ensuring all bases are listed correctly.
- General code cleanup and improved maintainability throughout the CAM Sanity reporting stack.
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