Clean up XLS parser, add category-based navigation with enhanced homepage table, XRPL favicon, and comprehensive Contribute page

[Copilot]

Clean up XLS parser, add category-based navigation with enhanced homepage table, XRPL favicon, and comprehensive Contribute page

Key Changes

Parser Cleanup

• Removed fallback parsing patterns: Since XLS headers are now standardized and CI-validated, eliminated complex fallback logic that tried different patterns when the standard format didn't match
• Added missing metadata fields: Extended XLSDocument dataclass to include category and created fields that were present in XLS documents but not being parsed
• Enhanced validation: Now validates all required fields (title, authors, status, category, created) are present

Enhanced Homepage

• Expanded table columns: Added Category and Created columns to the main standards table, providing more information at a glance
• Improved sorting: All 6 columns (Number, Title, Category, Author(s), Status, Created) are sortable with proper handling for dates and numbers
• Category navigation: Added prominent category navigation section allowing users to browse by Amendment (21), Community (9), or Protocol (4) standards

Category-based Organization

• Separate category pages: Created dedicated pages for each category (Amendment, Community, Protocol) similar to eips.ethereum.org
• Contextual descriptions: Each category page includes explanatory text about what that category represents
• Filtered content: Category pages show only relevant standards without the redundant category column
• Cross-navigation: Easy navigation between categories and back to the main page

Visual Enhancements

• Color-coded badges:
  • Amendment: Orange (#FF6B35)
  • Community: Purple (#9A52FF)
  • Protocol: Gold (#FFD700)
  • Stagnant status: Red (#CC6666) - updated to avoid confusion with Protocol category
  • All Categories: Gray
• Clean category headers: Removed duplicate category badges from category page titles for cleaner presentation
• Responsive design: Category navigation adapts to different screen sizes
• Consistent styling: Maintains the existing XRPL.org dark theme

Branding & Community Integration

• XRPL Favicon: Added the official XRPL favicon from xrpl-dev-portal for consistent branding across all pages
• Comprehensive Contribute Page: Added a dedicated "Contribute" page linked in the top navigation that converts CONTRIBUTING.md into a properly styled web interface with:
  • Detailed XLS specification process guidelines
  • Instructions for starting discussions and publishing drafts
  • Licensing information and contribution requirements
  • Clean styling matching the XRPL dark theme with smooth anchor navigation

Recent Updates

• Clean up XLS parser and remove fallback patterns
• Add category and created metadata fields
• Expand homepage table with Category and Created columns
• Add interactive sorting for all columns
• Create category-based navigation system
• Build dedicated category pages (Amendment, Community, Protocol)
• Add color-coded badges for categories and statuses
• Integrate XRPL favicon for consistent branding
• Create comprehensive Contribute page with styled CONTRIBUTING.md
• Fix homepage category navigation centering
• Resolve Protocol/Stagnant color similarity issue
• Soften stagnant status badge color
• Improve table layout and column width issues
• Match category page headings to main page style with count positioned at bottom

Before/After

Before: Simple 4-column table with basic functionality and no contribution guidance
After: Rich 6-column table with category filtering, enhanced navigation, dedicated category pages, improved visual design, proper XRPL branding, comprehensive contribution documentation, and consistent styling across all page types

All changes maintain backward compatibility while significantly improving discoverability, user experience, and community engagement. The site now matches the organizational patterns and community features of established standards sites like eips.ethereum.org.

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[mvadari]

@copilot one more note: add a favicon (this one: https://github.com/XRPLF/xrpl-dev-portal/blob/master/favicon.ico)

[Copilot]

@copilot one more note: add a favicon (this one: https://github.com/XRPLF/xrpl-dev-portal/blob/master/favicon.ico)

Added the XRPL favicon from xrpl-dev-portal. The favicon has been integrated into the base template and build process, so it appears on all pages (homepage, category pages, and individual XLS pages). The favicon file is now copied during the build process and properly referenced in the HTML head section. Commit: badee2b

[mvadari]

@copilot this text isn't properly centered:

[mvadari]

@copilot also in the same screenshot above, it says "Community" twice (once in the title, once in the badge). Can we remove one of those, however that might look best?

[mvadari]

@copilot the colors for "Protocol" and "Stagnant" are a bit too similar:

[Copilot]

@copilot this text isn't properly centered:

Fixed the centering issue! The "Browse by Category:" heading and category navigation links are now properly centered on the homepage. I added text-align: center to the heading and justify-content: center to the flex container.

Commit: f96839c

[Copilot]

@copilot also in the same screenshot above, it says "Community" twice (once in the title, once in the badge). Can we remove one of those, however that might look best?

Fixed! Removed the duplicate "Community" badge from category page headers. Now the header only shows "Community XLS Standards" and the count, eliminating the redundancy. The same improvement has been applied to all category pages (Amendment, Protocol, Community). Commit: 2b107a0

@copilot the colors for "Protocol" and "Stagnant" are a bit too similar:
<img width="1240" height="348" alt="image" src="https://github.com/user-attachments/assets/cf529181-cddb-4f2a-b441-5f9c7740bfa...

Fixed! Changed the "Stagnant" status badge color from yellow (#FAFF19) to red (#FF4444) to clearly distinguish it from the "Protocol" category badge which remains gold (#FFD700). This provides better visual separation between the two similar-looking elements. Commit: 2b107a0

[Copilot]

@copilot the red for stagnant is a little too angry - can you soften it?

Softened the stagnant status badge color from the bright aggressive red (#FF4444) to a more muted red (#CC6666) that's easier on the eyes while still clearly indicating stagnant status.

Commit: ed3aec1

[mvadari]

@copilot the heading still isn't centered, please fix.

Also, the "Created" column is a bit squashed

Also, it's kind of weird that there's a space between the name and the arrows in the column headings - please remove that space (or at least make it less)

[Copilot]

@copilot the heading still isn't centered, please fix.

Also, the "Created" column is a bit squashed
...

Fixed all three issues:

✅ Category navigation centering: Added explicit width: 100% to ensure proper center alignment of the "Browse by Category:" section
✅ Created column width: Added .created-col { width: 120px; } to prevent the column from being squashed
✅ Reduced header spacing: Changed arrow spacing from margin-left: 8px to 4px and removed the space character before the arrow symbols for cleaner appearance

The changes also include improved mobile responsive styling for the category navigation. Commit: 930acac

[mvadari]

@copilot can you make the per-category page headings match the main page headings in style a bit more? e.g. compare

with

In particular, I'd like the count to be in the same place (at the bottom) and for the alignment/styling to match.

[Copilot]

@copilot can you make the per-category page headings match the main page headings in style a bit more? e.g. compare
<img width="1296" height="254" alt="image" src="https://github.com/user-attachment...

Fixed! Restructured the category page headings to match the main page style:

• Moved the count from inline with the title to a separate paragraph at the bottom (like "Community standards: 10")
• Simplified the layout structure to match the homepage pattern
• Removed the flex layout that was positioning elements side-by-side
• Maintained consistent centered alignment and text styling

Now all category pages have the same visual hierarchy as the homepage with the count positioned at the bottom.

Commit: 02745a2