Diff checker column copy selection fixed

Reordered the diff checker comparison markup so selecting one side of the diff no longer pulls text from the opposite column.

Decimal / binary / hex converter added

Added a number-base converter tool for exact integer conversion between decimal, binary, and hexadecimal formats.

Five new text tools added

Added snake_case ↔ camelCase, text-to-slug, lowercase/uppercase, remove-duplicate-lines, and sort-lines tools.

Contact page added

Added a dedicated Contact page with a direct email link for questions, feedback, and support.

About page replaced with terms

Converted the About page into a minimal Terms & Conditions page and updated site navigation to match.

Three new developer tools added

Added JWT Decoder, URL Encode / Decode, and UUID Generator for common auth, debugging, and ID-generation workflows.

Feedback now routes to one Google Form

Unified bug reports, improvement requests, and tool requests under the shared feedback form and removed the email fallback path.

Main-page update notes added

Replaced the landing-page principles block with an update-note feed and linked it to the public status log.

Status page release log organized

Grouped patch and update records so deployment context and visible changes can be reviewed from one place.

Tool discovery copy refined

Tightened homepage messaging so the tools directory and quick-launch actions stay the primary entry path.

Operations messaging reduced on landing

Moved operations-heavy context away from the homepage and kept public monitoring details on the dashboard and status routes.

Status metadata card refreshed

Clarified build metadata labels to make deployment checks easier during quick reviews.