[WIP] Update template layout and address linting feedback

[Copilot]

• Understand the repository structure and linting tools
• Run existing linters (Rector, PHPCS, Pint) on the template files
• Fix inconsistencies in translation function usage (trans() vs lang())
  • Replaced all lang() calls with trans() for consistency
  • Fixed hardcoded "Invoiced To" string in overdue template
  • Added missing invoice details section to paid template
• Remove duplicate HTML structure from public invoice template
  • Removed incomplete duplicate template (197 lines) that was accidentally added
  • Kept the complete, working template
• Additional code quality improvements
• Validate changes don't break functionality
• Final code review and security scan

---

💬 We'd love your input! Share your thoughts on Copilot coding agent in our 2 minute survey.

[coderabbitai]

Important

Review skipped

Bot user detected.

To trigger a single review, invoke the @coderabbitai review command.

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

---

_{Comment @coderabbitai help to get the list of available commands and usage tips.}