Strengthens security.txt change detection & notify

Fixes change detection would loop repeatedly
⭕️ A little ->save() vs ->update() to fix looping
📅 Last checked date-time now stores what it says
🖨️ Relevant Logs now go to the Logfile, no the CLI only

[8e98ae1] Improves recreating Sharing URLs and Subscriptions
P.s. 🏆 Boost Your Email is a TOP 1 WINNER on Open-Launch!
https://open-launch.com/projects/boost-your-email

Adds internationalisation readiness & minor fixes
🖼️ Updated Link Preview-image
🌍 Uses i18n Label service
☀️ Emails improved for light color-scheme

Signed .well-known/security.txt
✍️ How can I sign? Oh, this is how:
https://pieterbakker.com/implementing-security-txt/

Uses Plausible Analytics v2 API & cleaner Events
🔒 Privacy-first usage tracking at the core!

Adds some more data to current active monitors
📈 Not to understate the situation

Fixes adding UTMs to share, not expanding them
🔗 Sharing is caring

Adds a Status-Spinner to the Monitoring Stats
🔁 Spin, spin, spin around, spin around the clock

Makes isExpiringSoon() more accurate
It went a bit too far into the future…

Adds /deployment/notification endpoint for dplyd

[5012634] Adds blog post «Famous Emails analysed»
https://boostyour.email/blog/famous-emails-analysed-how-they-really-perform

[e388fb3] Major update 25.05.2025
Short Links for Sharing, fixes Mobile Safari Social Sharing, new Pricing, addresses a minor DOMXSS, Labels updated for SEO and functionality, Changelog update.

[09acf1e] Adds SEO IndexNow verification file

👨‍💻 Code update deployed