Add Authier logo

[capaj]

Summary

• Add Authier metadata and canonical homepage.
• Add the required transparent icon and 120×60 rectangle variants, plus the official square logo.
• Convert the Inter wordmark to paths so the SVG is self-contained.

Provenance and disclosure

I maintain Authier. The key artwork is derived from the official public source linked in the metadata. The rectangle wordmark uses Inter Bold converted to curves. This contribution was prepared with AI assistance and manually reviewed against the rendered catalogue page.

Validation

• fflint metadata check: passed

• fflint icon and rectangle dimension checks: passed

• SVG image and filename checks: passed

• npm run build: passed (10,264 pages, including Authier)

• images follow the style guidelines

[capaj]

CI note: the metacheck job exits before checking this contribution because bin/chkmetalink.py cannot find the repository-level www/_data/socialmedia.yaml file. The four asset-specific checks pass. I also ran the current fflint metadata check locally against src/content/logos/authier/index.md, where it passed 1/1.