[bercedev]

Closes #2052

Adds Tesseract, the Matrix client, as tesseract-matrix. That's the Package name in the upstream .deb (Tesseract-0.9.4-Linux.deb), and it keeps clear of the tesseract-ocr packages in the archive.

• GitHub releases from surakin/tesseract, latest. Upstream has shipped a stable (non-prerelease) .deb with every release, most recently v0.9.4 on 2026-10-18.
• Only an amd64 .deb is published, so ARCHS_SUPPORTED="amd64".
• VERSION_PUBLISHED comes from the tag (v0.9.4 → 0.9.4), which matches the Version field in the .deb, so deb-get update won't keep offering the same release.

How I tested it, in an Ubuntu 24.04 container, with the manifest and packages from this branch in /etc/deb-get and the release JSON pre-filled in the cache, so nothing was fetched:

$ deb-get show tesseract-matrix
Tesseract
  Package:	tesseract-matrix
  Repository:	01-main
  Updater:	deb-get
  Installed:	No
  Published:	0.9.4
  Architecture:	amd64
  Download:	https://github.com/surakin/tesseract/releases/download/v0.9.4/Tesseract-0.9.4-Linux.deb
  Website:	https://github.com/surakin/tesseract
  Summary:	Matrix client built on the Matrix Rust SDK.

deb-get list and prettylist include it too. apt-get install -s on the downloaded .deb resolves all its dependencies (Qt 6) on both 24.04 and 22.04. README.md is left for you to regenerate, as CONTRIBUTING asks.

[cubic-dev-ai]

No issues found across 2 files

Confidence score: 5/5

• Automated review surfaced no issues in the provided summaries.
• No files require special attention.

<sub>Requires human review: Adds a new deb-get manifest for Tesseract Matrix client, pulling an amd64 .deb from GitHub releases. New third-party installable source in the catalog needs maintainer sign-off on supply-chain trust and release assumptions.

Re-trigger cubic</sub>