Sovereign, and honestly so
The estate's word for sovereignty has exactly one meaning: nothing anyone else can withdraw. It has never meant "every line is ours". It means that every dependency gets a verdict, owned, borrowed and pinned, or vendored with the code, and that the verdict is written down where you can read it.
Technically yours
The platform is public under the MIT licence. Your worlds, your rules, your courses and your agents are plain-text files in folders you keep. The engine's source is in the repository and builds for Windows, Linux and macOS. There is no account to create, no licence per seat, and nothing on this site is loaded from a network: it opens from a folder on a laptop.
Educationally yours
The course is plain text, in four languages (three of them drafts, not yet reviewed), in the same repository. An institution adapts it with an overlay folder, never a fork, and keeps every learner's progress as a text file it can read forever. A pass is proven by the fingerprint of the work handed in, not by a server anyone else runs. No institution has adopted it yet.
Honest about lock-in
Every platform is a commitment, and this site does not pretend otherwise. What it promises is that the commitment is readable: open formats, open code, open course, and a verdict per dependency. Leaving costs a copy, not a negotiation. The remaining limits are written on this site rather than hidden: Haro is in construction, two areas of the Atlas are absent by design, and no customer yet runs the declared machine in production.
The Softanza way "The data stays here" is not a sentence in a contract; it is a property of a system whose every piece you can read, build and move.
The definition and the verdict table: the Harobanda site, pages "sovereign" and "status" (github.com/mayouni/harobanda(opens in a new tab)); the licence: LICENSE(opens in a new tab); the overlay rule: OVERLAY_GUIDE.md(opens in a new tab); the evidence rule: CHARTER.md(opens in a new tab), section 5.6.