ADR 0019 gets "The final reading (22 Oct 2026)": what decides a key is
bound into what is sealed or signed, the walk up the tree, a device
without the keys writing nothing, settings' newest versions and Count me
folding off-wins, publishing and Finish as shown, the rewrites; the
hostile-instance test, its invariant and what it found, on the final code
and on the code before; the residual risks as they stand. Learn's
AGENTS.md gets the rule that every column deciding a key is bound into
what is sealed or signed, and the test.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Signed-off-by: Tizian 「ティツィアーン」 <raisondetredev@pm.me>
Publishing is refused on the device where anything in the tree is sealed,
before any tag's name goes out: the tree and the tags' links are the
instance's to change. A suggestion leaves sealed files out, as the
instance could name another private tree's file through a planted row.
Docs: ADR 0019's "The short reading (22 Oct 2026)", and the general
residual risk that any device can be held at an earlier genuine record;
Learn's AGENTS.md.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Signed-off-by: Tizian 「ティツィアーン」 <raisondetredev@pm.me>
Learn's AGENTS.md says how private studysets work (keys, the envelope,
locked rows, rewriting a tree) and what changed for the connector,
publishing, uploads and the learner count; ADR 0019 records what was built
otherwise than decided or not yet (a private studyset's files); the
halkyon_app README describes the content cipher and device keys.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Signed-off-by: Tizian 「ティツィアーン」 <raisondetredev@pm.me>
The developer's decisions of 21 Oct: private studysets ship with build 22;
a data key per private studyset and a personal key for tags and settings,
sealed to the account and kept in a synced table; files encrypted too; a
release's tag names and the copies counted come from the device; the shape,
size and rhythm of studying stay readable and are listed; existing
studysets get one offer; accounts without keys at the register wait for a
password. ADR 0002 and ADR 0017 point to it.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Signed-off-by: Tizian 「ティツィアーン」 <raisondetredev@pm.me>
