The problem starts when something changes.
A system can know who logged in and still lose track of what that person authorized. An agent can hand work to another agent. A video call can become a recorded response. A processing job can move to a different provider or jurisdiction. The connection may survive while the authority governing the undertaking fragments.
The invariant, in plain language
An invariant is a rule that must remain true even when the system changes. Here, the governing authority must remain controlling through the change. A second, independent authority must not quietly replace it, and the resulting state must carry evidence of the authority under which it became valid.
In the owner’s architectural formulation: provable authority before, during, and after the transition, bound to the record as the state transition becomes authoritative.
Why this is not just video voicemail or waiting-room advertising
Those are applications in which the problem becomes concrete. Hermes-Echo addresses missed-call media and messaging within a session. Warten addresses content and activity before admission. The application tells you what happens. The architectural question is what remains in control while it happens.
The ten coordinated filings address different functions around that question, from accessibility and AI routing to compute placement, provenance, residency, and trust.
What continuity means
A session is a bounded span of an undertaking, not a claim about how long a connection must remain open. One material change can raise the authority question. All ten family functions need not be active together.
Delegation and handoff are not excluded simply because another component participates. The question is whether its authority remains derived from and constrained by the governing undertaking.
A log after the event is not the same as a controlling decision before the change. Nor does an architectural explanation establish that a particular product implements the invention or falls within a particular patent claim.