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Amends 0086.

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Context

0086 made every channel free. The owner’s notification answers N3 to N5, B36 (mem L686–688, L696–697, 2026-10-20) add channels, cascading templates, manual sends and where preferences live.

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Decision

  1. Channels (N3). Adds Unifonic and Taqnyat for SMS, the WhatsApp Cloud API, web push with VAPID, voice through Twilio, and chat apps (Slack, Teams and Telegram).
  2. Single layer (N4). Notifications is the one delivery layer. Every channel goes through it.
  3. Templates (N5). Templates come from code defaults, then tenant overrides, then a console editor. The cascade follows the scope chain.
  4. Manual sends. A person can send a notification at any scope, with guardrails. The permission notifications.message.send is never granted by default.
  5. Preferences (B36). Notification preferences live in the notifications package, an exception to the settings rule (ADR 0213).
  6. Spec location. The notifications spec lives at .agents/specs/sta-35-notifications.

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Consequences

  • A tenant can change a template without a deploy, and the default is always there.
  • A manual send is a permission grant, so it can be audited and revoked.

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Enforcement

planned — the cascade test covers code default, tenant override and console edit; the default-deny of notifications.message.send is checked by the permission catalogue.

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Supersedes and sources

Supersedes: none. Amends: 0086. Sources: owner notification answers N3–N5, B36 (stackra-decisions-2026-10-19.md L686–688, L696–697, 2026-10-20). Closes gap B9 (spec path).