Derived-state writes should be attributed to the projection subsystem,
not to whoever triggered the upstream event. `_streakState` is local-
only today so no cross-device user-visible effect, but once any derived
table joins sync this is the only correct model.
- `markActive` and `ensureSeeded` now run under
`runAsAsync({ kind: 'system', source: 'projection' }, …)`
- Sets the pattern for future projections (DaySnapshot, correlations, …)
to follow verbatim when they start writing persistently
Closes one of the Step-1 follow-ups tracked in
COMPANION_BRAIN_ARCHITECTURE §20. Remaining:
- mana-sync Go + Postgres migration for the `actor` field
- rule-engine to wrap its future writes the same way (no writes today)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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