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Fails CI if any future VM regresses to the pre-migration pattern of owning independent MutableStateFlow read-state. Two assertions: 1. every_read_state_vm_accepts_iDataManager_ctor_param Scans composeApp/src/commonMain/kotlin/com/tt/honeyDue/viewmodel/ and requires every VM to either declare `dataManager: IDataManager` as a constructor param or be in WORKFLOW_ONLY_VMS allowlist (currently TaskCompletion, Onboarding, PasswordReset). 2. read_state_flows_should_be_derived_not_independent Flags any `private val _xxxState = MutableStateFlow(...)` whose field-name prefix isn't on the mutation-feedback allowlist (create/ update/delete/toggle/…). Read-state MUST derive from DataManager via .map + .stateIn pattern. AuthViewModel file-level allowlisted (every one of its 11 states is legitimate one-shot mutation feedback). Paired stub in commonTest documents the rule cross-platform; real scan lives in androidUnitTest where java.io.File works. Runs with ./gradlew :composeApp:testDebugUnitTest --tests "*architecture*". See docs/parity-gallery.md "Known limitations" for the history of the Dec 3 2025 partial migration this gate prevents regressing. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>