Ekklesia had no notion of a module being on or off: the accepted module set
was exactly "whatever discovery found on disk", and `ModuleLifecycleStage`
named nine states nothing produced or consumed. This replaces that vocabulary
with two axes that real code produces — persistent, administrator-owned
configuration (`enabled`/`disabled`) and per-boot runtime observation
(`running`/`disabled`/`blocked`) — and wires them through startup.
- One Core table (`ekklesia_core_module_state`, migration 0004) holding only
`module_id` and `enabled`. A module with no record is enabled by default, so
deploying a module is still sufficient to run it and discovery never needs an
initialization write. A record for an undeployed module is retained and
ignored, so redeploying restores the decision.
- `resolveModuleEligibility` is pure: a disabled module transitively blocks
every module that *requires* it (module and capability edges alike) with a
structured reason naming the provider; optional dependencies never block; and
a missing, incompatible, or cyclic dependency stays discovery's concern.
- `startApi` starts only the eligible set and builds the UI publication
registry from that same list, so routes, artifacts, browser inventory, and
Dashboard navigation all follow one authoritative set. A disabled module is
never imported, so there is no per-request enablement check anywhere.
- Startup stays all-or-nothing, deliberately; there is consequently no `failed`
runtime state. `pnpm modules:enable`/`modules:disable` is the out-of-band
recovery path for a module that breaks startup.
- Changes take effect at the next start, and the read model reports
configuration, runtime, and `restartRequired` separately rather than claiming
a module stopped when it has not.
- Migration participation and permission composition still span the deployed
and discovered inventories respectively, unchanged.
- New restricted platform permission `core.modules.lifecycle.manage` gates both
reading and changing enablement, at a sibling prefix (`/api/v1/module-lifecycle`)
that cannot collide with the module route namespace.
- `pnpm doctor` gains a `modules.lifecycle` check so "why is this module
unavailable?" is answerable without reading logs.
See ADR 0028.
Co-Authored-By: Claude Opus 5 <[email protected]>
