Diagnostics

Compiler diagnostics AV001 through AV010 reported by the Archevolt generator.

All generator diagnostics are errors except AV008, which is a warning. Runtime descriptor composition also rejects invalid metadata and dependencies.

Code	Contract
`AV001`	Invalid partial declaration, containing owner, or generated member shape.
`AV002`	Unsupported managed or owning component, bundle, resource, or message type.
`AV003`	Duplicate fields or members, conflicting query terms, or contradictory membership.
`AV004`	Mutable query, resource, message, or command capabilities overlap.
`AV005`	Unsupported system signature, parameter, method shape, or tag value access.
`AV006`	Change filter references an untracked component.
`AV007`	Unknown or ambiguous system, condition, group, dependency, duplicate order or key, or schedule cycle.
`AV008`	Conflicting systems have no explicit dependency. The planner supplies a conservative order.
`AV009`	Missing or incompatible module or system metadata, registration, or export.
`AV010`	Unsafe partition request or condition capability.

Common fixes

AV001. Make the declaration and every containing type partial, and make containing types non-generic.
AV002. Use unmanaged structs for components. Use a managed resource for reference types.
AV004. Prove that mutable queries cannot overlap with With<T> and Without<T>, or split the work into separate systems. See Queries and filters.
AV006. Add [TrackChanges] to the component or resource. See Change tracking.
AV007. Check Before, After, Order, and instance keys on your Run declarations.
AV008. Add an explicit Before or After dependency between the two systems.