1 files changed, 26 insertions, 0 deletions
diff --git a/crates/fidget-spinner-core/src/lib.rs b/crates/fidget-spinner-core/src/lib.rs
new file mode 100644
index 0000000..f368268
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+++ b/crates/fidget-spinner-core/src/lib.rs
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+//! Core domain types for the Fidget Spinner frontier machine.
+//!
+//! The product direction is intentionally local-first and agent-first: the DAG
+//! is the canonical truth, while frontier state is a derived operational
+//! projection over that graph. The global spine is intentionally narrow so
+//! projects can carry richer payloads and annotations without fossilizing the
+//! whole system into one universal schema.
+
+mod error;
+mod id;
+mod model;
+
+pub use crate::error::CoreError;
+pub use crate::id::{
+    AgentSessionId, AnnotationId, ArtifactId, CheckpointId, ExperimentId, FrontierId, NodeId, RunId,
+};
+pub use crate::model::{
+    AdmissionState, AnnotationVisibility, ArtifactKind, ArtifactRef, CheckpointDisposition,
+    CheckpointRecord, CheckpointSnapshotRef, CodeSnapshotRef, CommandRecipe, CompletedExperiment,
+    DagEdge, DagNode, DiagnosticSeverity, EdgeKind, EvaluationProtocol, ExecutionBackend,
+    ExperimentResult, FieldPresence, FieldRole, FrontierContract, FrontierNote, FrontierProjection,
+    FrontierRecord, FrontierStatus, FrontierVerdict, GitCommitHash, InferencePolicy, JsonObject,
+    MetricObservation, MetricSpec, MetricUnit, NodeAnnotation, NodeClass, NodeDiagnostics,
+    NodePayload, NodeTrack, NonEmptyText, OptimizationObjective, PayloadSchemaRef,
+    ProjectFieldSpec, ProjectSchema, RunRecord, RunStatus, ValidationDiagnostic,
+};