export type SessionStatus = 'active' | 'paused' | 'completed' | 'error' | 'archived';
export declare function buildRuntimeSessionIri(sessionId: string): string;
export declare function extractRuntimeSessionId(sessionRef: string | null | undefined): string | null;
export declare function extractSessionIdFromSessionRef(sessionRef: string | null | undefined): string | null;
/**
 * Runtime / collaboration session resource.
 *
 * This preserves generic AI product runtime/session lifecycle state.
 * It is intentionally separate from:
 * - UI-only local state (focus, draft text, scroll position, expand/collapse)
 * - transient transport/session-manager internals
 * - the durable conversation timeline, which is Thread
 *
 * Storage structure:
 * - Location: /.data/sessions/{yyyy}/{MM}/{dd}/{id}.ttl
 * - Primary use: runtime lifecycle projection for a concrete Thread
 *
 * Contract notes:
 * - Chat identifies the counterpart/conversation object.
 * - Thread identifies the concrete conversation timeline/place/run. AI product
 *   runtime sessions map to Thread; this Session resource records lifecycle state
 *   and points to that Thread.
 * - Conversation topology such as direct/group is not a Session field. It is
 *   derived from the Chat/Thread surface, participants, or product policy. Legacy
 *   `udfs:conversationType` data should be treated as deprecated compatibility
 *   metadata, not written by new code.
 * - `archived` is a persistence-layer/session-lifecycle status; interactive runtime
 *   surfaces may continue to use the narrower active/paused/completed/error subset
 *   until they explicitly adopt archival semantics.
 * - `tool` is intentionally open-string in this baseline so the durable resource does not
 *   prematurely overfit to today's sidecar enum before all writers are aligned.
 */
export declare const sessionResource: import("@undefineds.co/drizzle-solid/dist/core/schema").PodTableWithColumns<import("@undefineds.co/drizzle-solid/dist/core/schema").ResolvedColumns<{
    id: import("@undefineds.co/drizzle-solid/dist/core/schema").PodStringColumn<false, false>;
    owner: import("@undefineds.co/drizzle-solid/dist/core/schema").ColumnBuilder<"uri", null, true, false>;
    chat: import("@undefineds.co/drizzle-solid/dist/core/schema").ColumnBuilder<"uri", null, false, false>;
    thread: import("@undefineds.co/drizzle-solid/dist/core/schema").ColumnBuilder<"uri", null, false, false>;
    status: import("@undefineds.co/drizzle-solid/dist/core/schema").ColumnBuilder<"string", null, true, true>;
    tool: import("@undefineds.co/drizzle-solid/dist/core/schema").ColumnBuilder<"string", null, false, false>;
    tokenUsage: import("@undefineds.co/drizzle-solid/dist/core/schema").ColumnBuilder<"integer", null, false, true>;
    messages: import("@undefineds.co/drizzle-solid/dist/core/schema").ColumnBuilder<"array", "uri", false, false>;
    policy: import("@undefineds.co/drizzle-solid/dist/core/schema").ColumnBuilder<"uri", null, false, false>;
    policyVersion: import("@undefineds.co/drizzle-solid/dist/core/schema").ColumnBuilder<"string", null, false, false>;
    metadata: import("@undefineds.co/drizzle-solid/dist/core/schema").ColumnBuilder<"object", null, false, false>;
    createdAt: import("@undefineds.co/drizzle-solid/dist/core/schema").ColumnBuilder<"datetime", null, true, true>;
    updatedAt: import("@undefineds.co/drizzle-solid/dist/core/schema").ColumnBuilder<"datetime", null, true, true>;
    archivedAt: import("@undefineds.co/drizzle-solid/dist/core/schema").ColumnBuilder<"datetime", null, false, false>;
}>>;
export declare const sessionTable: import("@undefineds.co/drizzle-solid/dist/core/schema").PodTableWithColumns<import("@undefineds.co/drizzle-solid/dist/core/schema").ResolvedColumns<{
    id: import("@undefineds.co/drizzle-solid/dist/core/schema").PodStringColumn<false, false>;
    owner: import("@undefineds.co/drizzle-solid/dist/core/schema").ColumnBuilder<"uri", null, true, false>;
    chat: import("@undefineds.co/drizzle-solid/dist/core/schema").ColumnBuilder<"uri", null, false, false>;
    thread: import("@undefineds.co/drizzle-solid/dist/core/schema").ColumnBuilder<"uri", null, false, false>;
    status: import("@undefineds.co/drizzle-solid/dist/core/schema").ColumnBuilder<"string", null, true, true>;
    tool: import("@undefineds.co/drizzle-solid/dist/core/schema").ColumnBuilder<"string", null, false, false>;
    tokenUsage: import("@undefineds.co/drizzle-solid/dist/core/schema").ColumnBuilder<"integer", null, false, true>;
    messages: import("@undefineds.co/drizzle-solid/dist/core/schema").ColumnBuilder<"array", "uri", false, false>;
    policy: import("@undefineds.co/drizzle-solid/dist/core/schema").ColumnBuilder<"uri", null, false, false>;
    policyVersion: import("@undefineds.co/drizzle-solid/dist/core/schema").ColumnBuilder<"string", null, false, false>;
    metadata: import("@undefineds.co/drizzle-solid/dist/core/schema").ColumnBuilder<"object", null, false, false>;
    createdAt: import("@undefineds.co/drizzle-solid/dist/core/schema").ColumnBuilder<"datetime", null, true, true>;
    updatedAt: import("@undefineds.co/drizzle-solid/dist/core/schema").ColumnBuilder<"datetime", null, true, true>;
    archivedAt: import("@undefineds.co/drizzle-solid/dist/core/schema").ColumnBuilder<"datetime", null, false, false>;
}>>;
export type SessionRow = typeof sessionResource.$inferSelect;
export type SessionInsert = typeof sessionResource.$inferInsert;
export type SessionUpdate = typeof sessionResource.$inferUpdate;