refactor: rename aris to aelis (#59)

Rename all references across the codebase: package names,
imports, source IDs, directory names, docs, and configs.

Co-authored-by: Ona <no-reply@ona.com>

packages/aelis-core/src/index.ts

@@ -0,0 +1,50 @@
+// Context
+export type { ContextEntry, ContextKey, ContextKeyPart } from "./context"
+export { Context, contextKey, serializeKey } from "./context"
+
+// Actions
+export type { ActionDefinition } from "./action"
+export { UnknownActionError } from "./action"
+
+// Feed
+export type { FeedItem, FeedItemSignals, Slot } from "./feed"
+export { TimeRelevance } from "./feed"
+
+// Feed Source
+export type { FeedSource } from "./feed-source"
+
+// Feed Post-Processor
+export type { FeedEnhancement, FeedPostProcessor, ItemGroup } from "./feed-post-processor"
+
+// Feed Engine
+export type { FeedEngineConfig, FeedResult, FeedSubscriber, SourceError } from "./feed-engine"
+export { FeedEngine } from "./feed-engine"
+
+// =============================================================================
+// DEPRECATED - Use FeedSource + FeedEngine instead
+// =============================================================================
+
+// Data Source (deprecated - use FeedSource)
+export type { DataSource } from "./data-source"
+
+// Context Provider (deprecated - use FeedSource)
+export type { ContextProvider } from "./context-provider"
+
+// Context Bridge (deprecated - use FeedEngine)
+export type { ProviderError, RefreshResult } from "./context-bridge"
+export { ContextBridge } from "./context-bridge"
+
+// Reconciler (deprecated - use FeedEngine)
+export type {
+	ReconcileResult,
+	ReconcilerConfig,
+	SourceError as ReconcilerSourceError,
+} from "./reconciler"
+export { Reconciler } from "./reconciler"
+
+// Feed Controller (deprecated - use FeedEngine)
+export type {
+	FeedControllerConfig,
+	FeedSubscriber as FeedControllerSubscriber,
+} from "./feed-controller"
+export { FeedController } from "./feed-controller"