docs: make technical prose concrete

packages/session/session-projection/src/index.ts

@@ -65,7 +65,7 @@ export interface ProjectionDefinition<K extends keyof SessionProjectionMap, S> {
    */
   view(state: S): SessionProjectionMap[K]
   /**
-   * Persisted-cache invalidation anchor: bump whenever the state shape or the
+   * Persisted-cache invalidation version: bump whenever the serialized state fields or the
    * fold semantics change, so persisted `(sessionId, key, ver, seq, val)`
    * rows from an older unit are discarded instead of being forward-applied
    * into garbage. Non-negative integer.
@@ -188,7 +188,7 @@ export class SessionProjectionRegistry extends Service {
    * context's fiber: disposing the fiber (or calling the returned disposer)
    * removes the key — and the unit's cached cells — from subsequent drives
    * and snapshots.
-   * @param definition - key, boundary schema, pure unit functions, and stateVersion.
+   * @param definition - key, state schema, pure unit functions, and stateVersion.
    * @returns the exact disposer that unregisters this unit.
    */
   register<K extends keyof SessionProjectionMap, S>(definition: ProjectionDefinition<K, S>): () => void {