refactor: untangle remaining plugin sdk boundaries

src/plugin-sdk/conversation-runtime.ts

@@ -0,0 +1,41 @@
+// Public pairing/session-binding helpers for plugins that manage conversation ownership.
+
+export * from "../acp/persistent-bindings.route.js";
+export {
+  type BindingStatus,
+  type BindingTargetKind,
+  type ConversationRef,
+  SessionBindingError,
+  type SessionBindingAdapter,
+  type SessionBindingAdapterCapabilities,
+  type SessionBindingBindInput,
+  type SessionBindingCapabilities,
+  type SessionBindingPlacement,
+  type SessionBindingRecord,
+  type SessionBindingService,
+  type SessionBindingUnbindInput,
+  getSessionBindingService,
+  isSessionBindingError,
+  registerSessionBindingAdapter,
+  unregisterSessionBindingAdapter,
+} from "../infra/outbound/session-binding-service.js";
+export * from "../pairing/pairing-challenge.js";
+export * from "../pairing/pairing-messages.js";
+export * from "../pairing/pairing-store.js";
+export {
+  buildPluginBindingApprovalCustomId,
+  buildPluginBindingDeclinedText,
+  buildPluginBindingErrorText,
+  buildPluginBindingResolvedText,
+  buildPluginBindingUnavailableText,
+  detachPluginConversationBinding,
+  getCurrentPluginConversationBinding,
+  hasShownPluginBindingFallbackNotice,
+  isPluginOwnedBindingMetadata,
+  isPluginOwnedSessionBindingRecord,
+  markPluginBindingFallbackNoticeShown,
+  parsePluginBindingApprovalCustomId,
+  requestPluginConversationBinding,
+  resolvePluginConversationBindingApproval,
+  toPluginConversationBinding,
+} from "../plugins/conversation-binding.js";