perf(plugin-sdk): split channel secret runtime helpers

src/plugin-sdk/channel-secret-basic-runtime.ts

@@ -0,0 +1,29 @@
+// Narrow shared secret-contract exports for non-TTS channel/plugin secret surfaces.
+
+export {
+  collectConditionalChannelFieldAssignments,
+  collectNestedChannelFieldAssignments,
+  collectSimpleChannelFieldAssignments,
+  getChannelRecord,
+  getChannelSurface,
+  hasConfiguredSecretInputValue,
+  isBaseFieldActiveForChannelSurface,
+  normalizeSecretStringValue,
+  resolveChannelAccountSurface,
+} from "../secrets/channel-secret-basic-runtime.js";
+export type {
+  ChannelAccountEntry,
+  ChannelAccountPredicate,
+  ChannelAccountSurface,
+} from "../secrets/channel-secret-basic-runtime.js";
+export {
+  collectSecretInputAssignment,
+  hasOwnProperty,
+  isEnabledFlag,
+  pushAssignment,
+  pushInactiveSurfaceWarning,
+  pushWarning,
+} from "../secrets/runtime-shared.js";
+export type { ResolverContext, SecretDefaults } from "../secrets/runtime-shared.js";
+export { isRecord } from "../secrets/shared.js";
+export type { SecretTargetRegistryEntry } from "../secrets/target-registry-types.js";