feat(runtime): add passive V8 Inspector observation

src/application/JavaScriptRuntimeObservationPort.ts

@@ -0,0 +1,22 @@
+import type { ExecutionOptions, ProviderIdentity } from "./AnalysisProvider.js";
+import type {
+  JavaScriptRuntimeObservation,
+  JavaScriptRuntimeTargetList,
+  ListJavaScriptRuntimeTargetsInput,
+  ObserveJavaScriptRuntimeInput,
+} from "../domain/javascriptRuntimeObservation.js";
+import type { AnalysisError } from "../domain/errors.js";
+import type { Result } from "../domain/result.js";
+
+/** Provider-neutral boundary for passive Node/Electron Inspector observation. */
+export interface JavaScriptRuntimeObservationPort {
+  identity(): ProviderIdentity;
+  listTargets(
+    input: ListJavaScriptRuntimeTargetsInput,
+    options?: ExecutionOptions,
+  ): Promise<Result<JavaScriptRuntimeTargetList, AnalysisError>>;
+  observe(
+    input: ObserveJavaScriptRuntimeInput,
+    options?: ExecutionOptions,
+  ): Promise<Result<JavaScriptRuntimeObservation, AnalysisError>>;
+}