refactor(javascript): own runtime reconciliation failures

Return expected source and semantic failures from the runtime input owner as tagged Results. Bind source schema validation to concrete schemas, preserve nested active-capture paths, and let unexpected interpretation and derivation failures reach the adapter boundary.

Remove broad protocol-error wrappers, duplicate active identity validation, and redundant JSON result parsing. Migrate parsed-fact consumers and retain CLI/MCP contracts. Relevant source and public-boundary tests pass; six injected implementation-fault controls fail on the prior revision. Live Electron behavior was not exercised.

tests/boundary/filesystem/javascript-applications/javascriptRuntimeContentPriority.test.ts

@@ -4,7 +4,7 @@ import { join } from "node:path";
 import { expect, it } from "vitest";
 
 import {
-  parseRuntimeReconciliationInput,
+  readRuntimeReconciliationInput,
   reconcileJavaScriptRuntime,
 } from "../../../../src/domain/javascript/javascriptRuntimeReconciliation.js";
 import { reconcileRuntimeEntities } from "../../../../src/domain/javascript/javascriptRuntimeReconciliationMatching.js";
@@ -22,6 +22,14 @@ import { createTestTempDirectory } from "../../../fixtures/temporaryDirectory.js
 
 const CAPTURED = "export const observed = 'different';\n";
 
+const readInput = (
+  input: Parameters<typeof readRuntimeReconciliationInput>[0],
+) => {
+  const result = readRuntimeReconciliationInput(input);
+  if (!result.ok) throw result.error;
+  return result.value;
+};
+
 const collisionInput = async (
   alternatives: number,
   explicitMapping: boolean,
@@ -33,7 +41,7 @@ const collisionInput = async (
     : root;
   const extra = await createTestTempDirectory("rea-runtime-content-extra-");
   await writeFile(join(extra, "app.js"), CAPTURED);
-  return parseRuntimeReconciliationInput(
+  return readInput(
     reconcileJavaScriptRuntimeInputSchema.parse({
       static_layers: [
         {
@@ -106,7 +114,7 @@ it("restricts content-and-location ambiguity to mapped candidates", async () =>
   const live = await createTestTempDirectory("rea-runtime-content-mapped-");
   const analysis = await analyzeFixture(application);
   const mapping = [{ kind: "file-root", root: live, artifact_prefix: "" }];
-  const parsed = parseRuntimeReconciliationInput(
+  const parsed = readInput(
     reconcileJavaScriptRuntimeInputSchema.parse({
       static_layers: [
         { role: "application", analysis, runtime_mappings: mapping },
@@ -148,7 +156,7 @@ it.each([false, true])(
       "rea-runtime-content-unlocated-",
     );
     const result = reconcileJavaScriptRuntime(
-      parseRuntimeReconciliationInput(
+      readInput(
         reconcileJavaScriptRuntimeInputSchema.parse({
           static_layers: [
             {
@@ -245,7 +253,7 @@ const reconcileCapturedScript = async (input: {
   readonly includeWorker?: boolean;
 }) => {
   const result = reconcileJavaScriptRuntime(
-    parseRuntimeReconciliationInput(
+    readInput(
       reconcileJavaScriptRuntimeInputSchema.parse({
         static_layers: await Promise.all(
           input.layers.map(async ({ root, mapping }, index) => ({
@@ -385,7 +393,7 @@ it.each([
   "applies URL-prefix mapping presence to captured script %s",
   async (url, status) => {
     const root = await applicationFixture();
-    const parsed = parseRuntimeReconciliationInput(
+    const parsed = readInput(
       reconcileJavaScriptRuntimeInputSchema.parse({
         static_layers: [
           {