perf(javascript): share one definitions pass and index wrapper IPC dedupe (#3779)

Static analysis rebuilt the full lexical definitions index three times per
file (open receivers, RPC client roots, binding lookup) and the Electron
wrapper pass checked each substituted IPC registration against every prior
finding with JSON.stringify, which is quadratic in registrations.

Classify open receivers and RPC client roots in one traversal over a single
definitions-only index, then extend that same state with ambient writes for
binding lookup. Index IPC findings by side, operation, channel and location
so duplicate checks only consult same-endpoint candidates.

Static facts are byte-identical on the measured corpora.

Refs #3670

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

src/domain/javascript/javascriptSemanticAnalysisSteps.test.ts

@@ -5,8 +5,8 @@ import {
   analyzeParsedJavaScriptSemanticsSteps,
   classifyParsedJavaScriptElectronBindings,
   classifyParsedJavaScriptElectronBindingsSteps,
-  classifyParsedJavaScriptOpenReceivers,
-  classifyParsedJavaScriptOpenReceiversSteps,
+  classifyParsedJavaScriptReceivers,
+  classifyParsedJavaScriptReceiversSteps,
 } from "./javascriptSemanticAnalysis.js";
 import { parseJavaScriptSource } from "./javascriptSourceParser.js";
 import {
@@ -110,15 +110,15 @@ new NativeWindow();
 `;
   const parsed = parseJavaScriptSource(text, "receivers.js");
   if (parsed === null) throw new Error("Expected parsed source");
-  const openSteps = classifyParsedJavaScriptOpenReceiversSteps(parsed);
+  const openSteps = classifyParsedJavaScriptReceiversSteps(parsed);
   let openStep = openSteps.next();
   expect(openStep.done).toBe(false);
   while (openStep.done !== true) openStep = openSteps.next();
-  expect([...openStep.value]).toEqual([
+  expect([...openStep.value.openReceivers]).toEqual([
     [text.indexOf('ambient.open("/local")'), "local"],
     [text.indexOf('ambient.open("/global")'), "window"],
   ]);
-  expect(openStep.value).toEqual(classifyParsedJavaScriptOpenReceivers(parsed));
+  expect(openStep.value).toEqual(classifyParsedJavaScriptReceivers(parsed));
 
   const electronSteps = classifyParsedJavaScriptElectronBindingsSteps(parsed);
   let electronStep = electronSteps.next();