fix(javascript): isolate source analysis and retain bounded partial evidence (#1651)

* refactor(javascript): validate transferable file projections

* test(javascript): consume decoded module and static facts

* fix(javascript): isolate source analysis and retain bounded partial evidence

* test(javascript): verify cleanup retention and repeated source paths

src/domain/javascript/javascriptApplicationProjectionResources.ts

@@ -0,0 +1,42 @@
+import type { JavaScriptStaticAnalysis } from "./javascriptStaticAnalysisTypes.js";
+
+/** Forecast static-fact expansion into observations, nodes and relationships. */
+export const estimateJavaScriptStaticApplicationProjection = (
+  facts: JavaScriptStaticAnalysis,
+  checkpointBytes: number,
+  sourcePath: string,
+): number => {
+  // A finding can produce a node, a separate observation and several edges.
+  // Allow for identifiers, locations, authority, coverage and schema copies,
+  // independently of the producer's compact checkpoint representation.
+  const findings =
+    facts.references.length +
+    facts.endpoints.length +
+    facts.storage.length +
+    facts.role_paths.length +
+    facts.source_map_urls.length +
+    facts.electron.browser_windows.length +
+    facts.electron.context_bridge_apis.length +
+    facts.electron.ipc.length +
+    facts.electron.sender_validations.length +
+    facts.electron.utility_processes.length +
+    facts.electron.native_addon_bindings.length;
+  let records = findings * 8;
+  let repeatedBytes = 0;
+  for (const registration of facts.bundler_registrations) {
+    records +=
+      3 +
+      registration.modules.length * 3 +
+      registration.entry_module_keys.length * 3 +
+      registration.async_chunk_keys.length * 3;
+    // Every module observation and containment edge repeats its chunk keys.
+    repeatedBytes +=
+      Buffer.byteLength(JSON.stringify(registration.chunk_keys)) *
+      registration.modules.length *
+      2;
+  }
+  for (const binding of facts.electron.native_addon_bindings)
+    records += binding.members.length * 3;
+  const metadataBytes = 2048 + Buffer.byteLength(sourcePath) * 4;
+  return (checkpointBytes * 4 + repeatedBytes + records * metadataBytes) * 8;
+};