fix(javascript): retain unbound CommonJS semantic imports

Collect unbound literal CommonJS dependencies at the semantic module-link owner, retain null binding names and source provenance, and avoid duplicate links for calls already represented by bindings or re-exports. Preserve distinct nested calls, shadowing exclusions, dynamic binding uncertainty, and existing static asset references.

Fixes #1793.

src/domain/javascript/javascriptSemanticAnalysis.structure.test.ts

@@ -112,28 +112,6 @@ describe("JavaScript semantic analysis: structure 1", () => {
     },
   );
 
-  it("preserves unshadowed require origins through aliases and assignments", () => {
-    const ir = analyzeJavaScriptSemantics(`
-      const { ipcMain: bus } = require("electron");
-      const forwarded = bus;
-      let assigned;
-      assigned = require("electron").ipcMain;
-      { const require = localLoader; require("./local.js"); }
-    `);
-    for (const name of ["bus", "forwarded"])
-      expect(origin(topLevelBinding(ir, name))).toEqual({
-        specifier: "electron",
-        importedPath: ["ipcMain"],
-      });
-    expect(topLevelBinding(ir, "assigned").provenance).toMatchObject({
-      status: "ambiguous",
-      origins: [{ specifier: "electron", importedPath: ["ipcMain"] }],
-    });
-    expect(
-      ir.moduleLinks.filter(({ kind }) => kind === "require"),
-    ).toHaveLength(1);
-  });
-
   it("propagates literal, template, object, conditional, and destructured values", () => {
     const ir = analyzeJavaScriptSemantics(`
       const prefix = "rea";