fix(javascript): bound primitive string growth and repeated evaluation

src/application/javascript/JavaScriptArtifactGraphBuilder.ts

@@ -25,6 +25,7 @@ import { semanticCoverageResourceLimits } from "../../domain/javascript/javascri
 import {
   SEMANTIC_EXPRESSION_DEPTH_LIMIT,
   SEMANTIC_PRIMITIVE_CANDIDATE_LIMIT,
+  SEMANTIC_PRIMITIVE_JSON_BYTES_LIMIT,
   semanticResourceLimitReason,
 } from "../../domain/javascript/javascriptSemanticResourceLimits.js";
 import {
@@ -136,11 +137,15 @@ const applicationGraphResourceLimit = (
   value:
     resourceLimit === "primitive-candidates"
       ? SEMANTIC_PRIMITIVE_CANDIDATE_LIMIT
-      : SEMANTIC_EXPRESSION_DEPTH_LIMIT,
+      : resourceLimit === "primitive-bytes"
+        ? SEMANTIC_PRIMITIVE_JSON_BYTES_LIMIT
+        : SEMANTIC_EXPRESSION_DEPTH_LIMIT,
   unit:
     resourceLimit === "expression-depth"
       ? ("depth" as const)
-      : ("items" as const),
+      : resourceLimit === "primitive-bytes"
+        ? ("bytes" as const)
+        : ("items" as const),
 });
 
 const graphLimitations = (

src/application/javascript/JavaScriptModuleRelationships.ts

@@ -10,6 +10,7 @@ import { semanticCoverageResourceLimits } from "../../domain/javascript/javascri
 import {
   SEMANTIC_EXPRESSION_DEPTH_LIMIT,
   SEMANTIC_PRIMITIVE_CANDIDATE_LIMIT,
+  SEMANTIC_PRIMITIVE_JSON_BYTES_LIMIT,
   semanticResourceLimitReason,
 } from "../../domain/javascript/javascriptSemanticResourceLimits.js";
 import type {
@@ -389,11 +390,15 @@ const semanticCoverage = (
       value:
         resourceLimit === "primitive-candidates"
           ? SEMANTIC_PRIMITIVE_CANDIDATE_LIMIT
-          : SEMANTIC_EXPRESSION_DEPTH_LIMIT,
+          : resourceLimit === "primitive-bytes"
+            ? SEMANTIC_PRIMITIVE_JSON_BYTES_LIMIT
+            : SEMANTIC_EXPRESSION_DEPTH_LIMIT,
       unit:
         resourceLimit === "expression-depth"
           ? ("depth" as const)
-          : ("items" as const),
+          : resourceLimit === "primitive-bytes"
+            ? ("bytes" as const)
+            : ("items" as const),
     })),
     semantic.ir.coverage.omittedCount,
   );

src/application/javascript/JavaScriptSemanticGraphBuilder.test.ts

@@ -111,6 +111,30 @@ it("preserves primitive candidate budget unknowns in semantic graph coverage", (
   );
 });
 
+it("preserves derived string-byte limit reasons in semantic graph unknowns", () => {
+  const declarations = ['const value0 = "x";'];
+  for (let index = 1; index <= 30; index += 1) {
+    const previous = `value${String(index - 1)}`;
+    declarations.push(
+      `const value${String(index)} = ${previous} + ${previous};`,
+    );
+  }
+  declarations.push("const answer = value30;");
+  const source = declarations.join("\n");
+  const ir = analyzeJavaScriptSemantics(source);
+  const graph = graphFor(source, ir);
+
+  expect(semanticCoverageResourceLimits(ir.coverage)).toContain(
+    "primitive-bytes",
+  );
+  expect(graph.unknowns).toContainEqual(
+    expect.objectContaining({
+      reason: "resource-limit",
+      detail: expect.stringMatching(/primitive string-byte budget exceeded/i),
+    }),
+  );
+});
+
 it("retains resource-limit reasons at nested object property slots", () => {
   const term = '(true ? "a" : "b")';
   const source = `const answer = { nested: { value: ${Array.from({ length: 20 }, () => term).join(" + ")} } };`;