fix(javascript): retain unavailable HTML reference scopes

docs/javascript-artifact-reconstruction.md

@@ -194,6 +194,12 @@ missing native/resource bytes as unknown. The occurrence keeps
 those missing bytes. See [MCP integrity handling](mcp-contracts.md#integrity-record-and-continue)
 for the tool-result contract.
 
+HTML whose bytes are not valid UTF-8 retains its file observation and an unknown
+`parse-html-script-references` scope with artifact-byte authority. Reference
+discovery was unavailable; zero retained script links does not establish that
+the unreadable HTML declared none. Readable HTML with no references has no such
+gap, and readable external references retain their load edges.
+
 ## Large results
 
 Use MCP `detail: "summary"` for a large application, then read selected views of

src/application/javascript/JavaScriptArtifactGraphStructure.ts

@@ -246,6 +246,13 @@ export const addJavaScriptArtifactFiles = (
         ),
         details: { analysis_status: analyzed.analysis_failure.status },
       });
+    else if (file.kind === "html" && !file.text.included)
+      addUnavailableStaticParseScope(context, {
+        file,
+        asset: target,
+        ...javascriptArtifactAnalysisScopes.html,
+        limitation: `HTML text could not be decoded: ${file.text.reason}.`,
+      });
     else if (
       file.kind === "javascript" &&
       (analyzed.javascript === null ||

tests/acceptance/applications/javascriptUnavailableHtmlCli.test.ts

@@ -0,0 +1,85 @@
+import { writeFile } from "node:fs/promises";
+import { join } from "node:path";
+import { expect } from "vitest";
+
+import { parseEvidence } from "../../../src/domain/evidence.js";
+import { javascriptApplicationAnalysisResultSchema } from "../../../src/domain/javascript/javascriptApplicationAnalysis.js";
+import { createTestTempDirectory } from "../../fixtures/temporaryDirectory.js";
+import { cliTest } from "../../support/cli/cliFixture.js";
+
+cliTest.for([
+  "invalid-html",
+  "empty-html",
+  "reference-html",
+  "invalid-json",
+] as const)(
+  "retains applicable unavailable HTML reference scope through CLI for %s",
+  async (testCase, { cli }) => {
+    const root = await createTestTempDirectory("rea-unavailable-html-");
+    const reference = '<script src="main.js"></script>';
+    const html =
+      testCase === "invalid-html"
+        ? Buffer.concat([Buffer.from(reference), Buffer.from([0xff])])
+        : testCase === "reference-html"
+          ? reference
+          : "<html></html>";
+    await writeFile(
+      join(root, "package.json"),
+      '{"name":"html-scope","main":"main.js"}',
+    );
+    await writeFile(join(root, "main.js"), "module.exports = 42;");
+    await writeFile(join(root, "index.html"), html);
+    await writeFile(
+      join(root, "data.json"),
+      testCase === "invalid-json" ? Buffer.from([0xff]) : "{}",
+    );
+    const response = await cli.run({
+      arguments: [
+        "analyze-javascript-application",
+        root,
+        ...["package.json", "main.js", "index.html", "data.json"].flatMap(
+          (path) => ["--source-path", path],
+        ),
+        "--format",
+        "json",
+      ],
+    });
+    expect(response.exitCode, response.stderr).toBe(0);
+    const result = javascriptApplicationAnalysisResultSchema.parse(
+      parseEvidence(response.json).normalized_result,
+    );
+    const scopes = result.graph.nodes
+      .filter(({ kind }) => kind === "unknown")
+      .flatMap(({ observations }) => observations);
+    const htmlScopes = scopes.filter(
+      ({ properties }) =>
+        properties.path === "index.html" &&
+        properties.operation === "parse-html-script-references",
+    );
+    expect(htmlScopes).toHaveLength(testCase === "invalid-html" ? 1 : 0);
+    if (testCase === "invalid-html") {
+      expect(htmlScopes[0]?.evidence).toMatchObject({
+        authority: "artifact-bytes",
+        state: "unavailable",
+      });
+      expect(htmlScopes[0]?.properties.limitation).toContain("invalid-utf8");
+      expect(result.graph.coverage).toMatchObject({
+        status: "partial",
+        truncated: false,
+      });
+    }
+    expect(
+      scopes.filter(
+        ({ properties }) =>
+          properties.path === "data.json" &&
+          properties.operation === "parse-json-module",
+      ),
+    ).toHaveLength(testCase === "invalid-json" ? 1 : 0);
+    expect(
+      result.graph.edges.filter(
+        ({ relation, properties }) =>
+          relation === "loads" && properties.script_path !== undefined,
+      ),
+    ).toHaveLength(testCase === "reference-html" ? 1 : 0);
+  },
+);