test(scanning): add regression tests for dot-folder exclusions

- codebase-generator: verify .claude/, .plans/, .cursor/, .vscode/ excluded
- detection: verify scanProjectFiles skips .claude, .gsd, .planning, .plans, .cursor, .vscode

src/resources/extensions/gsd/tests/codebase-generator.test.ts

@@ -138,6 +138,28 @@ test("generateCodebaseMap: excludes .gsd/ files", () => {
   }
 });
 
+test("generateCodebaseMap: excludes .claude/ and other tool directories", () => {
+  const base = makeTmpRepo();
+  try {
+    addFile(base, "src/main.ts");
+    addFile(base, ".claude/CLAUDE.md");
+    addFile(base, ".claude/memory/user.md");
+    addFile(base, ".plans/plan.md");
+    addFile(base, ".cursor/settings.json");
+    addFile(base, ".vscode/settings.json");
+
+    const result = generateCodebaseMap(base);
+    assert.ok(result.content.includes("`src/main.ts`"), "should include src/main.ts");
+    assert.ok(!result.content.includes("CLAUDE.md"), "should exclude .claude/ files");
+    assert.ok(!result.content.includes("user.md"), "should exclude .claude/memory/ files");
+    assert.ok(!result.content.includes(".plans"), "should exclude .plans/ files");
+    assert.ok(!result.content.includes(".cursor"), "should exclude .cursor/ files");
+    assert.ok(!result.content.includes(".vscode"), "should exclude .vscode/ files");
+  } finally {
+    cleanup(base);
+  }
+});
+
 test("generateCodebaseMap: excludes binary and lock files", () => {
   const base = makeTmpRepo();
   try {

src/resources/extensions/gsd/tests/detection.test.ts

@@ -17,6 +17,7 @@ import {
   detectProjectState,
   detectV1Planning,
   detectProjectSignals,
+  scanProjectFiles,
 } from "../detection.ts";
 
 function makeTempDir(prefix: string): string {
@@ -1188,3 +1189,39 @@ test("detectProjectSignals: Spring Boot settings-defined catalog accessor emits
     cleanup(dir);
   }
 });
+
+// ─── scanProjectFiles: RECURSIVE_SCAN_IGNORED_DIRS ──────────────────────
+
+test("scanProjectFiles: excludes .claude, .gsd, .planning, .plans, .cursor, .vscode directories", () => {
+  const dir = makeTempDir("scan-ignore-dotdirs");
+  try {
+    // Create project files that should be included
+    mkdirSync(join(dir, "src"), { recursive: true });
+    writeFileSync(join(dir, "src", "main.ts"), "// main\n", "utf-8");
+    writeFileSync(join(dir, "README.md"), "# Project\n", "utf-8");
+
+    // Create tool directories that should be excluded
+    const excludedDirs = [".claude", ".gsd", ".planning", ".plans", ".cursor", ".vscode"];
+    for (const d of excludedDirs) {
+      mkdirSync(join(dir, d), { recursive: true });
+      writeFileSync(join(dir, d, "config.json"), "{}\n", "utf-8");
+    }
+    // Nested .claude directory
+    mkdirSync(join(dir, ".claude", "memory"), { recursive: true });
+    writeFileSync(join(dir, ".claude", "memory", "user.md"), "# Memory\n", "utf-8");
+
+    const files = scanProjectFiles(dir);
+
+    // Should include project files
+    assert.ok(files.includes("src/main.ts"), "should include src/main.ts");
+    assert.ok(files.includes("README.md"), "should include README.md");
+
+    // Should exclude all tool directories
+    for (const d of excludedDirs) {
+      const hasExcluded = files.some((f) => f.startsWith(`${d}/`));
+      assert.ok(!hasExcluded, `should exclude ${d}/ directory but found: ${files.filter((f) => f.startsWith(`${d}/`)).join(", ")}`);
+    }
+  } finally {
+    cleanup(dir);
+  }
+});