fix: tighten safe bin runtime policy coverage

src/infra/exec-safe-bin-runtime-policy.test.ts

@@ -13,8 +13,10 @@ describe("exec safe-bin runtime policy", () => {
   const interpreterCases: Array<{ bin: string; expected: boolean }> = [
     { bin: "python3", expected: true },
     { bin: "python3.12", expected: true },
+    { bin: " C:\\Tools\\Python3.EXE ", expected: true },
     { bin: "node", expected: true },
     { bin: "node20", expected: true },
+    { bin: "/usr/local/bin/node20", expected: true },
     { bin: "ruby3.2", expected: true },
     { bin: "bash", expected: true },
     { bin: "busybox", expected: true },
@@ -30,10 +32,9 @@ describe("exec safe-bin runtime policy", () => {
   }
 
   it("lists interpreter-like bins from a mixed set", () => {
-    expect(listInterpreterLikeSafeBins(["jq", "python3", "myfilter", "node"])).toEqual([
-      "node",
-      "python3",
-    ]);
+    expect(
+      listInterpreterLikeSafeBins(["jq", " C:\\Tools\\Python3.EXE ", "myfilter", "/usr/bin/node"]),
+    ).toEqual(["node", "python3"]);
   });
 
   it("merges and normalizes safe-bin profile fixtures", () => {
@@ -76,6 +77,19 @@ describe("exec safe-bin runtime policy", () => {
     expect(policy.unprofiledInterpreterSafeBins).toEqual(["python3"]);
   });
 
+  it("prefers local safe bins over global ones when both are configured", () => {
+    const policy = resolveExecSafeBinRuntimePolicy({
+      global: {
+        safeBins: ["python3", "jq"],
+      },
+      local: {
+        safeBins: ["sort"],
+      },
+    });
+
+    expect([...policy.safeBins]).toEqual(["sort"]);
+  });
+
   it("merges explicit safe-bin trusted dirs from global and local config", () => {
     const customDir = path.join(path.sep, "custom", "bin");
     const agentDir = path.join(path.sep, "agent", "bin");

src/infra/exec-safe-bin-runtime-policy.ts

@@ -65,7 +65,8 @@ function normalizeSafeBinName(raw: string): string {
     return "";
   }
   const tail = trimmed.split(/[\\/]/).at(-1);
-  return tail ?? trimmed;
+  const normalized = tail ?? trimmed;
+  return normalized.replace(/\.(?:exe|cmd|bat|com)$/i, "");
 }
 
 export function isInterpreterLikeSafeBin(raw: string): boolean {