fix(windows): resolve command execution and binary detection issues

src/agents/skills/config.ts

@@ -99,8 +99,10 @@ export function isBundledSkillAllowed(entry: SkillEntry, allowlist?: string[]):
 export function hasBinary(bin: string): boolean {
   const pathEnv = process.env.PATH ?? "";
   const parts = pathEnv.split(path.delimiter).filter(Boolean);
+  const extensions = process.platform === "win32" ? [".exe", ".cmd", ".bat", ""] : [""];
   for (const part of parts) {
-    const candidate = path.join(part, bin);
+    for (const ext of extensions) {
+      const candidate = path.join(part, bin + ext);
       try {
         fs.accessSync(candidate, fs.constants.X_OK);
         return true;
@@ -108,6 +110,7 @@ export function hasBinary(bin: string): boolean {
         // keep scanning
       }
     }
+  }
   return false;
 }
 

src/hooks/config.ts

@@ -68,8 +68,10 @@ export function resolveRuntimePlatform(): string {
 export function hasBinary(bin: string): boolean {
   const pathEnv = process.env.PATH ?? "";
   const parts = pathEnv.split(path.delimiter).filter(Boolean);
+  const extensions = process.platform === "win32" ? [".exe", ".cmd", ".bat", ""] : [""];
   for (const part of parts) {
-    const candidate = path.join(part, bin);
+    for (const ext of extensions) {
+      const candidate = path.join(part, bin + ext);
       try {
         fs.accessSync(candidate, fs.constants.X_OK);
         return true;
@@ -77,6 +79,7 @@ export function hasBinary(bin: string): boolean {
         // keep scanning
       }
     }
+  }
   return false;
 }
 

src/process/exec.ts

@@ -116,6 +116,7 @@ export async function runCommandWithTimeout(
     cwd,
     env: resolvedEnv,
     windowsVerbatimArguments,
+    shell: process.platform === "win32",
   });
   // Spawn with inherited stdin (TTY) so tools like `pi` stay interactive when needed.
   return await new Promise((resolve, reject) => {