fix(ripgrep): handle binary lookup exceptions gracefully

Wrap ripgrep binary lookup in a try-catch to prevent crashes when binary is not found. Also improve error message when binary is missing.

Author: phodal

core/src/main/kotlin/cc/unitmesh/devti/agenttool/search/RipgrepSearcher.kt

@@ -30,7 +30,11 @@ object RipgrepSearcher {
     ): CompletableFuture<String?> {
         return CompletableFuture.supplyAsync<String> {
             try {
-                val rgPath = findRipgrepBinary() ?: throw IOException("Ripgrep binary not found")
+                val rgPath = findRipgrepBinary()
+                if (rgPath == null) {
+                    return@supplyAsync "Ripgrep binary not found, try install it first: https://github.com/BurntSushi/ripgrep?tab=readme-ov-file#installation
+                }
+
                 val results = executeRipgrep(
                     project,
                     rgPath,
@@ -59,7 +63,6 @@ object RipgrepSearcher {
             }
         }
 
-
         val pb = ProcessBuilder("which", binName)
         val process = pb.start()
         try {

exts/devins-lang/src/main/kotlin/cc/unitmesh/devti/language/compiler/exec/RipgrepSearchInsCommand.kt

@@ -12,7 +12,11 @@ class RipgrepSearchInsCommand(
     override val commandName: BuiltinCommand = BuiltinCommand.RIPGREP_SEARCH
 
     override fun isApplicable(): Boolean {
-        return RipgrepSearcher.findRipgrepBinary() != null
+        return try {
+            RipgrepSearcher.findRipgrepBinary() != null
+        } catch (e: Exception) {
+            false
+        }
     }
 
     override suspend fun execute(): String? {