feat(search): limit ripgrep results and improve formatting

- Add result count display and limit output to first 30 results
- Improve code formatting in RipgrepSearchInsCommand
- Update documentation with regex usage tips

Author: phodal

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

@@ -174,17 +174,23 @@ object RipgrepSearcher {
         return cmd
     }
 
-    private fun formatResults(results: MutableList<RipgrepSearchResult>, basePath: String): String {
+    private fun formatResults(searchResults: MutableList<RipgrepSearchResult>, basePath: String): String {
         val output = StringBuilder()
         val grouped: MutableMap<String?, MutableList<RipgrepSearchResult?>?> =
             LinkedHashMap<String?, MutableList<RipgrepSearchResult?>?>()
 
+        var results = searchResults
+        output.append("Total results: ").append(results.size)
+        if (results.size > 30) {
+            results = results.subList(0, 30)
+            output.append("Too many results, only show first 30 results\n")
+        }
+
         for (result in results) {
             val relPath = getRelativePath(basePath, result.filePath!!)
             grouped.computeIfAbsent(relPath) { k: String? -> ArrayList<RipgrepSearchResult?>() }!!.add(result)
         }
-
-        output.append("Total results: ").append(results.size).append("\n```bash\n")
+        output.append("\n```bash\n")
         for (entry in grouped.entries) {
             output.append("## filepath: ").append(entry.key).append("\n")
             val filePath = Paths.get(basePath, entry.key)

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

@@ -6,9 +6,7 @@ import cc.unitmesh.devti.agent.tool.search.RipgrepSearcher
 import com.intellij.openapi.project.Project
 
 /// https://github.com/MituuZ/fuzzier
-class RipgrepSearchInsCommand(
-    val myProject: Project, private val scope: String, val text: String?,
-) : InsCommand {
+class RipgrepSearchInsCommand(val myProject: Project, private val scope: String, val text: String?) : InsCommand {
     override val commandName: BuiltinCommand = BuiltinCommand.RIPGREP_SEARCH
 
     override fun isApplicable(): Boolean {

exts/devins-lang/src/main/resources/agent/toolExamples/ripgrepSearch.devin

@@ -1,2 +1,3 @@
 支持 Regex 的全局搜索
-/ripgrepSearch:.*AutoDev.*
+/ripgrepSearch:.*AutoDev.*
+优化使用 Regex 方式，诸如使用 /s 替换空格