fix(tools): minor ast-grep improvements

Small fixes to AST-grep constants, tools, and utility functions.

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/tools/ast-grep/constants.ts

@@ -233,9 +233,9 @@ export function formatEnvironmentCheck(result: EnvironmentCheckResult): string {
 
   // CLI status
   if (result.cli.available) {
-    lines.push(`✓ CLI: Available (${result.cli.path})`)
+    lines.push(`[OK] CLI: Available (${result.cli.path})`)
   } else {
-    lines.push(`✗ CLI: Not available`)
+    lines.push(`[X] CLI: Not available`)
     if (result.cli.error) {
       lines.push(`  Error: ${result.cli.error}`)
     }
@@ -244,9 +244,9 @@ export function formatEnvironmentCheck(result: EnvironmentCheckResult): string {
 
   // NAPI status
   if (result.napi.available) {
-    lines.push(`✓ NAPI: Available`)
+    lines.push(`[OK] NAPI: Available`)
   } else {
-    lines.push(`✗ NAPI: Not available`)
+    lines.push(`[X] NAPI: Not available`)
     if (result.napi.error) {
       lines.push(`  Error: ${result.napi.error}`)
     }

src/tools/ast-grep/tools.ts

@@ -15,17 +15,17 @@ function getEmptyResultHint(pattern: string, lang: CliLanguage): string | null {
   if (lang === "python") {
     if (src.startsWith("class ") && src.endsWith(":")) {
       const withoutColon = src.slice(0, -1)
-      return `💡 Hint: Remove trailing colon. Try: "${withoutColon}"`
+      return `Hint: Remove trailing colon. Try: "${withoutColon}"`
     }
     if ((src.startsWith("def ") || src.startsWith("async def ")) && src.endsWith(":")) {
       const withoutColon = src.slice(0, -1)
-      return `💡 Hint: Remove trailing colon. Try: "${withoutColon}"`
+      return `Hint: Remove trailing colon. Try: "${withoutColon}"`
     }
   }
 
   if (["javascript", "typescript", "tsx"].includes(lang)) {
     if (/^(export\s+)?(async\s+)?function\s+\$[A-Z_]+\s*$/i.test(src)) {
-      return `💡 Hint: Function patterns need params and body. Try "function $NAME($$$) { $$$ }"`
+      return `Hint: Function patterns need params and body. Try "function $NAME($$$) { $$$ }"`
     }
   }
 

src/tools/ast-grep/utils.ts

@@ -17,7 +17,7 @@ export function formatSearchResult(result: SgResult): string {
       : result.truncatedReason === "max_output_bytes"
       ? "output exceeded 1MB limit"
       : "search timed out"
-    lines.push(`⚠️ Results truncated (${reason})\n`)
+    lines.push(`[TRUNCATED] Results truncated (${reason})\n`)
   }
 
   lines.push(`Found ${result.matches.length} match(es)${result.truncated ? ` (truncated from ${result.totalMatches})` : ""}:\n`)
@@ -50,7 +50,7 @@ export function formatReplaceResult(result: SgResult, isDryRun: boolean): string
       : result.truncatedReason === "max_output_bytes"
       ? "output exceeded 1MB limit"
       : "search timed out"
-    lines.push(`⚠️ Results truncated (${reason})\n`)
+    lines.push(`[TRUNCATED] Results truncated (${reason})\n`)
   }
 
   lines.push(`${prefix}${result.matches.length} replacement(s):\n`)