feat(docql): pass tool result metadata to renderer

Update DocumentAgentExecutor to provide tool result metadata to the renderer, enabling richer output handling.

Author: phodal

mpp-core/src/commonMain/kotlin/cc/unitmesh/agent/executor/DocumentAgentExecutor.kt

@@ -270,7 +270,7 @@ class DocumentAgentExecutor(
                 // Update the results list with the modified execution result
                 results[results.lastIndex] = Triple(toolName, params, finalExecutionResult)
 
-                renderer.renderToolResult(toolName, finalExecutionResult.isSuccess, finalExecutionResult.content, displayOutput)
+                renderer.renderToolResult(toolName, finalExecutionResult.isSuccess, finalExecutionResult.content, displayOutput, finalExecutionResult.metadata)
             } catch (e: Exception) {
                 logger.error(e) { "Tool execution failed: ${toolName}" }
                 renderer.renderError("Tool execution failed: ${e.message}")

mpp-core/src/commonMain/kotlin/cc/unitmesh/agent/tool/impl/DocQLTool.kt

@@ -377,7 +377,6 @@ class DocQLInvocation(
             smartSummary = smartSummary
         )
 
-        // Return smart summary as main content (concise for LLM)
         return ToolResult.Success(smartSummary, stats.toMetadata())
     }