fix: address PR review comments for TLDR feature

- Add TLDRIncludeMessage config option for privacy in group chats
- Add i18n.go with function-based message templates
- Deduplicate executed tools to prevent unbounded growth
- Replace strings.Builder with fmt.Sprintf for cleaner code
- Move deduplication to single pass before generateTLDR call

pkg/agent/i18n.go

@@ -0,0 +1,25 @@
+package agent
+
+import "fmt"
+
+func tldrWithToolsMessage(toolCount int, tools string, iteration int) string {
+	return fmt.Sprintf("Processed %d tool(s): %s. (%d iteration%s)", toolCount, tools, iteration, pluralize(iteration))
+}
+
+func tldrNoToolsMessage(iteration int) string {
+	return fmt.Sprintf("Processed your request (%d iteration%s)", iteration, pluralize(iteration))
+}
+
+func tldrWithMessage(msg string) string {
+	if len(msg) <= 50 {
+		return fmt.Sprintf(". Message: \"%s\"", msg)
+	}
+	return fmt.Sprintf(". Message: \"%s...\"", msg[:50])
+}
+
+func pluralize(n int) string {
+	if n > 1 {
+		return "s"
+	}
+	return ""
+}

pkg/agent/loop.go

@@ -12,7 +12,6 @@ import (
 	"errors"
 	"fmt"
 	"path/filepath"
-	"strconv"
 	"strings"
 	"sync"
 	"sync/atomic"
@@ -529,7 +528,16 @@ func (al *AgentLoop) runAgentLoop(ctx context.Context, agent *AgentInstance, opt
 
 	// 5. Handle empty response
 	if finalContent == "" {
-		finalContent = generateTLDR(opts.UserMessage, executedTools, iteration)
+		// Deduplicate tools for TLDR
+		seen := make(map[string]bool)
+		uniqueTools := make([]string, 0, len(executedTools))
+		for _, t := range executedTools {
+			if !seen[t] {
+				seen[t] = true
+				uniqueTools = append(uniqueTools, t)
+			}
+		}
+		finalContent = generateTLDR(opts.UserMessage, uniqueTools, iteration, al.cfg.Agents.Defaults.TLDRIncludeMessage)
 	}
 
 	// 6. Save final assistant message to session
@@ -1358,36 +1366,18 @@ func extractParentPeer(msg bus.InboundMessage) *routing.RoutePeer {
 
 // generateTLDR generates a summary when the LLM returns an empty response.
 // It provides context about what was processed instead of a generic message.
-func generateTLDR(userMessage string, executedTools []string, iteration int) string {
-	var sb strings.Builder
+func generateTLDR(userMessage string, executedTools []string, iteration int, includeMessage bool) string {
+	var result string
 
 	if len(executedTools) > 0 {
-		sb.WriteString("Processed ")
-		sb.WriteString(strconv.Itoa(len(executedTools)))
-		sb.WriteString(" tool(s): ")
-		sb.WriteString(strings.Join(executedTools, ", "))
-		sb.WriteString(".")
+		result = tldrWithToolsMessage(len(executedTools), strings.Join(executedTools, ", "), iteration)
 	} else {
-		sb.WriteString("Processed your request")
+		result = tldrNoToolsMessage(iteration)
 	}
 
-	sb.WriteString(" (")
-	sb.WriteString(strconv.Itoa(iteration))
-	sb.WriteString(" iteration")
-	if iteration > 1 {
-		sb.WriteString("s")
-	}
-	sb.WriteString(")")
-
-	if len(userMessage) > 50 {
-		sb.WriteString(". Message: \"")
-		sb.WriteString(utils.Truncate(userMessage, 50))
-		sb.WriteString("...\"")
-	} else if userMessage != "" {
-		sb.WriteString(". Message: \"")
-		sb.WriteString(userMessage)
-		sb.WriteString("\"")
+	if includeMessage && len(userMessage) > 0 {
+		result += tldrWithMessage(userMessage)
 	}
 
-	return sb.String()
+	return result
 }

pkg/config/config.go

@@ -180,6 +180,7 @@ type AgentDefaults struct {
 	MaxTokens                 int      `json:"max_tokens"                      env:"PICOCLAW_AGENTS_DEFAULTS_MAX_TOKENS"`
 	Temperature               *float64 `json:"temperature,omitempty"           env:"PICOCLAW_AGENTS_DEFAULTS_TEMPERATURE"`
 	MaxToolIterations         int      `json:"max_tool_iterations"             env:"PICOCLAW_AGENTS_DEFAULTS_MAX_TOOL_ITERATIONS"`
+	TLDRIncludeMessage        bool     `json:"tldr_include_message"            env:"PICOCLAW_AGENTS_DEFAULTS_TLDR_INCLUDE_MESSAGE"`
 }
 
 // GetModelName returns the effective model name for the agent defaults.