refactor(thinking): refine configuration logging

internal/logging/global_logger.go

@@ -6,6 +6,7 @@ import (
 	"io"
 	"os"
 	"path/filepath"
+	"sort"
 	"strings"
 	"sync"
 
@@ -52,11 +53,31 @@ func (m *LogFormatter) Format(entry *log.Entry) ([]byte, error) {
 	}
 	levelStr := fmt.Sprintf("%-5s", level)
 
+	// Build fields string (excluding request_id which is already shown)
+	var fieldsStr string
+	if len(entry.Data) > 0 {
+		var keys []string
+		for k := range entry.Data {
+			if k == "request_id" {
+				continue
+			}
+			keys = append(keys, k)
+		}
+		sort.Strings(keys)
+		var fields []string
+		for _, k := range keys {
+			fields = append(fields, fmt.Sprintf("%s=%v", k, entry.Data[k]))
+		}
+		if len(fields) > 0 {
+			fieldsStr = " " + strings.Join(fields, " ")
+		}
+	}
+
 	var formatted string
 	if entry.Caller != nil {
-		formatted = fmt.Sprintf("[%s] [%s] [%s] [%s:%d] %s\n", timestamp, reqID, levelStr, filepath.Base(entry.Caller.File), entry.Caller.Line, message)
+		formatted = fmt.Sprintf("[%s] [%s] [%s] [%s:%d] %s%s\n", timestamp, reqID, levelStr, filepath.Base(entry.Caller.File), entry.Caller.Line, message, fieldsStr)
 	} else {
-		formatted = fmt.Sprintf("[%s] [%s] [%s] %s\n", timestamp, reqID, levelStr, message)
+		formatted = fmt.Sprintf("[%s] [%s] [%s] %s%s\n", timestamp, reqID, levelStr, message, fieldsStr)
 	}
 	buffer.WriteString(formatted)
 

internal/thinking/apply.go

@@ -117,18 +117,21 @@ func ApplyThinking(body []byte, model string, provider string) ([]byte, error) {
 	if suffixResult.HasSuffix {
 		config = parseSuffixToConfig(suffixResult.RawSuffix)
 		log.WithFields(log.Fields{
-			"provider":   provider,
-			"model":      model,
-			"raw_suffix": suffixResult.RawSuffix,
-			"config":     config,
-		}).Debug("thinking: using suffix config (priority)")
+			"provider": provider,
+			"model":    model,
+			"mode":     config.Mode,
+			"budget":   config.Budget,
+			"level":    config.Level,
+		}).Debug("thinking: config from model suffix")
 	} else {
 		config = extractThinkingConfig(body, provider)
 		log.WithFields(log.Fields{
 			"provider": provider,
 			"model":    modelInfo.ID,
-			"config":   config,
-		}).Debug("thinking: extracted config from request body")
+			"mode":     config.Mode,
+			"budget":   config.Budget,
+			"level":    config.Level,
+		}).Debug("thinking: original config from request")
 	}
 
 	if !hasThinkingConfig(config) {
@@ -163,10 +166,12 @@ func ApplyThinking(body []byte, model string, provider string) ([]byte, error) {
 	}
 
 	log.WithFields(log.Fields{
-		"provider":  provider,
-		"model":     modelInfo.ID,
-		"validated": *validated,
-	}).Debug("thinking: applying validated config")
+		"provider": provider,
+		"model":    modelInfo.ID,
+		"mode":     validated.Mode,
+		"budget":   validated.Budget,
+		"level":    validated.Level,
+	}).Debug("thinking: processed config to apply")
 
 	// 6. Apply configuration using provider-specific applier
 	return applier.Apply(body, *validated, modelInfo)

internal/thinking/types.go

@@ -20,6 +20,22 @@ const (
 	ModeAuto
 )
 
+// String returns the string representation of ThinkingMode.
+func (m ThinkingMode) String() string {
+	switch m {
+	case ModeBudget:
+		return "budget"
+	case ModeLevel:
+		return "level"
+	case ModeNone:
+		return "none"
+	case ModeAuto:
+		return "auto"
+	default:
+		return "unknown"
+	}
+}
+
 // ThinkingLevel represents a discrete thinking level.
 type ThinkingLevel string