feat: introduce custom provider example and remove redundant debug logs

- Added `examples/custom-provider/main.go` showcasing custom executor and translator integration using the SDK.
- Removed redundant debug logs from translator modules to enhance code cleanliness.
- Updated SDK documentation with new usage and advanced examples.
- Expanded the management API with new endpoints, including request logging and GPT-5 Codex features.

internal/translator/codex/claude/codex_claude_request.go

@@ -12,7 +12,6 @@ import (
 	"strings"
 
 	"github.com/router-for-me/CLIProxyAPI/v6/internal/misc"
-	log "github.com/sirupsen/logrus"
 	"github.com/tidwall/gjson"
 	"github.com/tidwall/sjson"
 )
@@ -36,7 +35,6 @@ import (
 // Returns:
 //   - []byte: The transformed request data in internal client format
 func ConvertClaudeRequestToCodex(modelName string, inputRawJSON []byte, _ bool) []byte {
-	log.Debug("ConvertClaudeRequestToCodex")
 	rawJSON := bytes.Clone(inputRawJSON)
 
 	template := `{"model":"","instructions":"","input":[]}`

internal/translator/codex/claude/codex_claude_response.go

@@ -11,7 +11,6 @@ import (
 	"context"
 	"fmt"
 
-	log "github.com/sirupsen/logrus"
 	"github.com/tidwall/gjson"
 	"github.com/tidwall/sjson"
 )
@@ -37,7 +36,6 @@ var (
 // Returns:
 //   - []string: A slice of strings, each containing a Claude Code-compatible JSON response
 func ConvertCodexResponseToClaude(_ context.Context, _ string, originalRequestRawJSON, requestRawJSON, rawJSON []byte, param *any) []string {
-	log.Debug("ConvertCodexResponseToClaude")
 	if *param == nil {
 		hasToolCall := false
 		*param = &hasToolCall
@@ -179,7 +177,6 @@ func ConvertCodexResponseToClaude(_ context.Context, _ string, originalRequestRa
 // Returns:
 //   - string: A Claude Code-compatible JSON response containing all message content and metadata
 func ConvertCodexResponseToClaudeNonStream(_ context.Context, _ string, originalRequestRawJSON, requestRawJSON, _ []byte, _ *any) string {
-	log.Debug("ConvertCodexResponseToClaudeNonStream")
 	return ""
 }