refactor: rebrand from cs-agent to BossChat

- Rename Go module: cs-agent → bosschat
- Rename all import paths across 200+ Go files
- Rename SDK: cs-ai-agent-sdk → bosschat-sdk
- Rename message protocol: cs-agent:* → bosschat:*
- Rename JS globals: CSAgentConfig → BossChatConfig
- Rename CSS classes: cs-agent-* → bosschat-*
- Update Makefile APP_NAME and ARCHIVE_NAME
- Update logo assets
- Fix display name: BoosChat → BossChat

internal/pkg/utils/content_chunk.go

@@ -1,7 +1,7 @@
 package utils
 
 import (
-	"cs-agent/internal/pkg/enums"
+	"bosschat/internal/pkg/enums"
 	"strings"
 
 	"golang.org/x/net/html"

internal/pkg/utils/content_chunk_test.go

@@ -1,7 +1,7 @@
 package utils
 
 import (
-	"cs-agent/internal/pkg/enums"
+	"bosschat/internal/pkg/enums"
 	"reflect"
 	"testing"
 )

internal/pkg/utils/message.go

@@ -2,10 +2,10 @@ package utils
 
 import (
 	"bytes"
-	"cs-agent/internal/models"
-	"cs-agent/internal/pkg/enums"
-	"cs-agent/internal/repositories"
-	"cs-agent/internal/services/storage"
+	"bosschat/internal/models"
+	"bosschat/internal/pkg/enums"
+	"bosschat/internal/repositories"
+	"bosschat/internal/services/storage"
 	"encoding/json"
 	"fmt"
 	"strings"

internal/pkg/utils/message_test.go

@@ -1,9 +1,9 @@
 package utils
 
 import (
-	"cs-agent/internal/models"
-	"cs-agent/internal/pkg/config"
-	"cs-agent/internal/pkg/enums"
+	"bosschat/internal/models"
+	"bosschat/internal/pkg/config"
+	"bosschat/internal/pkg/enums"
 	"strings"
 	"testing"
 	"time"

internal/pkg/utils/utils.go

@@ -2,9 +2,9 @@ package utils
 
 import (
 	"crypto/rand"
-	"cs-agent/internal/models"
-	"cs-agent/internal/pkg/dto"
-	"cs-agent/internal/pkg/errorsx"
+	"bosschat/internal/models"
+	"bosschat/internal/pkg/dto"
+	"bosschat/internal/pkg/errorsx"
 	"strconv"
 	"strings"
 	"time"