refactor: remove vendor-specific references from code and docs

Replace minimax-specific names in comments, tests, and README examples
with generic placeholders. The XML tool call handling is provider-agnostic.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

README.ja.md

@@ -630,14 +630,14 @@ HEARTBEAT_OK 応答         ユーザーが直接結果を受け取る
   "agents": {
     "defaults": {
       "provider": "vllm",
-      "model": "MiniMax-M1-80k",
+      "model": "your-model-name",
       "model_fallbacks": ["openai/gpt-4o", "anthropic/claude-sonnet-4-5-20250929"]
     }
   },
   "providers": {
     "vllm": {
-      "api_key": "minimax-key",
+      "api_key": "your-vllm-key",
-      "api_base": "https://api.minimax.io/v1"
+      "api_base": "https://api.example.com/v1"
     },
     "openai": {
       "auth_method": "oauth"

README.md

@@ -698,14 +698,14 @@ This keeps the runtime lightweight while making new OpenAI-compatible backends m
   "agents": {
     "defaults": {
       "provider": "vllm",
-      "model": "MiniMax-M1-80k",
+      "model": "your-model-name",
       "model_fallbacks": ["openai/gpt-4o", "anthropic/claude-sonnet-4-5-20250929"]
     }
   },
   "providers": {
     "vllm": {
-      "api_key": "minimax-key",
+      "api_key": "your-vllm-key",
-      "api_base": "https://api.minimax.io/v1"
+      "api_base": "https://api.example.com/v1"
     },
     "openai": {
       "auth_method": "oauth"

pkg/providers/claude_cli_provider_test.go

@@ -983,11 +983,11 @@ func TestFindMatchingBrace(t *testing.T) {
 // --- XML tool call extract/strip tests ---
 
 func TestExtractXMLToolCalls_Single(t *testing.T) {
-	text := `<minimax:toolcall>
+	text := `<vendor:toolcall>
 <invoke name="exec">
 <parameter name="command">echo hello</parameter>
 </invoke>
-</minimax:toolcall>`
+</vendor:toolcall>`
 
 	calls := extractXMLToolCalls(text)
 	if len(calls) != 1 {
@@ -1005,7 +1005,7 @@ func TestExtractXMLToolCalls_Single(t *testing.T) {
 }
 
 func TestExtractXMLToolCalls_Multiple(t *testing.T) {
-	text := `<minimax:toolcall>
+	text := `<vendor:toolcall>
 <invoke name="web_search">
 <parameter name="query">golang testing</parameter>
 </invoke>
@@ -1013,7 +1013,7 @@ func TestExtractXMLToolCalls_Multiple(t *testing.T) {
 <parameter name="command">go test ./...</parameter>
 <parameter name="timeout">30</parameter>
 </invoke>
-</minimax:toolcall>`
+</vendor:toolcall>`
 
 	calls := extractXMLToolCalls(text)
 	if len(calls) != 2 {
@@ -1039,11 +1039,11 @@ func TestExtractXMLToolCalls_NoXML(t *testing.T) {
 
 func TestStripXMLToolCalls(t *testing.T) {
 	text := `Let me run that.
-<minimax:toolcall>
+<vendor:toolcall>
 <invoke name="exec">
 <parameter name="command">echo hello</parameter>
 </invoke>
-</minimax:toolcall>
+</vendor:toolcall>
 Done.`
 
 	got := stripXMLToolCalls(text)

pkg/providers/factory_test.go

@@ -327,8 +327,8 @@ func TestCreateProviderByName_OpenAI_OAuth(t *testing.T) {
 
 func TestCreateProviderByName_VLLM(t *testing.T) {
 	cfg := config.DefaultConfig()
-	cfg.Providers.VLLM.APIKey = "minimax-key"
+	cfg.Providers.VLLM.APIKey = "test-vllm-key"
-	cfg.Providers.VLLM.APIBase = "https://api.minimax.io/v1"
+	cfg.Providers.VLLM.APIBase = "https://api.example.com/v1"
 
 	provider, err := CreateProviderByName(cfg, "vllm")
 	if err != nil {

pkg/providers/http_provider.go

@@ -28,7 +28,7 @@ func (p *HTTPProvider) Chat(ctx context.Context, messages []Message, tools []Too
 		return nil, err
 	}
 	// If provider returned no structured tool_calls but Content has XML
-	// tool call blocks (e.g. minimax), parse them as a fallback.
+	// tool call blocks (e.g. <ns:toolcall>), parse them as a fallback.
 	if len(resp.ToolCalls) == 0 {
 		if xmlCalls := extractXMLToolCalls(resp.Content); len(xmlCalls) > 0 {
 			resp.ToolCalls = xmlCalls

pkg/providers/tool_call_extract.go

@@ -57,17 +57,17 @@ func extractToolCallsFromText(text string) []ToolCall {
 	return result
 }
 
-// extractXMLToolCalls parses XML tool call blocks (e.g. <minimax:toolcall>)
+// extractXMLToolCalls parses XML tool call blocks (e.g. <ns:toolcall>)
 // into structured ToolCall objects. Used as a fallback when the provider returns
 // tool calls as XML in Content but not in the structured tool_calls field.
 //
 // Expected format:
 //
-//	<vendor:toolcall>
+//	<ns:toolcall>
 //	<invoke name="tool_name">
 //	<parameter name="param">value</parameter>
 //	</invoke>
-//	</vendor:toolcall>
+//	</ns:toolcall>
 func extractXMLToolCalls(text string) []ToolCall {
 	var result []ToolCall
 	remaining := text
@@ -173,7 +173,7 @@ func extractXMLToolCalls(text string) []ToolCall {
 	return result
 }
 
-// stripXMLToolCalls removes XML tool call blocks (e.g. <minimax:toolcall>...</minimax:toolcall>)
+// stripXMLToolCalls removes XML tool call blocks (e.g. <ns:toolcall>...</ns:toolcall>)
 // from response text. Some providers embed raw XML tool calls in Content alongside
 // structured tool_calls; this prevents them from leaking to users.
 func stripXMLToolCalls(text string) string {
@@ -187,7 +187,7 @@ func stripXMLToolCalls(text string) string {
 	if tagStart == -1 {
 		return text
 	}
-	// Extract namespace (e.g. "minimax" from "<minimax:toolcall>")
+	// Extract namespace (e.g. "ns" from "<ns:toolcall>")
 	ns := text[tagStart+1 : idx]
 	closeTag := "</" + ns + ":toolcall>"
 	closeIdx := strings.Index(text, closeTag)