fix(agent): skip tools for models without tool-call capability and parse image output

- Add SupportsToolCall to RunConfig; only inject tools into SDK when set
- Update twilight-ai to 497ad09 which adds SSE scanner 10MB buffer
  (fixes token-too-long on large image payloads) and parses the images
  array from OpenAI-compatible chat completions into StreamFilePart

internal/agent/agent.go

@@ -366,7 +366,7 @@ func (*Agent) buildGenerateOptions(cfg RunConfig, tools []sdk.Tool, prepareStep
 		sdk.WithSystem(cfg.System),
 		sdk.WithMaxSteps(-1),
 	}
-	if len(tools) > 0 {
+	if len(tools) > 0 && cfg.SupportsToolCall {
 		opts = append(opts, sdk.WithTools(tools))
 	}
 	if prepareStep != nil {

internal/agent/read_media_test.go

@@ -246,6 +246,7 @@ func TestAgentGenerateReadMediaInjectsImageIntoNextStep(t *testing.T) {
 		Model:              &sdk.Model{ID: "mock-model", Provider: modelProvider},
 		Messages:           []sdk.Message{sdk.UserMessage("look at the image")},
 		SupportsImageInput: true,
+		SupportsToolCall:   true,
 		Identity: SessionContext{
 			BotID: "bot-1",
 		},
@@ -321,6 +322,7 @@ func TestAgentGenerateReadMediaInjectsAnthropicSafeImageIntoNextStep(t *testing.
 		Model:              &sdk.Model{ID: "mock-model", Provider: modelProvider},
 		Messages:           []sdk.Message{sdk.UserMessage("look at the image")},
 		SupportsImageInput: true,
+		SupportsToolCall:   true,
 		Identity: SessionContext{
 			BotID: "bot-1",
 		},
@@ -367,6 +369,7 @@ func TestAgentStreamReadMediaPersistsInjectedImageInTerminalMessages(t *testing.
 		Model:              &sdk.Model{ID: "mock-model", Provider: modelProvider},
 		Messages:           []sdk.Message{sdk.UserMessage("look at the image")},
 		SupportsImageInput: true,
+		SupportsToolCall:   true,
 		Identity: SessionContext{
 			BotID: "bot-1",
 		},

internal/agent/spawn_adapter.go

@@ -31,12 +31,13 @@ func (s *SpawnAdapter) Generate(ctx context.Context, cfg tools.SpawnRunConfig) (
 	}
 
 	rc := RunConfig{
-		Model:           cfg.Model,
-		System:          cfg.System,
-		Query:           cfg.Query,
-		SessionType:     cfg.SessionType,
-		Messages:        messages,
-		ReasoningEffort: cfg.ReasoningEffort,
+		Model:            cfg.Model,
+		System:           cfg.System,
+		Query:            cfg.Query,
+		SessionType:      cfg.SessionType,
+		Messages:         messages,
+		ReasoningEffort:  cfg.ReasoningEffort,
+		SupportsToolCall: true,
 		Identity: SessionContext{
 			BotID:             cfg.Identity.BotID,
 			ChatID:            cfg.Identity.ChatID,

internal/agent/types.go

@@ -55,6 +55,7 @@ type RunConfig struct {
 	System             string
 	SessionType        string
 	SupportsImageInput bool
+	SupportsToolCall   bool
 	InlineImages       []sdk.ImagePart
 	Identity           SessionContext
 	Skills             []SkillEntry

internal/conversation/flow/resolver.go

@@ -274,6 +274,7 @@ func (r *Resolver) resolve(ctx context.Context, req conversation.ChatRequest) (r
 		Messages:           sdkMessages,
 		Query:              headerifiedQuery,
 		SupportsImageInput: chatModel.HasCompatibility(models.CompatVision),
+		SupportsToolCall:   chatModel.HasCompatibility(models.CompatToolCall),
 		InlineImages:       inlineImages,
 		Identity: agentpkg.SessionContext{
 			BotID:             req.BotID,