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

go.mod

@@ -26,7 +26,7 @@ require (
 	github.com/larksuite/oapi-sdk-go/v3 v3.5.3
 	github.com/mailgun/mailgun-go/v5 v5.14.0
 	github.com/memohai/acgo v0.0.0-20260221232113-babac0d6acd7
-	github.com/memohai/twilight-ai v0.3.4-0.20260329101319-3ebcc563f5d9
+	github.com/memohai/twilight-ai v0.3.4-0.20260402155501-497ad09c6724
 	github.com/modelcontextprotocol/go-sdk v1.4.1
 	github.com/opencontainers/image-spec v1.1.1
 	github.com/opencontainers/runtime-spec v1.3.0

go.sum

@@ -230,6 +230,10 @@ github.com/memohai/acgo v0.0.0-20260221232113-babac0d6acd7 h1:beehwOQperqGWj4m4E
 github.com/memohai/acgo v0.0.0-20260221232113-babac0d6acd7/go.mod h1:OvmxM7JmnXBmwJWWVqtreL3HSHSKuzPbtbhlg5MvBg0=
 github.com/memohai/twilight-ai v0.3.4-0.20260329101319-3ebcc563f5d9 h1:vpq3FgZ7UJAWr63M4mAtB8wvUWHSAdrgWibTFocXFBk=
 github.com/memohai/twilight-ai v0.3.4-0.20260329101319-3ebcc563f5d9/go.mod h1:GZTT9GUT3uSs6zram/FcF24GLTZMFSpiybbYmjr+gH8=
+github.com/memohai/twilight-ai v0.3.4-0.20260402145441-9e9f798cbd2d h1:tZYwJ0YDc6FUlh3mXYv+Tkw5dLfMD6IgP8VY5/+AfB0=
+github.com/memohai/twilight-ai v0.3.4-0.20260402145441-9e9f798cbd2d/go.mod h1:GZTT9GUT3uSs6zram/FcF24GLTZMFSpiybbYmjr+gH8=
+github.com/memohai/twilight-ai v0.3.4-0.20260402155501-497ad09c6724 h1:/Hw5vHfAeHRGx+duPKyetT5n2t6J5cYMfUysN/Xh9U0=
+github.com/memohai/twilight-ai v0.3.4-0.20260402155501-497ad09c6724/go.mod h1:GZTT9GUT3uSs6zram/FcF24GLTZMFSpiybbYmjr+gH8=
 github.com/moby/docker-image-spec v1.3.1 h1:jMKff3w6PgbfSa69GfNg+zN/XLhfXJGnEx3Nl2EsFP0=
 github.com/moby/docker-image-spec v1.3.1/go.mod h1:eKmb5VW8vQEh/BAr2yvVNvuiJuY6UIocYsFu/DxxRpo=
 github.com/moby/locker v1.0.1 h1:fOXqR41zeveg4fFODix+1Ch4mj/gT0NE1XJbp/epuBg=

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

@@ -37,6 +37,7 @@ func (s *SpawnAdapter) Generate(ctx context.Context, cfg tools.SpawnRunConfig) (
 		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,