feat(smith): accept native image input

crates/adapter-smith/src/agent.rs

@@ -763,6 +763,25 @@ pub async fn run(
         if user_text.trim().is_empty() {
             continue;
         }
+        let user_content = match crate::image_input::user_content(user_text.clone(), &cwd) {
+            Ok(content) => content,
+            Err(e) => {
+                emit.emit(SessionEvent::Error {
+                    message: format!("image input error: {e:#}"),
+                });
+                continue;
+            }
+        };
+        if let Err(e) = provider::ensure_image_input_supported(
+            provider.as_ref(),
+            &messages,
+            Some(&user_content),
+        ) {
+            emit.emit(SessionEvent::Error {
+                message: e.to_string(),
+            });
+            continue;
+        }
         hooks
             .run(
                 "user_prompt_submit",
@@ -779,7 +798,7 @@ pub async fn run(
             persist,
             Message {
                 role: Role::User,
-                content: Content::Text { text: user_text },
+                content: user_content,
             }
         );
 
@@ -1723,7 +1742,7 @@ pub fn resolve_model_from_spec(spec_str: &str) -> Result<ResolvedModel> {
             Some(GROK_BASE_URL.to_string()),
             grok_api_key()?,
         )?),
-        provider::routing::Provider::DeepSeek => Box::new(provider::openai::OpenAi::with_config(
+        provider::routing::Provider::DeepSeek => Box::new(provider::openai::OpenAi::text_only(
             Some(DEEPSEEK_BASE_URL.to_string()),
             deepseek_api_key()?,
         )?),
@@ -1839,7 +1858,7 @@ fn build_profile_model(
             base_url.or_else(|| Some(GROK_BASE_URL.to_string())),
             profile_api_key(profile, name, &["GROK_API_KEY", "XAI_API_KEY"])?,
         )?),
-        provider::routing::Provider::DeepSeek => Box::new(provider::openai::OpenAi::with_config(
+        provider::routing::Provider::DeepSeek => Box::new(provider::openai::OpenAi::text_only(
             base_url.or_else(|| Some(DEEPSEEK_BASE_URL.to_string())),
             profile_api_key(profile, name, &["DEEPSEEK_API_KEY"])?,
         )?),

crates/adapter-smith/src/compact.rs

@@ -251,6 +251,11 @@ fn render_head_for_summarizer(head: &[Message]) -> String {
                 out.push_str(text.trim());
                 out.push_str("\n\n");
             }
+            (Role::User, Content::UserInput { text, images }) => {
+                out.push_str("USER: ");
+                out.push_str(text.trim());
+                out.push_str(&format!("\n[{} image attachment(s)]\n\n", images.len()));
+            }
             (_, Content::AssistantToolCalls { text, calls }) => {
                 if let Some(t) = text {
                     if !t.is_empty() {
@@ -304,6 +309,11 @@ fn render_head_for_summarizer(head: &[Message]) -> String {
                 out.push_str(text.trim());
                 out.push_str("\n\n");
             }
+            (Role::System | Role::Assistant | Role::Tool, Content::UserInput { text, images }) => {
+                out.push_str("OTHER: ");
+                out.push_str(text.trim());
+                out.push_str(&format!("\n[{} image attachment(s)]\n\n", images.len()));
+            }
         }
     }
     out

crates/adapter-smith/src/context.rs

@@ -186,6 +186,14 @@ pub fn estimate_tokens(messages: &[Message]) -> usize {
     for m in messages {
         match &m.content {
             Content::Text { text: t } => chars += t.len(),
+            Content::UserInput { text, images } => {
+                chars += text.len();
+                // Image tokenization is provider- and resolution-dependent.
+                // A conservative fixed allowance keeps base64 storage bytes
+                // from masquerading as text tokens while still budgeting the
+                // visual context carried by each image.
+                chars += images.len() * 6_000;
+            }
             Content::AssistantToolCalls { text, calls } => {
                 if let Some(t) = text {
                     chars += t.len();