feat: add POST /insights/generate/agentic handler and route

Register the agentic insight endpoint that validates tool-calling capability,
runs the agentic loop, and returns the stored PhotoInsightResponse. Returns 400
for unsupported models, 500 for other errors. Max iterations configurable via
AGENTIC_MAX_ITERATIONS env var (default 10).

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

src/ai/handlers.rs

@@ -211,6 +211,108 @@ pub async fn get_all_insights_handler(
     }
 }
 
+/// POST /insights/generate/agentic - Generate insight using agentic tool-calling loop
+#[post("/insights/generate/agentic")]
+pub async fn generate_agentic_insight_handler(
+    http_request: HttpRequest,
+    _claims: Claims,
+    request: web::Json<GeneratePhotoInsightRequest>,
+    insight_generator: web::Data<InsightGenerator>,
+    insight_dao: web::Data<std::sync::Mutex<Box<dyn InsightDao>>>,
+) -> impl Responder {
+    let parent_context = extract_context_from_request(&http_request);
+    let tracer = global_tracer();
+    let mut span = tracer.start_with_context("http.insights.generate_agentic", &parent_context);
+
+    let normalized_path = normalize_path(&request.file_path);
+
+    span.set_attribute(KeyValue::new("file_path", normalized_path.clone()));
+    if let Some(ref model) = request.model {
+        span.set_attribute(KeyValue::new("model", model.clone()));
+    }
+    if let Some(ref prompt) = request.system_prompt {
+        span.set_attribute(KeyValue::new("has_custom_prompt", true));
+        span.set_attribute(KeyValue::new("prompt_length", prompt.len() as i64));
+    }
+    if let Some(ctx) = request.num_ctx {
+        span.set_attribute(KeyValue::new("num_ctx", ctx as i64));
+    }
+
+    let max_iterations: usize = std::env::var("AGENTIC_MAX_ITERATIONS")
+        .ok()
+        .and_then(|v| v.parse().ok())
+        .unwrap_or(10);
+
+    span.set_attribute(KeyValue::new("max_iterations", max_iterations as i64));
+
+    log::info!(
+        "Agentic insight generation triggered for photo: {} with model: {:?}, max_iterations: {}",
+        normalized_path,
+        request.model,
+        max_iterations
+    );
+
+    let result = insight_generator
+        .generate_agentic_insight_for_photo(
+            &normalized_path,
+            request.model.clone(),
+            request.system_prompt.clone(),
+            request.num_ctx,
+            max_iterations,
+        )
+        .await;
+
+    match result {
+        Ok(()) => {
+            span.set_status(Status::Ok);
+            // Fetch the stored insight to return it
+            let otel_context = opentelemetry::Context::new();
+            let mut dao = insight_dao.lock().expect("Unable to lock InsightDao");
+            match dao.get_insight(&otel_context, &normalized_path) {
+                Ok(Some(insight)) => {
+                    let response = PhotoInsightResponse {
+                        id: insight.id,
+                        file_path: insight.file_path,
+                        title: insight.title,
+                        summary: insight.summary,
+                        generated_at: insight.generated_at,
+                        model_version: insight.model_version,
+                    };
+                    HttpResponse::Ok().json(response)
+                }
+                Ok(None) => HttpResponse::Ok().json(serde_json::json!({
+                    "success": true,
+                    "message": "Agentic insight generated successfully"
+                })),
+                Err(e) => {
+                    log::warn!("Insight stored but failed to retrieve: {:?}", e);
+                    HttpResponse::Ok().json(serde_json::json!({
+                        "success": true,
+                        "message": "Agentic insight generated successfully"
+                    }))
+                }
+            }
+        }
+        Err(e) => {
+            let error_msg = format!("{:?}", e);
+            log::error!("Failed to generate agentic insight: {}", error_msg);
+            span.set_status(Status::error(error_msg.clone()));
+
+            if error_msg.contains("tool calling not supported")
+                || error_msg.contains("model not available")
+            {
+                HttpResponse::BadRequest().json(serde_json::json!({
+                    "error": format!("Failed to generate agentic insight: {}", error_msg)
+                }))
+            } else {
+                HttpResponse::InternalServerError().json(serde_json::json!({
+                    "error": format!("Failed to generate agentic insight: {}", error_msg)
+                }))
+            }
+        }
+    }
+}
+
 /// GET /insights/models - List available models from both servers with capabilities
 #[get("/insights/models")]
 pub async fn get_available_models_handler(

src/ai/mod.rs

@@ -8,8 +8,8 @@ pub mod sms_client;
 #[allow(unused_imports)]
 pub use daily_summary_job::{generate_daily_summaries, strip_summary_boilerplate};
 pub use handlers::{
-    delete_insight_handler, generate_insight_handler, get_all_insights_handler,
+    delete_insight_handler, generate_agentic_insight_handler, generate_insight_handler,
-    get_available_models_handler, get_insight_handler,
+    get_all_insights_handler, get_available_models_handler, get_insight_handler,
 };
 pub use insight_generator::InsightGenerator;
 pub use ollama::{ModelCapabilities, OllamaClient};

src/main.rs

@@ -1189,6 +1189,7 @@ fn main() -> std::io::Result<()> {
                 .service(get_file_metadata)
                 .service(memories::list_memories)
                 .service(ai::generate_insight_handler)
+                .service(ai::generate_agentic_insight_handler)
                 .service(ai::get_insight_handler)
                 .service(ai::delete_insight_handler)
                 .service(ai::get_all_insights_handler)