feat: add agent selector to UI and support direct agent assignment

- Added an agent selector (Auto, Claude, Gemini) to the Start Next Task button.
- Updated the backend to pass query parameters as environment variables to scripts.
- Modified the executor pool to skip classification when a specific agent is requested.
- Added --agent flag to claudomator start command.
- Updated tests to cover the new functionality.

3 files changed, 31 insertions, 1 deletions

diff --git a/internal/api/scripts.go b/internal/api/scripts.go
index 822bd32..8db937b 100644
--- a/internal/api/scripts.go
+++ b/internal/api/scripts.go
@@ -4,7 +4,9 @@ import (
 	"bytes"
 	"context"
 	"net/http"
+	"os"
 	"os/exec"
+	"strings"
 	"time"
 )
 
@@ -33,6 +35,12 @@ func (s *Server) handleScript(w http.ResponseWriter, r *http.Request) {
 	defer cancel()
 
 	cmd := exec.CommandContext(ctx, scriptPath)
+	cmd.Env = os.Environ()
+	for k, v := range r.URL.Query() {
+		if len(v) > 0 {
+			cmd.Env = append(cmd.Env, "CLAUDOMATOR_"+strings.ToUpper(k)+"="+v[0])
+		}
+	}
 
 	var stdout, stderr bytes.Buffer
 	cmd.Stdout = &stdout
diff --git a/internal/api/server.go b/internal/api/server.go
index df35536..163f2b8 100644
--- a/internal/api/server.go
+++ b/internal/api/server.go
@@ -488,9 +488,10 @@ func (s *Server) handleGetTask(w http.ResponseWriter, r *http.Request) {
 	}
 	writeJSON(w, http.StatusOK, t)
 }
-
 func (s *Server) handleRunTask(w http.ResponseWriter, r *http.Request) {
 	id := r.PathValue("id")
+	agent := r.URL.Query().Get("agent")
+
 	t, err := s.store.ResetTaskForRetry(id)
 	if err != nil {
 		if strings.Contains(err.Error(), "not found") {
@@ -505,6 +506,10 @@ func (s *Server) handleRunTask(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	if agent != "" && agent != "auto" {
+		t.Agent.Type = agent
+	}
+
 	if err := s.pool.Submit(context.Background(), t); err != nil {
 		writeJSON(w, http.StatusServiceUnavailable, map[string]string{"error": fmt.Sprintf("executor pool: %v", err)})
 		return
diff --git a/internal/api/server_test.go b/internal/api/server_test.go
index c90e3b3..2209a69 100644
--- a/internal/api/server_test.go
+++ b/internal/api/server_test.go
@@ -384,6 +384,23 @@ func TestRunTask_TimedOutTask_Returns202(t *testing.T) {
 	}
 }
 
+func TestRunTask_WithAgentParam(t *testing.T) {
+	srv, store := testServer(t)
+	createTaskWithState(t, store, "run-agent-param", task.StatePending)
+
+	// Request run with agent=gemini.
+	req := httptest.NewRequest("POST", "/api/tasks/run-agent-param/run?agent=gemini", nil)
+	w := httptest.NewRecorder()
+	srv.Handler().ServeHTTP(w, req)
+
+	if w.Code != http.StatusAccepted {
+		t.Fatalf("status: want 202, got %d; body: %s", w.Code, w.Body.String())
+	}
+
+	// Wait for the task to complete via the mock runner.
+	pollState(t, store, "run-agent-param", task.StateReady, 2*time.Second)
+}
+
 func TestRunTask_CompletedTask_Returns409(t *testing.T) {
 	srv, store := testServer(t)
 	createTaskWithState(t, store, "run-completed", task.StateCompleted)