Add todo mode and replace the plan with TODO.md

internal/server/server.go

@@ -20,6 +20,7 @@ import (
 	"g.fc.run/misc/byre/internal/git"
 	"g.fc.run/misc/byre/internal/push"
 	"g.fc.run/misc/byre/internal/store"
+	"g.fc.run/misc/byre/internal/todo"
 )
 
 type Server struct {
@@ -272,6 +273,57 @@ func (s *Server) CreateTask(w http.ResponseWriter, r *http.Request, projectID st
 	writeJSON(w, http.StatusCreated, t)
 }
 
+func (s *Server) GetTodo(w http.ResponseWriter, r *http.Request, projectID string) {
+	p, err := s.store.GetProject(r.Context(), projectID)
+	if err != nil {
+		writeStoreError(w, err)
+		return
+	}
+
+	src, found, err := git.ReadFile(p.RepoPath, p.DefaultBranch, todo.File)
+	if err != nil {
+		writeError(w, http.StatusInternalServerError, err)
+		return
+	}
+	writeJSON(w, http.StatusOK, api.Todo{Exists: found, Items: todo.Parse(src)})
+}
+
+func (s *Server) StartTodoItem(w http.ResponseWriter, r *http.Request, projectID string) {
+	req := api.TodoStart{}
+	if !readJSON(w, r, &req) {
+		return
+	}
+
+	if strings.TrimSpace(req.Title) == "" {
+		writeError(w, http.StatusBadRequest, errors.New("title is required"))
+		return
+	}
+
+	p, err := s.store.GetProject(r.Context(), projectID)
+	if err != nil {
+		writeStoreError(w, err)
+		return
+	}
+
+	u, err := s.store.GetUser(r.Context(), actor(r))
+	if err != nil {
+		writeStoreError(w, err)
+		return
+	}
+
+	model := ""
+	if req.Model != nil {
+		model = *req.Model
+	}
+
+	t, err := s.agents.StartTodo(r.Context(), p, u, req.Title, model)
+	if err != nil {
+		writeAgentError(w, err)
+		return
+	}
+	writeJSON(w, http.StatusCreated, t)
+}
+
 func (s *Server) GetTask(w http.ResponseWriter, r *http.Request, taskID string) {
 	t, err := s.store.GetTask(r.Context(), taskID)
 	if err != nil {