feat(runtime): add local codex daemon pairing

server/internal/handler/runtime.go

@@ -0,0 +1,68 @@
+package handler
+
+import (
+	"encoding/json"
+	"net/http"
+
+	db "github.com/multica-ai/multica/server/pkg/db/generated"
+)
+
+type AgentRuntimeResponse struct {
+	ID          string  `json:"id"`
+	WorkspaceID string  `json:"workspace_id"`
+	DaemonID    *string `json:"daemon_id"`
+	Name        string  `json:"name"`
+	RuntimeMode string  `json:"runtime_mode"`
+	Provider    string  `json:"provider"`
+	Status      string  `json:"status"`
+	DeviceInfo  string  `json:"device_info"`
+	Metadata    any     `json:"metadata"`
+	LastSeenAt  *string `json:"last_seen_at"`
+	CreatedAt   string  `json:"created_at"`
+	UpdatedAt   string  `json:"updated_at"`
+}
+
+func runtimeToResponse(rt db.AgentRuntime) AgentRuntimeResponse {
+	var metadata any
+	if rt.Metadata != nil {
+		json.Unmarshal(rt.Metadata, &metadata)
+	}
+	if metadata == nil {
+		metadata = map[string]any{}
+	}
+
+	return AgentRuntimeResponse{
+		ID:          uuidToString(rt.ID),
+		WorkspaceID: uuidToString(rt.WorkspaceID),
+		DaemonID:    textToPtr(rt.DaemonID),
+		Name:        rt.Name,
+		RuntimeMode: rt.RuntimeMode,
+		Provider:    rt.Provider,
+		Status:      rt.Status,
+		DeviceInfo:  rt.DeviceInfo,
+		Metadata:    metadata,
+		LastSeenAt:  timestampToPtr(rt.LastSeenAt),
+		CreatedAt:   timestampToString(rt.CreatedAt),
+		UpdatedAt:   timestampToString(rt.UpdatedAt),
+	}
+}
+
+func (h *Handler) ListAgentRuntimes(w http.ResponseWriter, r *http.Request) {
+	workspaceID := resolveWorkspaceID(r)
+	if _, ok := h.requireWorkspaceMember(w, r, workspaceID, "workspace not found"); !ok {
+		return
+	}
+
+	runtimes, err := h.Queries.ListAgentRuntimes(r.Context(), parseUUID(workspaceID))
+	if err != nil {
+		writeError(w, http.StatusInternalServerError, "failed to list runtimes")
+		return
+	}
+
+	resp := make([]AgentRuntimeResponse, len(runtimes))
+	for i, rt := range runtimes {
+		resp[i] = runtimeToResponse(rt)
+	}
+
+	writeJSON(w, http.StatusOK, resp)
+}