Add local JSON daemon and route TUI/CLI through it.

A per-DataDir background process owns ticket JSON, history, and sync so
multiple TUI instances stay consistent; MCP token APIs are ready for phase 2.

Co-authored-by: Cursor <cursoragent@cursor.com>

internal/daemon/client/sync.go

@@ -0,0 +1,47 @@
+package client
+
+import (
+	"net/http"
+	"net/url"
+
+	"task/internal/ytsync"
+)
+
+// SyncPull runs daemon sync pull for projectID.
+func (c *Client) SyncPull(projectID string) (ytsync.Result, error) {
+	var out ytsync.Result
+	err := c.do(http.MethodPost, "/v1/sync/pull", map[string]string{"projectId": projectID}, &out)
+	return out, err
+}
+
+// SyncPush runs daemon sync push for projectID.
+func (c *Client) SyncPush(projectID string) (ytsync.Result, error) {
+	var out ytsync.Result
+	err := c.do(http.MethodPost, "/v1/sync/push", map[string]string{"projectId": projectID}, &out)
+	return out, err
+}
+
+// CreateMCPToken creates a new MCP token for projectID (plaintext once).
+func (c *Client) CreateMCPToken(projectID string) (token, createdAt string, err error) {
+	var out struct {
+		Token     string `json:"token"`
+		CreatedAt string `json:"createdAt"`
+	}
+	err = c.do(http.MethodPost, "/v1/projects/"+url.PathEscape(projectID)+"/mcp-token", map[string]any{}, &out)
+	return out.Token, out.CreatedAt, err
+}
+
+// RevokeMCPToken removes the MCP token for projectID.
+func (c *Client) RevokeMCPToken(projectID string) error {
+	return c.do(http.MethodDelete, "/v1/projects/"+url.PathEscape(projectID)+"/mcp-token", nil, nil)
+}
+
+// MCPTokenStatus returns whether a token is configured.
+func (c *Client) MCPTokenStatus(projectID string) (configured bool, createdAt string, err error) {
+	var out struct {
+		Configured bool   `json:"configured"`
+		CreatedAt  string `json:"createdAt"`
+	}
+	err = c.do(http.MethodGet, "/v1/projects/"+url.PathEscape(projectID)+"/mcp-token", nil, &out)
+	return out.Configured, out.CreatedAt, err
+}