fix(worktree): gate sessions on bootstrap readiness (#1762)

Co-authored-by: Leonid Skorobogatyy <bash@opencode.itc.local>
Co-authored-by: Bohdan Triapitsyn <artmore@protonmail.com>

packages/ui/src/lib/openchamberConfig.ts

@@ -33,6 +33,7 @@ function getRuntimeFilesAPI(): FilesAPI | null {
 export interface OpenChamberConfig {
   projectPath?: string;
   'setup-worktree'?: string[];
+  'setup-worktree-wait'?: boolean;
   projectNotes?: string;
   projectTodos?: OpenChamberProjectTodoItem[];
   projectPlanFiles?: OpenChamberProjectPlanFileLink[];
@@ -699,6 +700,15 @@ export async function saveWorktreeSetupCommands(project: ProjectRef, commands: s
   return updateOpenChamberConfig(project, { 'setup-worktree': filtered });
 }
 
+export async function getWorktreeSetupWaitEnabled(project: ProjectRef): Promise<boolean> {
+  const config = await readOpenChamberConfig(project);
+  return config?.['setup-worktree-wait'] === true;
+}
+
+export async function saveWorktreeSetupWaitEnabled(project: ProjectRef, enabled: boolean): Promise<boolean> {
+  return updateOpenChamberConfig(project, { 'setup-worktree-wait': enabled });
+}
+
 /**
  * Get this project's pinned draft welcome starters.
  */