feat(KB-640): add role editing UI and restore KB task prefix

- Add inline role editing to AgentListModal with clickable role icons
- Add handleRoleChange and handleRoleKeyDown handlers for role updates
- Persist view toggle (board/list) with localStorage alongside role editing
- Restore task prefix from FN back to KB for generated task IDs
- Restore branch naming from fusion/ back to kb/ for task branches
- Update branch name references in executor, merger, scheduler, and CLI
- Add touch gesture detection support to TaskCard component
- Update worktree grouping labels to use KB prefix

packages/cli/src/commands/dashboard.ts

@@ -71,7 +71,7 @@ export function getMergeStrategy(settings: Pick<Settings, "mergeStrategy">): Non
 }
 
 export function getTaskBranchName(taskId: string): string {
-  return `fusion/${taskId.toLowerCase()}`;
+  return `kb/${taskId.toLowerCase()}`;
 }
 
 function buildPullRequestTitle(task: Pick<TaskDetail, "id" | "title">): string {

packages/cli/src/commands/task.ts

@@ -1056,7 +1056,7 @@ export async function runTaskPrCreate(id: string, options: PrCreateOptions = {})
   }
 
   // Build branch name
-  const branchName = `fusion/${id.toLowerCase()}`;
+  const branchName = `kb/${id.toLowerCase()}`;
 
   // Build PR title
   let title: string;