refactor(cli): remove unused imports and variables

Eliminates no-unused-vars warnings across the CLI package by dropping
dead type imports, unused destructured helpers, and simplifying try/catch
blocks whose caught errors and intermediate results were never read.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

packages/cli/src/project-context.ts

@@ -6,7 +6,7 @@
  */
 
 import { TaskStore, type RegisteredProject, CentralCore, GlobalSettingsStore } from "@fusion/core";
-import { isAbsolute, resolve, dirname } from "node:path";
+import { resolve, dirname } from "node:path";
 import { existsSync } from "node:fs";
 
 /** Project context for CLI operations */