fix: wire up Cursor integration in installer (#1605)

* fix: wire up Cursor integration in installer — was incorrectly marked "coming soon"

CursorHooksInstaller.ts was fully built but never connected to the
installer. Set supported: true in IDE detection and call installCursorHooks
in the setup flow, matching the pattern used by other integrations.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* fix: wire up Cursor MCP configuration during install

PR review flagged that the hint says "hooks + MCP integration" but
configureCursorMcp() was never called during install. Now invoked
after hooks install with graceful fallback if MCP setup fails.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/npx-cli/commands/ide-detection.ts

@@ -116,7 +116,8 @@ export function detectInstalledIDEs(): IDEInfo[] {
       id: 'cursor',
       label: 'Cursor',
       detected: existsSync(join(home, '.cursor')),
-      supported: false,
+      supported: true,
+      hint: 'hooks + MCP integration',
     },
     {
       id: 'copilot-cli',