deps: pin playwright to ~1.60.0 to guard internal-subpath imports

playwrightLoader.ts imports playwright-core private internals
(lib/coreBundle), which carry no semver guarantee and were restructured
in the 1.59->1.60 minor bump. A caret range lets a fresh
`npm install -g latchkey` resolve a future minor that moves them again,
silently reintroducing ERR_PACKAGE_PATH_NOT_EXPORTED. Tilde allows only
1.60.x patches; minor playwright upgrades become deliberate, re-verified
changes.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: weishi-imbue

package-lock.json

@@ -61,7 +61,7 @@
     "@imbue-ai/detent": "^1.4.0",
     "@napi-rs/keyring": "^1.2.0",
     "commander": "^12.0.0",
-    "playwright": "^1.60.0",
+    "playwright": "~1.60.0",
     "zod": "^3.22.0"
   },
   "devDependencies": {