What: Refactored credential storage from factory functions to singleton objects with memoized read operations.
Details:
- Keychain storage (
Hy1) and plaintext storage (pZ1) now singleton objects - Read operations memoized to avoid redundant file/keychain access
- Storage path computation cached via
jV0()helper - Explicit cache invalidation after
update()ordelete()ensures correctness - Improved performance through reduced object allocation and I/O operations
- No user-visible changes to behavior
- Evidence: Keychain singleton at line 378779, plaintext singleton at line 378823, path memoization at line 378818