File-size decomposition (no behavior change). Move the pure, state-free helpers
isTransientDecryptError, computeRetryDelay (+ their transient-error tables and
MAX_DECRYPT_RETRY_DELAY_MS) and normalizeHexPubkey out into a new
js/services/hashtagPreferencesHelpers.js and import them back. HEX64_REGEX is now
imported by the helper module instead of the service.
hashtagPreferencesService.js: 1541 -> 1480 lines (back under its 1484 limit).
Baseline left at 1434 (file fits its original allowance again; not bumped up).
Build + full unit suite green.
Co-Authored-By: Claude Opus 4.8 <[email protected]>