feat: add adaptive recording format selection based on codec

fix: support wav48 format in audio conversion worker

fix(s3): simplify error messages and eliminate duplication in diagnostics

fix: add missing SysinfoAPI script and correct response handling

chore: remove deprecated CHANGELOG.md

fix: provider toggle not persisting due to PHP boolean casting of form-data

fix: remove ineffective runtime lib copy from pbx_firmware

fix: add runtime check for gdisk fallback in firmware update

fix: resolve sgdisk failure during firmware update due to missing libpopt.so

Merge branch 'develop' of github.com:mikopbx/Core into develop

refactor: optimize file retrieval in WorkerS3Upload

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fix: prevent duplicate phone number in missed call notification when caller name is unknown

feat: add nginx location for serving avatar images from storage

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feat: migrate avatars to file storage and add separate RecordingStorage database

fix: allow time range crossing midnight in off-work times

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fix: revert incorrect case change in globals.php require

feat: add S3 sync status display and stats API endpoint