IPTV Checker Plugin Changelog: v0.4.0 to v0.5.0

[0.5.0]

New action: Cleanup Orphaned Tasks - allows users to remove legacy Celery periodic tasks from older plugin versions.
New action: Check Scheduler Status - provides a detailed diagnostic report on the background thread, cron validation, and timezone status.
Support for floating-point video bitrates and audio bitrates in metadata collection.
Enhanced CSV export header with cumulative statistics (total/alive/dead counts, format distribution, and average framerate).
Precision framerate rounding (1 decimal place) in stream analysis.

Refined scheduler logic: the background thread now automatically starts/restarts based on settings changes during the run method, rather than relying on manual file saves.
Improved "Load Group(s)" logic for large channel lists (>100 channels), now triggering a background thread with real-time progress tracking to prevent UI timeouts.
Standardized metadata clearing: dead streams now have their stream_stats explicitly set to an empty dictionary in the database.
Optimized time estimation logic for parallel vs. sequential stream checks.

Fixed an issue where the scheduler "enabled" toggle was required; v0.5.0 now triggers the scheduler based on the presence of cron expressions.
Improved ffprobe command reliability by using -read_intervals for frame/packet analysis instead of the incorrect -t flag.
Enhanced error handling for Dispatcharr metadata updates to prevent failures when stream objects are missing from the database.
Removed redundant settings file persistence in favor of the Dispatcharr native context settings.