v0.3.0

Changed

• Upgraded to Ruby 4.0.1 and Rails 8.1.2.
• Refactored FeedFetcher from 627 to 285 lines by extracting SourceUpdater, AdaptiveInterval, and EntryProcessor sub-modules.
• Refactored Configuration from 655 to 87 lines by extracting 12 dedicated settings files.
• Refactored ImportSessionsController from 792 to 295 lines by extracting 4 concerns.
• Refactored ItemCreator from 601 to 174 lines by extracting EntryParser and ContentExtractor.
• Replaced 66 eager requires with 11 explicit + 71 Ruby autoload declarations in lib/source_monitor.rb.
• Removed hard-coded LogEntry table name in favor of ModelExtensions.register.

Removed

• Dead code: SourcesController fetch/retry methods, duplicate new/create actions, duplicate test file.

Fixed

• Test isolation: scoped queries to prevent cross-test contamination in parallel runs.
• RuboCop: added frozen_string_literal pragma to all Ruby files; zero offenses.
• Coverage baseline reduced from 2117 to 510 uncovered lines (75.9% reduction).

Testing

• 841 tests, 2776 assertions, 0 failures.
• RuboCop: 369 files, 0 offenses.
• Brakeman: 0 warnings.