On This Day, photo overlays, and a lighter rendering engine

• Added On This Day — a new Smart Stream that surfaces photos taken on today's date in past years.
• Added photo overlays with date and location badges in Dark, Light, and Minimal styles, with six positions and crop-aware placement.
• Added folder-stream overlay support that reads date and location from EXIF metadata.
• Added HD, 4K, and 8K presets for one-click target-display configuration.
• Added Auto Image Size, which derives optimal serving resolution from target display and block size.
• Improved rendering performance — new Core Graphics engine cuts overlay memory from ~200 MB to ~20 MB per render.

HTTPS by default and clearer connection state

• Added a lock/unlock icon and tooltip to the menu bar so it's clear whether you're running HTTPS or HTTP.
• Improved default behavior — HTTPS is now on by default to meet DAKboard's URL Photos requirement.

Folder streaming and resilience updates

• Added local folder streaming support for libraries outside Apple Photos.
• Added folder-stream thumbnails and improved stream source handling.
• Improved Photos permission denial handling and introduced server lifecycle refactoring for stability.

Collections, stream controls, and reliability improvements

• Added collection editing and improved collection management workflows.
• Added sidebar search, sort, and stream control polish.
• Added deferred startup, improved indexing progress state, and HTTPS startup/keychain fixes.

Initial stream engine and Apple Photos support

• Added photo stream foundation with smart Apple Photos library filtering.
• Added HTTPS support with custom certificates and improved settings UX.
• Improved launch stability and crash/race-condition handling early in release lifecycle.