Maia: The social constellation

This is a major reliability update for publishing, along with performance improvements and fixes across MAIA. Publishing is now more reliable across Mastodon and Bluesky, particularly when using multiple accounts, scheduled posts, threads, and retries. • Improved multi-account publishing so posts always publish from the account they were created for, even if you switch accounts later. • More reliable scheduled publishing and retries, including better handling when publishing to multiple accounts and only some posts succeed. • Threads now save their publishing progress. If a thread is interrupted or fails partway through, MAIA can resume from the last successfully published post instead of publishing the entire thread again. • Scheduled posts now preserve the same publishing options as immediate posts, including Mastodon visibility, polls and replies, and Bluesky links, mentions, media, reply restrictions and quote settings. • Improved protection against duplicate posts during overlapping scheduling or retry operations. • More robust recovery from interrupted publishing operations and unexpected app termination. • Improved consistency between immediate and scheduled publishing. • Fixed an issue on Bluesky where opening a profile could unexpectedly change your timeline. • Improved Bluesky feed and profile navigation. • Improved account isolation when using multiple Mastodon or Bluesky accounts. • Faster feed processing and improved overall performance. • Numerous stability improvements, bug fixes and refinements throughout the app.