v0.13.0

Changelog

• 94f9662 Sign and notarize macOS release binaries via rcodesign
• f5c7675 Make Issue.BlockedBy and .Related symmetric across declaration direction
• e977d4d Return all matches for searches by bare hash
• 56190d8 Improve TUI: Explore/Followers, Memo promote/sync, PR stack ops, Identity config, LFS check fix, Board item move
• 69b15fc Add opt-in periodic auto-fetch to the TUI
• 34f4053 Standardize pm/release/review config writes on gitmsg helpers; trim PM board prefs
• ba41e73 Overhaul ARCHITECTURE.md: worktree flow, refreshed layout, leaner reference
• 7259d86 Add import functionality to TUI
• 62244e8 Fix codeberg mirror URL casing and make mirror jobs non-blocking