Add timeout to prevent hanging operations

Improvements

• CoreAdd support for URL-based instructions@spoons-and-mirrors
• CoreLoad OPENCODE_CONFIG_DIR AGENTS.md into the system prompt@ThomasGormley
• CoreFix title generation for subtask-only messages to extract actual user prompts instead of generic tool execution descriptions
• CoreEnsure 'name' isn't being sent in request body for custom agent
• CoreRestore skill filtering by agent permissions@malhashemi
• CoreAdd missing await for available skills in skill tool@mwolting
• CorePrevent Java Language Server path checks from throwing errors@T1mn
• CoreAdd automatic jp. prefix assignment for Tokyo region (ap-northeast-1)@ikeda-tomoya-swx
• CorePolish documentation markdown wording and capitalization@T1mn
• CoreFilter dead worktrees in core functionality
• CoreHandle cases where git is not available or initialized
• CoreUpgrade OpenTUI to v0.1.69 with text rendering performance improvements
• TerminalAdd frecency-based file autocomplete to CLI@galkatz373
• TerminalAdd keyboard shortcut 'c' to copy device code in OAuth flow@akinfelami
• TerminalFix sidebar title padding to prevent scrollbar edge case@ryanwyler
• DesktopCopy and paste in terminal was broken
• DesktopFix desktop documentation
• DesktopIncrease contrast in terminal text for better readability
• DesktopAdd view button to open files from review sidebar@justrau
• DesktopOpen review sidebar when selecting file from picker@justrau
• DesktopAdd middle-click to close tabs in review sidebar@justrau
• DesktopImproved web load performance through code splitting
• DesktopImprove scroll store performance in app
• DesktopUpdate Cargo.lock@Brendonovich
• DesktopAdd single-instance plugin to prevent multiple desktop windows@Junseo5
• DesktopMake subtasks clickable in the task list@OpeOginni