Lataa TermCanvas 0.19.0

Added
- Smooth stepless zoom and pan with lerp interpolation for fluid canvas navigation
- OpenAI-compatible provider and provider preset definitions for agent runtime
- Agent session isolation, horizontal tab bar, stop button, and auto-scroll active tab
- IPC handlers, preload bridge, and AgentService for main-process agent runtime
- Summarizing indicator in terminal title bar
- CC hook-based lifecycle monitoring pipeline with StopFailure API error detection
- Versioned manifest for skill lifecycle management
- Scrollback buffer increased from 5k to 50k lines
Fixed
- Stashed terminals excluded from keyboard focus cycle and panToTerminal layout
- Native select replaced with custom dropdown for provider picker
- Hub pointer events passed through container to terminal below
- Collapsed hub dropdown no longer blocks terminal title bars
- Text cursor wildcard selector reverted to fix cursor override
- Stale customTitle cleared when session changes
- Summary OAuth auth fixed by replacing --bare with --no-session-persistence
- Socket bind awaited and fallback timer stored on hook runtime
- cleanupOldHydraSymlinks no longer deletes newly-created hydra symlink
Changed
- Agent migrated to unified provider config model