Agent Zero v2.4

Highlights

• Global model presets overhaul — Model presets are now a single global collection. Presets are reusable setups covering main, utility, and embedding models. Project-scoped preset definitions have been removed; scope configs now store only a preset name. Includes rename/retire propagation across plugin configs, saved chats, and live contexts, startup migration from remote or bundled fallback, and embedding-model support throughout the switcher and override APIs.
• Default model updated — The global default, Balance preset, and onboarding defaults now use OpenRouter's openai/gpt-5.6-terra.
• LaTeX rendering in chat — Standard inline and display TeX delimiters are now converted and rendered in chat messages, including agent-thought math. KaTeX font assets are bundled so math renders without missing local fonts.
• A0 Launcher host gateway integration — Added Launcher gateway protocol support with host access controls, file permission scoping (read/write/exec), sync-status integration, Computer Use approval routing, and reconnect/disconnect lifecycle management. Host access is now fully owned by A0 Launcher; the Core WebUI gateway menu has been removed.
• Editor improvements — Full-document editing replaces heading-based Markdown pagination. Plain text documents now get the same preview, formatting, save, and file-action toolbar as Markdown. Added keyboard undo/redo, file downloads, and safe archive extraction (ZIP, TAR, RAR, 7z).
• Desktop session hardening — LibreOffice saves now target the requested document window with content-change reporting. Fail-fast on dead XFCE startup, live X display probing, atomic session manifests, and XWD screenshot decoding via Pillow's raw decoder.

Improvements

• Notifications — Fixed notifications being skipped during state snapshots by capturing payloads with GUIDs under lock. Action-required notifications (plugin reload, update available) now persist until dismissed or acted on. Opening the Self Update modal auto-dismisses its toast.
• Model preset reset — Added a confirmed "Reset to default" action to the preset editor with proper draft refresh. Toast helper is resolved at action time so resets cannot abort prematurely.
• Goal handling — Active goals now continue through response attempts until completed or genuinely blocked. Goals reactivated by a terminal edit are automatically resumed with the revised objective.
• Slash commands — Known slash commands are now parsed in both prefix and trailing position.
• Code execution — Trailing framework status is treated as execution guidance rather than command output, preserving correct wait, reset, rerun, and continuation decisions.
• Secrets masking — Runtime .env values are now masked in tool results, history, logs, and streamed output via the agent-facing SecretsManager.
• Responses API metadata — Only durable continuation metadata is persisted, preventing history bloat from repeated prompts and raw payloads. Legacy AI message metadata is normalized on load.
• MCP tool aliases — Provider-safe Responses tool names are resolved back to canonical MCP names before dispatch, fixing lookup failures for tools like Google Workspace-style names.
• Browser settings — Host-browser discovery now accepts host:port and HTTP discovery addresses with preserved endpoint casing.
• Project model config — "Current project" config selection is correctly treated as inherited when no project-scoped config exists.
• File picker paths — Normalized File Browser picker paths so container paths are not doubled as /a0/a0/.
• Sync status indicator — Fixed overlapping connected/disconnected visuals after reconnects by rendering a single reactive SVG circle.
• WebUI extension loading — Serialized extension discovery requests to prevent embedded Chromium resource exhaustion; loading placeholders are always cleared after failures.
• Extension API — unified_call and unified_turn are now decorated so community plugins can observe logical model-call boundaries.
• Skills CLI — Unified with runtime helpers so CLI behavior cannot drift from the runtime contract.
• Legacy logs removed — Per-process HTML log files under /a0/logs are no longer created. Existing legacy log directories are cleaned up automatically during startup migration.
• Progress indicator cleanup — Removed redundant progress cue DOM wrapper and associated CSS.

Breaking changes

• Model presets are now global only. Project-scoped preset definitions have been removed. Existing project presets will not be recognized; scope configs now reference a preset by name only. The Default preset is always present and immutable.
• Launcher Host access controls removed from Core WebUI. Host access changes must be made through A0 Launcher or the A0 CLI.
• Legacy filesystem logs removed. The /a0/logs directory and per-process HTML files are deleted on startup. Debugging output should be read from Docker logs.