v0.2.3

• Added built-in Linear and Notion integrations that the agent drives from Python in the kernel (no new agent tools); each is a bundled skill that talks to the service's official MCP server and auto-discovers its tools. They ship disabled and turn on after you sign in via the Services tab in /login or /mcp login, with credentials stored in the existing auth.json (#280).
• Added an attach-image skill that loads an on-disk image (PNG, JPEG, GIF, WebP) into the model's context as a viewable attachment so a vision-capable model can directly see screenshots, diagrams, charts, or scanned pages (#274).
• Changed subagents to be first-class sessions: opening a subagent now attaches to its own session and renders through the same rich chat UI as the main conversation instead of a laggy parent-rebuilt transcript, finished subagents stay viewable in the list and sort below running ones, and the detail view shows the subagent's own recap and animated working status (#282).
• Changed session lifecycle handling so the agents view now lists every live session (not only daemon-resident ones), fixing reports of sessions going missing; abandoned new chats that were never sent a message are discarded instead of lingering (#269).
• Changed the IPython kernel to stay alive across compaction: variables, imports, and helpers the agent defined are no longer wiped, and the model is instead told which names remain defined (#267).
• Changed local slash commands like /context, /system-prompt, /logs, /changelog, and /hotkeys to echo the typed command into the chat so their output is anchored to a visible command instead of floating (#270).
• Changed session recaps to use a non-reasoning model (Qwen3-30B instruct), which reliably closes the recap tag instead of occasionally surfacing a dangling "..." (#284).
• Changed the heartbeat scheduler to defer /heartbeat and internal heartbeat cron jobs while the target session is already working, rescheduling the next interval instead of piling a prompt onto a busy agent (#265).
• Changed Ctrl+O on IPython and bash cells to keep the same summary line in place and just attach the full code and output beneath it (aligned under the code gutter), instead of restructuring the block on expand (#288).
• Removed the "call at most one built-in tool per turn" instruction from the system prompt, allowing the agent to invoke multiple built-in tools in a single turn (#210).
• Fixed historical session replay re-emitting inline terminal image escape payloads; history now shows lightweight image fallback labels while live tool results still render images inline (#281).
• Fixed pressing back from a subagent opened directly from the agents view dropping you into the parent's chat; it now returns to the agents view, with a "back to agents" hint (#271).
• Fixed the agents view resetting the highlight to the first row when returning to it; selection now sticks to the session you had open across reorders and reattaches (#268).
• Fixed freshly created chats being titled by their session ID until their file flushed; they are now titled by their first prompt immediately (#264).
• Fixed opening a session from the agents view failing when its original working directory no longer exists; it now opens in a fallback directory with a notice instead of breaking (#287).