⏹️ Control & Chat Organization

Stop running agents cleanly — The chat bar now exposes a stop button while an agent is working, backed by a new /stop API that cancels the active context without deleting it.
Chat naming becomes a plugin — Renaming moves into the dedicated _chat_naming plugin with its own API, prompt, modal, Utility Model integration, and /rename command.
Important chats stay visible — The new _pin_to_top plugin keeps selected conversations at the top of the sidebar.

⚡ Faster, Extensible WebUI

Versioned assets load from cache — A build-time bundler discovers same-origin HTML, CSS, and JavaScript, while a service worker pre-populates a per-version cache for faster page loads.
Extensions join the bundle automatically — A WebUI extension manifest lets enabled extensions inject their entry files into the generated bundle and rendered index.
Long chats render progressively — Lazy message rendering and pagination reduce the work required to display large conversations.
Files move by drag and drop — The Files surface can move one or more files and folders into directories or the parent path with clear drop feedback.
Icons share one component — The new x-icon element replaces scattered icon markup across the WebUI and bundled plugins while retaining legacy Material icon compatibility.

Skills can inspect slash commands — Scoped command discovery now lives in the Commands plugin, and the skills tool can list or read effective slash-command definitions without invoking them.
The command picker ignores path slashes — Trailing slash tokens such as filesystem paths no longer open the composer command menu.
Codex response controls are visible — OAuth settings expose reasoning effort, reasoning summary, and answer verbosity, with reasoning effort defaulting to high.
Chat-only providers skip unsupported probes — Nebius, Z.AI, Z.AI Coding, and Gemini API OAuth now route directly through Chat Completions.

Malformed native tool output is repaired — Wrapper examples no longer leak into native function descriptions, and concatenated tool envelopes are repaired before they can appear as final text.
Native tool metadata stays accurate — Grouped memory tools, conditional vision support, rendered prompt variables, and compact descriptions now reach native Responses correctly.
Required tool calls remain explicit — Responses turns using Agent Zero function tools default to one required native call while preserving caller overrides and routing parallel work through Agent Zero's parallel tool.
Replayed and collapsed messages stay consistent — Cached process metadata preserves warning placement, short user messages no longer show an incorrect “Show More” control, and grouped-message pagination styling is aligned.

Readiness follows the effective model — The Welcome banner no longer warns about missing credentials in unrelated global presets.
Setup asks for the real URL — CLI setup conversations stay brief and require the user's exact Agent Zero address instead of suggesting a default port.
Recovery gets more room — The default consecutive unusable-response threshold increases to five, with matching settings copy and documentation.
Small surfaces are cleaner — The login page uses a larger logo with less text, and Launcher links now point to the published v1.5 assets and notes.