v2.1.238

2.1.238

(☝️ Click to see full diff.)

+3,292 tokens

• NEW: Data: SDK subagent stats schema — Documents cumulative per-session Agent-tool subagent counts by launch mode, type, nesting, outcome, and refusal, including reset, background-lifecycle, remote-launch, and result-stream timing caveats.
• NEW: Data: Self-hosted runner deferred shutdown timing notice — Explains deferred session release and fallback drain timing, supervisor stop-timeout sizing, forced-kill consequences, and second-signal behavior.
• NEW: Data: VCS state changed branch field — Defines the optional best-effort branch hint for commit and push events, including per-branch events for multi-branch pushes and uncertain-attribution cases.
• NEW: Tool Description: Artifact live room guidance — Adds transient, at-most-once rooms for live Artifact viewers, with untrusted event handling, bounded room_send broadcasts, peer-status results, and guidance to use republishes or the artifact database for durable state.
• NEW: Tool Description: Artifact runtime verification guidance — Adds post-publish verify diagnostics for console output, uncaught errors, failed resources, and capability calls, while treating viewer-reported diagnostics as untrusted data and no-viewer results as inconclusive.
• Data: Artifact MCP connector guidance — Allows supported sessions to expose locally configured MCP servers to Artifacts as host:<server>, while warning that they work only for viewers with the same local server connected.
• Data: Self-hosted runner command help — Adds command- and file-backed Proxy-Authorization header injection for egress proxies, including per-connection refresh, child-process proxy rewriting, secret-handling, and orchestrator limitations.
• Data: Self-hosted runner command help and System Prompt: Self-hosted runner doctor — Document --defer-shutdown-max-min, which stops new assignments while attached sessions continue until release or the ceiling, then parks or drains them under explicit signal, grace-period, and supervisor-timeout rules.
• Data: VCS state changed event schema — Clarifies that a push updating several branches emits one push event per branch.
• Skill: Artifact PR review and Skill: Artifact PR review (composed publish flow) — Harden decision-island extraction by anchoring searches to the full JSON script opening tag and reading from its end, avoiding collisions with prose that merely mentions the island ID.
• Skill: Artifact document — Stops requiring in-page status chips and author, date, or version metadata, treats those details as Artifact-owned chrome, and removes the related self-checks.
• Skill: Design — Expands canvas authoring with no-human-in-loop defaults, visible direction-selection artboards, Main.dc.html handoff rules, data-visualization routing, factual sample-value constraints, print dimensions, frame-fit and optional browser checks, image-basename and generic-name validation, template-binding and per-artboard-state caveats, static-artboard guidance, and required file_path, description, and favicon metadata on every publish.
• Skill: Prototype — Makes Artifact verify the sanctioned post-publish runtime check when available and warns that an empty no-viewer result does not prove the demo works.
• System Prompt: Artifact comment result guidance, Tool Description: Artifact comments guidance, and Tool Parameter: Artifact comment actions guidance — Require Claude activation for both replying to and resolving a comment thread, leaving non-activated threads for the commenter to resolve even after Claude addresses them elsewhere.
• System Prompt: Artifact comment thread framing — Adds untrusted multi-file page markers to identify which Artifact file a thread anchors to, and explicitly avoids assuming the main page when attribution is degraded.
• System Prompt: Coordinator mode orchestration — Adds capability-aware Skill-tool guidance alongside the existing workflow-tool notes.
• System Reminder: Artifact auto-replies resumed, Tool Parameter: Artifact watch actions guidance, and Tool Description: Artifact publishing and update guidance — Distinguish interruption pauses that keep the watch from killed or unwatched stops, answer comments sent during a pause after resuming, and recognize an “already registered” result as evidence of a remote watch.
• System Reminder: Output style active — Escapes the displayed active-style value as untrusted text and reads the turn reminder from the active style configuration.
• Tool Description: Artifact publishing and update guidance and Tool Description: Artifact runtime capabilities guidance — Document per-artifact browser storage for lightweight per-viewer conveniences, require failure-safe access, and prefer shared runtime capabilities for state that must be durable, cross-viewer, or readable by Claude.