Initial commit: OpenClaw Skill Collection

6 custom skills (assign-task, dispatch-webhook, daily-briefing,
task-capture, qmd-brain, tts-voice) with technical documentation.
Compatible with Claude Code, OpenClaw, Codex CLI, and OpenCode.

openclaw-knowhow-skill/docs/infrastructure/platforms/mac/canvas.md

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+# Canvas
+
+## Overview
+
+The Canvas feature in OpenClaw is a lightweight visual workspace for HTML/CSS/JS, A2UI, and small interactive UI surfaces embedded in the macOS app using `WKWebView`.
+
+## Key Storage & Access
+
+Canvas files are stored in `~/Library/Application Support/OpenClaw/canvas/<session>/` and served through a custom `openclaw-canvas://` URL scheme that prevents directory traversal attacks.
+
+## Core Capabilities
+
+The agent can control Canvas through several operations:
+
+- Display or hide the panel
+- Navigate to local paths or external URLs
+- Execute JavaScript commands
+- Generate snapshot images
+
+## A2UI Integration
+
+The system supports A2UI v0.8 server-to-client messages including `surfaceUpdate`, `dataModelUpdate`, and `deleteSurface`. The newer `createSurface` (v0.9) remains unsupported.
+
+## Agent Triggering
+
+Canvas content can initiate new agent runs using deep links formatted as `openclaw://agent?message=<text>`, with confirmation prompts unless a valid key is supplied.
+
+## Security Features
+
+Canvas scheme blocks directory traversal; files must live under the session root. External URLs require explicit navigation permissions.