Touch-safe read-only canvas mode to prevent accidental node resize/extend

Problem

On phones and touch-screen devices, precise finger interaction is difficult. Selecting a node currently exposes nearby affordances for resizing and extending the node (for example, creating a new node). These controls are easy to trigger accidentally during ordinary touch interaction.

Requested feature: global touch-safe / read-only interaction mode

Add a global setting/mode optimized for touch screens, conceptually a read-only or touch-safe mode. When enabled:

• Selecting a node should not expose or activate resize handles.
• Selecting a node should not expose or activate extend/create-node affordances.
• Accidental drags or taps on those editing controls should not mutate the canvas.
• Node selection should remain available for switching to the chat panel and moving/repositioning the node.
• The mode should apply globally and be easy to toggle, so it can be used consistently across touch devices.

The exact interaction policy for moving nodes should be defined carefully: moving/repositioning is explicitly desired, while resize/extend/edit affordances should be disabled.

Nice to have: single-tap panel switch

In this touch-safe mode, a single tap on a selected node could switch/open its chat panel. This is especially valuable on touch screens because double-tapping is less reliable and harder to perform precisely. If single-tap panel switching creates ambiguity with selection or dragging, define a clear gesture rule (for example, tap selects and opens the panel; drag moves without opening it).

Acceptance criteria

• A user can enable the global touch-safe/read-only mode.
• On touch devices, selecting nodes does not present resize or extend/create affordances that can be triggered accidentally.
• Node movement remains possible.
• Chat-panel access remains possible.
• The mode can be disabled to restore the normal editing interaction model.
• Ideally, a single tap opens or switches to the selected node's chat panel without requiring a double-tap.

Start by locating the canvas node-selection interactions, resize and extend/create affordances, chat-panel access, and the global settings entry point. Define the touch-safe toggle and gesture policy so selection, movement, and chat access remain possible while resize and extend actions cannot mutate the canvas; verify each acceptance criterion on touch input and after disabling the mode.