properties: copy the path, and copy the call that would set it

[zmaril]

Stacked on #121. Second of the Blender-review sequence — with two corrections to my own review.

Blender's property right-click has Copy Data Path, and it's there because the gap it closes is real: you're looking at a thing and you need the words that address it. Blender's words are Python. Ours are a JSON pointer and the command that writes it — which is the sentence someone hands an agent.

What's new

Field menu gains Copy data path (/accent) and Copy as command:

set_setting {"pointer":"/accent","value":"#5680c2"}

Info log rows gain a menu. Blender's Info editor shows every operator as the Python that ran it — that's what makes it more than a receipt, you can copy a line out of the log into a script. A row now copies as:

workspace_add {"name":"x"}

The MCP tool spelling, because the point is to paste it where an agent reads. tool_name moved out of the parity test to do it, so the spelling rule the test checks with is the one the UI shows. There's a test that every command's copied form names a tool the server actually answers.

Both go through the clipboard action the menu shim already had, so neither costs a message and neither needed a new mechanism.

Correction 1: reset-to-default already existed

I listed it as a gap in my review. It's been there since the widget kit landed — Field.default plus a "Reset to default" row. My mistake.

What was missing: /theme was the one field with no default, so it alone had no reset row. Fixed.

Correction 2: writing the test for that found a real bug

/diff_split was offered in Preferences and absent from the settings document entirely. So it had no default to reset to, and every reader guessed one (.unwrap_or(false) in three places). Now declared.

The test holds field defaults and document defaults together:

/diff_split is not in the settings document

That's the drift that makes a reset button quietly reset to a value the daemon has never used — a control that looks like it works.

168 tests pass; fmt clean, clippy clean under -D warnings, docs/reference.md regenerated.

🤖 Generated with Claude Code

https://claude.ai/code/session_01XjCx5QszLXroGYh1YBxybw

[github-actions]

powderman preview

https://powderman-pr-122.fly.dev

The workbench, live: split/join/swap areas, the F3 palette, the widgets, themes, tooltips, the status bar.
The fleet and run execution are inert here (a Fly machine has no herdr) — this is for driving the interface.

On branches with the MCP server, point an agent at it:

claude mcp add --transport http powderman-preview "https://powderman-pr-122.fly.dev/mcp"

Updated on every push. Destroyed when this PR closes.