[Gherkin]

Closes #136.

What changes

• A new All layers row under the column heads. It has one box per column: All, Tracks, Zones, Vias, Silk, Fab, Net. A box is ticked when the kind is on for every layer that has it, clear when it is off on all of them, and mixed otherwise. A click on a clear or mixed box turns it on everywhere. A click on a ticked box turns it off everywhere. Silk and Fab cover F and B only.
• The All box on each layer row works the same way over that row's kinds. It is no longer a separate switch. A layer is on while any of its kinds is on.

Mixed click

The issue asked what a click on a mixed box usually does. Most tri-state checkboxes (file managers, mail clients, tree views) turn everything on. That is also what the S, O and X style toggles here already did. This PR does the same.

Side effects of dropping the separate All flag

• A row that is off no longer keeps its kinds for later. Turning a row off and on again gives every kind.
• Unticking the last kind on a row turns the layer off. On F and B that also hides the pads.
• Net (highlighted nets on a layer that is off) now draws tracks, zones, vias and pads. It can no longer pick kinds, because an off layer has none ticked. netcopper=NAME:LETTERS in older links is still read; the letters are ignored. README and util.js say so.
• The 1-9 number keys and X still flip a layer between visible and off. On a mixed layer they turn it off, not fully on.
• Saved settings with the old all flag are migrated: a layer that was off has every kind off, a layer that was on keeps its kinds (or gets all of them if none was ticked).
• __pcbaTest.version is 3. state().layers[l].all is now whether the layer is on.

Tests

• New tests: the All layers row, the three states of a row All box, migration of saved rows with the old all flag.
• Changed tests: the ones that checked that kinds are kept under an off row, and that netcopper letters pick kinds.
• Full Playwright suite: 155 passed. One failure: "an inner layer checkbox changes both sides" timed out. That is the known flake in Inner layer checkbox test times out in a local full run with Firefox #72. It passed alone and in a later run of the five layer-related spec files (106 passed). npm run test:api passes.

🤖 Generated with Claude Code

https://claude.ai/code/session_01UCbPYsA5LYNX8HZaGGZCpK

[github-actions]

PR Preview Action v1.8.1
Preview removed because the pull request was closed.
2026-10-27 21:02 UTC

[Gherkin]

PR review, round 1

1. web/app.js:1780 — an old link with overlay=silk and no x-ray (e.g. side=F&overlay=silk) sets silk on the off side. A ticked kind now means "on", so B turns on with silk only. Before, B stayed off. Fixed: overlay only touches sides that are on. Test added in tests/browser/links.spec.js.

No other findings.