[patch-goblin]

Restores the requested Feature Tree pane shortcut as an editable registry keybinding owned by the featureTree extension.

• Register Toggle Feature Tree with default Shift+T in modeling/sketch contexts, using the layout service and existing pane toggle helper to show/hide the entire operations-and-bodies pane.
• Expose the binding through the normal Keybindings settings so users can rebind or unbind it. Text-editing contexts keep uppercase T for typing.
• Remove the old area-level shortcut declaration so legacy simple-pane layouts cannot register a competing, non-editable handler. Other sidebar shortcuts are unchanged.

History

The shortcut really existed: git blame traces keybinding: 'Shift + T' to the original Feature Tree PR, #4782 on December 20, 2024. #9899 converted the pane from Simple to Splits to contain operations and bodies. The legacy PaneButton shortcut path still only resolves Simple area definitions, leaving the old declaration disconnected for the split pane.

Regression evidence and review notes

51 focused unit tests pass, including default/Playwright layout toggle round trips, sibling preservation, typing/context exclusions, and rebinding/unbinding through the settings-row conversion. Removing the new keymap contribution produces seven expected failures (unmatched shortcut and missing editable settings row); restoring it passes. Targeted ESLint/Biome and the repository circular-dependency check pass. Two independent read-only reviews found no blocking issues.

Full npm run tsc is not clean in this fresh checkout because of missing generated Rust/Wasm bindings and dependency declarations, including vscode-languageserver-protocol. A detached unchanged main checkout produces exactly the same diagnostics, with no added errors from this change.

The unit tests exercise registry contributions, keymap matching, settings conversion, and layout mutation, not the full UI keyboard dispatcher or disk persistence. Before marking ready, smoke-test Shift+T twice, uppercase T while typing, and a rebound shortcut after settings reload. No engine-backed UI test was run locally.

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Project	Deployment	Actions	Updated
modeling-app	Ready	Preview	Sep 17, 2026 12:23pm UTC

[pierremtb]

The keybindings works great on Vercel but we're missing it in the tooltip I think?