umputun / agterm / 30077812177

98%

push

github

feat(sidebar): show sidebar only in the active window (#285)

opt-in Interface setting: with multiple windows open, only the frontmost window shows its sidebar and every other collapses. Sidebar visibility follows window focus, so switching windows moves the sidebar with focus; switching to another app leaves every sidebar untouched. Off by default.

**Behavior**
- absolute rule, no per-window memory: a manual ⌃⌘S hide on the active window is transient and re-shows on refocus
- fires only when an agterm window becomes frontmost (never on resign), so app-switching doesn't touch any sidebar
- turning it on applies immediately; turning it off leaves background windows collapsed until reopened

**Implementation**
- `AppSettings.autoHideSidebarInactiveWindows` (nil = off), mirrored into `GhosttyApp` (the non-observable chrome-mirror pattern the other toggles use)
- host-free driver `WindowLibrary.applyInactiveWindowSidebarHiding()` sets the active window's sidebar visible and the rest hidden
- driven from `WindowAccessor.reportFrontmost` on every window activation, and once when the toggle flips on, so new-window and launch reconcile too
- companion fix: `acceptsFirstMouse` returns false while the setting is on, so the click that activates an inactive window doesn't press the terminal button and turn the mid-gesture sidebar-resize into a phantom selection
- lives under Settings ▸ Interface ▸ Multiple Windows

GUI-only, keep-in-sync exempt like the other settings toggles (the sidebar capability already has full control coverage via `sidebar` + `sidebarVisible`).

verified: host-free round-trip + driver tests (`swift test`, 1737 pass), app build + swiftlint strict clean, and by hand in a dev instance.

8 of 8 new or added lines in 2 files covered. (100.0%)

5912 of 6044 relevant lines covered (97.82%)

4974485.84 hits per line