* Hide new-tab browser toggles and align dark-mode button style
* Switch forced dark mode from dimming overlay to dark theme
* Add tri-state browser theme mode for embedded web view
* Hide browser theme menu chevron in toolbar
* Use outline icons for browser theme toggle
* Align browser theme icon tint with DevTools button
* Force monochrome rendering for browser toolbar icons
* Reduce browser theme icon weight for visual parity
* Tune browser theme icon stroke for perceptual color match
* Force flat SF Symbol color rendering for toolbar icons
* Use button popover for browser theme selector
* Add tab color feature to sidebar workspaces
Lets users assign a custom background color to any sidebar workspace tab
via a right-click "Tab Color" submenu. The primary motivation is working
across multiple projects simultaneously — coloring tabs by project makes
it instant to visually locate the right workspace without reading the title.
- Workspace: adds `customColor: String?` (@Published hex string) and
`setCustomColor()` setter
- TabManager: adds `setTabColor(tabId:color:)` convenience method
- ContentView: 16-color dark palette (all luminance < 0.30, white text
always readable), `Color(hex:)` extension, `coloredCircleImage(hex:)`
helper to render bitmapped NSImage circles (needed because macOS menus
strip SwiftUI foregroundColor from SF Symbols), updated `backgroundColor`
to use custom color at full/70%/35% opacity for active/inactive/
multi-selected states, "Tab Color" submenu in context menu with
"Clear Color" option, and a 1.5pt `Color.primary` border overlay on
the active tab for clear selection indication when custom colors are set
* Add workspace tab color schemes with settings and debug toggles
* Remove Kelly scheme and keep only original tab color palette
* Preserve neutral grayscale when brightening tab colors
* Harden UpdatePill UI test polling timeouts
---------
Co-authored-by: Andreas Fruth <andreas.fruth@gmail.com>
* Address PR 242 follow-ups for titlebar and browser background
* Restore titlebar border per follow-up scope
* Refresh browser under-page color with Ghostty opacity
* Browser: theme blank page fallback for about:blank
* Browser: keep new tabs webview-less until first nav
* Fix manual unread clear race on focused tab
* Add mark-as-read tab action and show ring for manual unread
* Flash then clear manual unread on tab focus
