Fix all issues from code/UX review

ISO structural:
- Move post-install.sh → airootfs/etc/calamares/ (it was never in the squashfs)
- Create airootfs/etc/skel/.config/ with all dotfiles (deploy path now works)
- Add iso/pacman.conf with [breadway] custom repo stub for calamares + bakery
- Add Calamares branding component (bos/branding.desc + show.qml)
- Add missing unpackfs.conf and mount.conf modules
- Add live-session autostart: getty autologin → bash_profile → Hyprland → calamares
- Add polkit rule for wheel-group snapper rollback (pkexec path)
- Remove wlroots from packages (bundled with Hyprland); add bakery to package list
- Fix modules-search path in settings.conf

Dotfiles:
- Rename dotfiles/hyprland/ → dotfiles/hypr/ (Hyprland reads ~/.config/hypr/)
- Fix deprecated shadow options: drop_shadow/shadow_range → shadow { } block

bos-settings Rust:
- Replace glib::MainContext::channel (removed in glib 0.19) with async_channel
- Stream bakery update output line-by-line instead of buffering all at once
- Fix zombie processes: per-package update buttons now wait() in a thread
- Fix sidebar/stack mismatch at startup: select snapshots row to match default view
- Replace deprecated MessageDialog with AlertDialog (GTK 4.10+) throughout
- Use pkexec for snapper rollback so polkit handles privilege escalation
- Add confirmation dialog before delete snapshot (was missing, rollback had one)
- Add refresh button + repopulate after delete in snapshots view
- Add "Saved" / "Error: …" status label to every config view save button
- Add "Remove" buttons to breadbox contexts and breadcrumbs profiles
- Remove hardcoded model string from breadpad defaults
- Drop unused state mod; fix config_dir HOME fallback; fix zombie in editor launches

https://claude.ai/code/session_01WszGHvCmxgcyTwNSkfLF9P

iso/airootfs/etc/calamares/branding/bos/branding.desc

@@ -0,0 +1,29 @@
+---
+componentName: bos
+
+strings:
+    productName:         "Bread Operating System"
+    shortProductName:    "BOS"
+    version:             "rolling"
+    shortVersion:        "rolling"
+    versionedName:       "BOS (rolling)"
+    shortVersionedName:  "BOS"
+    bootloaderEntryName: "BOS"
+    productUrl:          "https://github.com/Breadway/bos"
+    supportUrl:          "https://github.com/Breadway/bos/issues"
+    knownIssuesUrl:      "https://github.com/Breadway/bos/issues"
+    releaseNotesUrl:     "https://github.com/Breadway/bos/releases"
+
+images:
+    productLogo:         "logo.png"
+    productIcon:         "logo.png"
+    productWelcome:      "languages.png"
+
+slideshow:               "show.qml"
+slideshowAPI:            2
+
+style:
+    sidebarBackground:   "#3b4252"
+    sidebarText:         "#eceff4"
+    sidebarTextSelect:   "#5e81ac"
+    sidebarTextHighlight:"#eceff4"

iso/airootfs/etc/calamares/branding/bos/show.qml

@@ -0,0 +1,43 @@
+/* BOS installer slideshow */
+import QtQuick 2.15
+import io.calamares.ui 1.0
+
+Presentation {
+    id: presentation
+
+    Slide {
+        anchors.fill: parent
+
+        Rectangle {
+            anchors.fill: parent
+            color: "#2e3440"
+
+            Column {
+                anchors.centerIn: parent
+                spacing: 20
+
+                Text {
+                    text: "Bread Operating System"
+                    color: "#eceff4"
+                    font.pointSize: 28
+                    font.bold: true
+                    anchors.horizontalCenter: parent.horizontalCenter
+                }
+
+                Text {
+                    text: "Installing your system…"
+                    color: "#88c0d0"
+                    font.pointSize: 16
+                    anchors.horizontalCenter: parent.horizontalCenter
+                }
+
+                Text {
+                    text: "Hyprland · bread · bakery · snapshots"
+                    color: "#616e88"
+                    font.pointSize: 12
+                    anchors.horizontalCenter: parent.horizontalCenter
+                }
+            }
+        }
+    }
+}