tanin-icons: accent-reactive folder icon theme (replaces Papirus)

New package packaging/tanin-icons/ generating 5 thin themes Tanin-<accent>
that inherit Adwaita and recolour only the folder/place ramp to the muted
Fuji accent (HSL shift keeping per-stop lightness; 16px rasterised so the
size-exact inherited blue PNG can't win).

- style.py: _set_gsettings now also sets icon-theme=Tanin-<accent_key> so
  folders recolour live with the accent.
- desktop.py: hide Tanin-* from the manual icon picker (accent-driven, a
  manual pick would be overridden on the next accent change).
- panel.py: pin-add icon hint Papirus -> Adwaita.
- build/finish-tanin-repo.sh: tanin-icons in OWN_SIMPLE; AUR rebuilds add
  librewolf-bin, arch-update, timeshift-autosnap, xdg-terminal-exec, paru.
- camel.toml: icon_theme=Tanin-<accent>, icons=[adwaita], tanin-icons own
  package + the new rebuilt_aur entries.

Deliberately excludes unrelated in-flight work (calendar/gtklock/
online-accounts/overview-backdrop) still uncommitted in the tree.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

distro/camel.toml

@@ -31,7 +31,7 @@ bg         = "#0f0f0f"
 fg         = "#f0f0f0"
 ui_font    = "Inter"                # Medium
 icon_font  = "Iosevka Nerd Font"    # Material Design Icons (nf-md-*)
-icon_theme = "Papirus"              # dock app icons
+icon_theme = "Tanin-<accent>"       # Adwaita base + Fuji-accent folders (tanin-icons); set live by the accent picker
 
 # -----------------------------------------------------------------------------
 # Package sources. Standard software comes from the official Arch repos; only
@@ -108,6 +108,13 @@ pkgbuild = "packaging/tanin-libadwaita/PKGBUILD"   # exists
 status   = "ready (live-verified GTK4; GTK3 partial) + ships tanin-libadwaita.service (user, watch)"
 note     = "STATIC defaults + CLI (tanin-libadwaita {dark|light|auto|watch}) for greeter/first-boot. LIVE theming is driven by the taninux app: gui/style.py write_global_theme() regenerates ~/.config/gtk-{4.0,3.0}/gtk(.css)|libadwaita.css from the Appearance settings (dynamic accent + light/dark, surfaces #0f0f0f/#f0f0f0, pills). GTK4/libadwaita = full exact Fuji; GTK3/adw-gtk3 = light/dark + pills only (GTK3 @define-color is parse-time, so adw-gtk3's accent/surfaces can't be overridden — exact-Fuji GTK3 would need a standalone GTK3 theme)."
 
+[[packages.own]]
+name     = "tanin-icons"
+desc     = "Fuji-accent icon themes — Adwaita overlay, folders recoloured per accent (Tanin-<accent>)"
+pkgbuild = "packaging/tanin-icons/PKGBUILD"        # exists
+status   = "ready (live-verified: GTK resolves folder @48px svg + @16px png to Tanin-<accent>)"
+note     = "5 thin themes inheriting Adwaita; recolor.py HSL-shifts only the blue folder/place ramp to the muted Fuji hue (keeps per-stop lightness) + rasterises 16px so the size-exact inherited blue doesn't win. gui/style.py _set_gsettings now also sets icon-theme=Tanin-<accent_key>, so folders recolour live with the accent. Rebuild after an adwaita-icon-theme bump (reads /usr/share/icons/Adwaita at build). Replaces Papirus (dropped as 'too flat'); papirus-folders presets are saturated and couldn't match the muted Fuji accents."
+
 [[packages.own]]
 name     = "tanin-setup"
 desc     = "first-run: seed ~/.config (eww+niri) + session target + apply theme + enable follower"
@@ -149,10 +156,30 @@ name   = "calamares"
 reason = "GUI installer for the ISO — AUR-only, not in official repos"
 status = "in [tanin] (built without sudo — all makedeps were present)"
 
+[[packages.rebuilt_aur]]
+name   = "librewolf-bin"
+reason = "default browser — hard dep of tanin-desktop (AUR-only -bin package)"
+status = "in [tanin]; SECURITY: rebuild+republish on every LibreWolf release"
+
+[[packages.rebuilt_aur]]
+name   = "arch-update"
+reason = "update notifier/helper — hard dep of tanin-desktop"
+status = "in [tanin]"
+
+[[packages.rebuilt_aur]]
+name   = "timeshift-autosnap"
+reason = "auto-snapshot before pacman transactions — hard dep of tanin-desktop (pulls timeshift)"
+status = "in [tanin]"
+
+[[packages.rebuilt_aur]]
+name   = "xdg-terminal-exec"
+reason = "freedesktop terminal-exec resolver — hard dep of tanin-desktop"
+status = "in [tanin]"
+
 [[packages.rebuilt_aur]]
 name   = "paru (or paru-bin)"
-reason = "AUR helper — wanted preinstalled on the ISO; must be in [tanin] first"
-status = "TODO — not yet rebuilt; ISO packages.x86_64 keeps it commented until then"
+reason = "AUR helper — wanted preinstalled on the ISO; optdepend, not forced"
+status = "in [tanin]"
 
 # cliphist + cage are in `extra` (verified) — NOT rebuilt, pulled from official repos.
 
@@ -175,7 +202,7 @@ screenshot   = ["grim", "slurp"]
 packages     = ["flatpak", "pacman-contrib"]       # checkupdates, paccache
 security     = ["polkit"]
 fonts        = ["inter-font", "ttf-iosevka-nerd"]  # verify nerd-font pkg name
-icons        = ["papirus-icon-theme", "adwaita-icon-theme"]
+icons        = ["adwaita-icon-theme"]              # base; Fuji-accent folders come from own tanin-icons (inherits Adwaita)
 
 [packages.optional]
 # optdepends — installed on demand, never required to boot.