Standardise across machines; add genuinely-customised app config

Two passes, both aimed at a consistent experience rather than a faithful
snapshot of each machine's accidents.

Standardisation. Audited every host-layer config present on more than one
machine and asked whether the difference was intent or drift:
  - mpv was byte-identical; swayimg differed only because system76 still
    had the shipped default and the work laptop had the real config; bob
    differed by one setting the work laptop was simply missing.
  - user-dirs.dirs disagreed with BOTH machines and with zshenv, which has
    said $HOME/downloads all along. Standardised on that.
  - mimeapps.list is now the union of both machines' associations.
  - swaync's config and style are shared; only wallust's generated
    colors.css stays per host, alongside hypr's and waybar's.
All of the above moved to common/.

Dropped as pure state rather than config: gtk-2.0 (file-chooser geometry),
pavucontrol.ini (window size), zoom.conf (a per-install random_key) and
zoomus.conf (panel widths). gtk-3.0 stays per host — its bookmarks encode
the two different home directories.

App config. GIMP, inkscape, FreeCAD, cura, OrcaSlicer, LightBurn and OBS
all hold real settings, so a curated subset of each is now tracked:
settings, keybindings and user content, but not session state, tool
options, device lists or window geometry. kicad is skipped — both library
tables hold a single entry, i.e. untouched defaults.

Content lives once in common/ even when only one machine has the app; the
host configs decide who gets the link. That is the distinction that lets
53% of link sources be shared while the NAS still does not get GIMP.

Two exclusions on credential grounds: obs-studio/plugin_config holds a
websocket server_password, and gh is dropped entirely because `gh auth
login` writes a token into hosts.yml — now also blocked by name.

common/GIMP/2.10/colorrc

@@ -0,0 +1,20 @@
+# GIMP colorrc
+# 
+# This file holds a list of recently used colors.
+
+(color-history
+    (color-rgba 0.96261682242990654 0 0 1)
+    (color-rgba 1 1 1 1)
+    (color-rgba 0.20000000000000001 0.27843137254901962 0.27450980392156865 1)
+    (color-rgba 0.48627450980392156 0.59999999999999998 0.20000000000000001 1)
+    (color-rgba 0.5725490196078431 0.2196078431372549 0.14901960784313725 1)
+    (color-rgba 0.74117647058823533 0.45490196078431372 0.058823529411764705 1)
+    (color-rgba 0.12941176470588237 0.10588235294117647 0.13333333333333333 1)
+    (color-rgba 0.64705884456634521 0.24705882370471954 0.16862745583057404 1)
+    (color-rgba 0.80392158031463623 0.87450981140136719 0.62745100259780884 1)
+    (color-rgba 0.35294118523597717 0.49019607901573181 0.48627451062202454 1)
+    (color-rgba 0.078431372549019607 0.066666666666666666 0.082352941176470587 1)
+    (color-rgba 0.92549019607843142 0.60392156862745094 0.16078431372549021 1)
+    (color-rgba 0 0 0 1))
+
+# end of colorrc

common/GIMP/2.10/gimprc

@@ -0,0 +1,35 @@
+# GIMP gimprc
+# 
+# This is your personal gimprc file.  Any variable defined in this file takes
+# precedence over the value defined in the system-wide gimprc:
+# /etc/gimp/2.0/gimprc
+# Most values can be set within GIMP by changing some options in the
+# Preferences dialog.
+
+(import-raw-plug-in "${gimp_plug_in_dir}/plug-ins/file-raw-placeholder/file-raw-placeholder")
+(monitor-xresolution 108)
+(monitor-yresolution 108)
+(layer-new-name "Midground")
+(layer-add-mask-type copy)
+(fill-options
+    (style solid)
+    (antialias yes)
+    (feather no)
+    (feather-radius 10))
+(stroke-options
+    (style solid)
+    (antialias yes)
+    (feather no)
+    (feather-radius 10)
+    (method line)
+    (width 3)
+    (unit pixels)
+    (cap-style butt)
+    (join-style miter)
+    (miter-limit 10)
+    (dash-offset 0)
+    (dash-info 0)
+    (emulate-brush-dynamics no))
+
+
+# end of gimprc

common/GIMP/2.10/templaterc

@@ -0,0 +1,500 @@
+# GIMP templaterc
+# 
+# This file will be entirely rewritten each time you exit.
+
+(GimpTemplate "A0 (300 ppi)"
+    (width 9933)
+    (height 14043)
+    (unit millimeters)
+    (xresolution 300)
+    (yresolution 300)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+(GimpTemplate "A1 (300 ppi)"
+    (width 7016)
+    (height 9933)
+    (unit millimeters)
+    (xresolution 300)
+    (yresolution 300)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+(GimpTemplate "A2 (300 ppi)"
+    (width 4960)
+    (height 7016)
+    (unit millimeters)
+    (xresolution 300)
+    (yresolution 300)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+(GimpTemplate "A3 (300 ppi)"
+    (width 3508)
+    (height 4960)
+    (unit millimeters)
+    (xresolution 300)
+    (yresolution 300)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+(GimpTemplate "A4 (300 ppi)"
+    (width 2480)
+    (height 3508)
+    (unit millimeters)
+    (xresolution 300)
+    (yresolution 300)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+(GimpTemplate "A5 (300 ppi)"
+    (width 1748)
+    (height 2480)
+    (unit millimeters)
+    (xresolution 300)
+    (yresolution 300)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+(GimpTemplate "A6 (300 ppi)"
+    (width 1240)
+    (height 1748)
+    (unit millimeters)
+    (xresolution 300)
+    (yresolution 300)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+(GimpTemplate "A7 (300 ppi)"
+    (width 874)
+    (height 1240)
+    (unit millimeters)
+    (xresolution 300)
+    (yresolution 300)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+(GimpTemplate "B4 (300 ppi)"
+    (width 2953)
+    (height 4169)
+    (unit millimeters)
+    (xresolution 300)
+    (yresolution 300)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+(GimpTemplate "B5 (300 ppi)"
+    (width 2079)
+    (height 2953)
+    (unit millimeters)
+    (xresolution 300)
+    (yresolution 300)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+(GimpTemplate "B5-Japan (300 ppi)"
+    (width 2150)
+    (height 3035)
+    (unit millimeters)
+    (xresolution 300)
+    (yresolution 300)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+(GimpTemplate "US Letter (300 ppi)"
+    (width 2550)
+    (height 3300)
+    (unit inches)
+    (xresolution 300)
+    (yresolution 300)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+(GimpTemplate "US Legal (300 ppi)"
+    (width 2550)
+    (height 4200)
+    (unit inches)
+    (xresolution 300)
+    (yresolution 300)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+(GimpTemplate "88.9×50.8 US Business Card"
+    (icon-name "gimp-business-card")
+    (width 1050)
+    (height 600)
+    (unit millimeters)
+    (xresolution 300)
+    (yresolution 300)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+(GimpTemplate "85×55 Western Europe Business Card"
+    (icon-name "gimp-business-card")
+    (width 1004)
+    (height 650)
+    (unit millimeters)
+    (xresolution 300)
+    (yresolution 300)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+(GimpTemplate "90×50 Eastern Europe Business Card"
+    (icon-name "gimp-business-card")
+    (width 1063)
+    (height 591)
+    (unit millimeters)
+    (xresolution 300)
+    (yresolution 300)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+(GimpTemplate "90×55 Business Card (AU, IN etc.)"
+    (icon-name "gimp-business-card")
+    (width 1063)
+    (height 650)
+    (unit millimeters)
+    (xresolution 300)
+    (yresolution 300)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+(GimpTemplate "87×49 Vistaprint Business Card"
+    (icon-name "gimp-business-card")
+    (width 1028)
+    (height 579)
+    (unit millimeters)
+    (xresolution 300)
+    (yresolution 300)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+(GimpTemplate "Toilet paper (US, 300 ppi)"
+    (icon-name "gimp-toilet-paper")
+    (width 1350)
+    (height 1350)
+    (unit inches)
+    (xresolution 300)
+    (yresolution 300)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+(GimpTemplate "CD cover (300 ppi)"
+    (icon-name "media-optical")
+    (width 1429)
+    (height 1417)
+    (unit millimeters)
+    (xresolution 300)
+    (yresolution 300)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+(GimpTemplate "Web banner leaderboard 728x90"
+    (icon-name "gimp-web")
+    (width 728)
+    (height 90)
+    (unit pixels)
+    (xresolution 72)
+    (yresolution 72)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+(GimpTemplate "Web banner large rectangle 336×280"
+    (icon-name "gimp-web")
+    (width 336)
+    (height 280)
+    (unit pixels)
+    (xresolution 72)
+    (yresolution 72)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+(GimpTemplate "Web banner medium rectangle 300×250"
+    (icon-name "gimp-web")
+    (width 300)
+    (height 250)
+    (unit pixels)
+    (xresolution 72)
+    (yresolution 72)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+(GimpTemplate "Web banner large mobile 320×100"
+    (icon-name "gimp-web")
+    (width 320)
+    (height 100)
+    (unit pixels)
+    (xresolution 72)
+    (yresolution 72)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+(GimpTemplate "Web banner large skyscraper 300×600"
+    (icon-name "gimp-web")
+    (width 300)
+    (height 600)
+    (unit pixels)
+    (xresolution 72)
+    (yresolution 72)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+(GimpTemplate "1280×720 (HD 720p)"
+    (icon-name "gimp-video")
+    (width 1280)
+    (height 720)
+    (unit pixels)
+    (xresolution 72)
+    (yresolution 72)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+(GimpTemplate "1920×1080 (Full HD 1080p)"
+    (icon-name "gimp-video")
+    (width 1920)
+    (height 1080)
+    (unit pixels)
+    (xresolution 72)
+    (yresolution 72)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+(GimpTemplate "3840x2160 (4K UHD)"
+    (icon-name "gimp-video")
+    (width 3840)
+    (height 2160)
+    (unit pixels)
+    (xresolution 72)
+    (yresolution 72)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+(GimpTemplate "4096×2160 (Digital Cinema Initiatives 4K)"
+    (icon-name "gimp-video")
+    (width 4096)
+    (height 2160)
+    (unit pixels)
+    (xresolution 72)
+    (yresolution 72)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+(GimpTemplate "1366×768 HD"
+    (icon-name "gimp-display")
+    (width 1366)
+    (height 768)
+    (unit pixels)
+    (xresolution 72)
+    (yresolution 72)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+(GimpTemplate "1920×1200 WUXGA"
+    (icon-name "gimp-display")
+    (width 1920)
+    (height 1200)
+    (unit pixels)
+    (xresolution 72)
+    (yresolution 72)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+(GimpTemplate "2560x1600 WQXGA"
+    (icon-name "gimp-display")
+    (width 2560)
+    (height 1600)
+    (unit pixels)
+    (xresolution 72)
+    (yresolution 72)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+(GimpTemplate "3840×2160 4K UHD"
+    (icon-name "gimp-display")
+    (width 3840)
+    (height 2160)
+    (unit pixels)
+    (xresolution 72)
+    (yresolution 72)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+(GimpTemplate "Apple iPhone 6/7"
+    (icon-name "gimp-smartphone")
+    (width 750)
+    (height 1334)
+    (unit millimeters)
+    (xresolution 326)
+    (yresolution 326)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+(GimpTemplate "Apple iPhone 5"
+    (icon-name "gimp-smartphone")
+    (width 640)
+    (height 1136)
+    (unit millimeters)
+    (xresolution 326)
+    (yresolution 326)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+(GimpTemplate "Apple iPad 3&4, Air"
+    (icon-name "gimp-smartphone")
+    (width 2048)
+    (height 2732)
+    (unit millimeters)
+    (xresolution 264)
+    (yresolution 264)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+(GimpTemplate "Samsung Galaxy S6"
+    (icon-name "gimp-smartphone")
+    (width 1440)
+    (height 2560)
+    (unit millimeters)
+    (xresolution 577)
+    (yresolution 577)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+(GimpTemplate "Samsung Galaxy S5"
+    (icon-name "gimp-smartphone")
+    (width 1080)
+    (height 1920)
+    (unit millimeters)
+    (xresolution 360)
+    (yresolution 360)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+(GimpTemplate "Samsung Galaxy Tab 2&3 10,1 inch"
+    (icon-name "gimp-smartphone")
+    (width 800)
+    (height 1280)
+    (unit millimeters)
+    (xresolution 149)
+    (yresolution 149)
+    (resolution-unit inches)
+    (image-type rgb)
+    (precision u8-gamma)
+    (color-managed yes)
+    (color-profile NULL)
+    (fill-type background))
+
+# end of templaterc

common/GIMP/2.10/unitrc

@@ -0,0 +1,51 @@
+# GIMP units
+# 
+# This file contains the user unit database. You can edit this list with the
+# unit editor. You are not supposed to edit it manually, but of course you
+# can do.
+# This file will be entirely rewritten each time you exit.
+
+(unit-info "centimeters"
+    (factor 2.54)
+    (digits 2)
+    (symbol "cm")
+    (abbreviation "cm")
+    (singular "centimeter")
+    (plural "centimeters"))
+(unit-info "meters"
+    (factor 0.025399999999999999)
+    (digits 4)
+    (symbol "m")
+    (abbreviation "m")
+    (singular "meter")
+    (plural "meters"))
+(unit-info "feet"
+    (factor 0.083333000000000004)
+    (digits 4)
+    (symbol "'")
+    (abbreviation "ft")
+    (singular "foot")
+    (plural "feet"))
+(unit-info "yards"
+    (factor 0.027778000000000001)
+    (digits 4)
+    (symbol "yd")
+    (abbreviation "yd")
+    (singular "yard")
+    (plural "yards"))
+(unit-info "typogr. points"
+    (factor 72.269999999999996)
+    (digits 0)
+    (symbol "tpt")
+    (abbreviation "tpt")
+    (singular "typogr. point")
+    (plural "typogr. points"))
+(unit-info "typogr. picas"
+    (factor 6.0225)
+    (digits 1)
+    (symbol "tpc")
+    (abbreviation "tpc")
+    (singular "typogr. pica")
+    (plural "typogr. picas"))
+
+# end of units