diff --git a/flake.lock b/flake.lock
index 9e61219..65b8f04 100644
--- a/flake.lock
+++ b/flake.lock
@@ -175,11 +175,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1744174375,
-        "narHash": "sha256-oxI9TLgnQbQ/WL0tIwVSIooLbXq4PW1QUhf5aQmXFgk=",
+        "lastModified": 1744777043,
+        "narHash": "sha256-O6jgTxz9BKUiaJl03JsVHvSjtCOC8gHfDvC2UCfcLMc=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "ef3a956f697525883b77192cbe208233ea0f8f79",
+        "rev": "7a6f7f4c1c69eee05641beaa40e7f85da8e69fb0",
         "type": "github"
       },
       "original": {
diff --git a/hosts/nixos/porthos/secrets/secrets.nix b/hosts/nixos/porthos/secrets/secrets.nix
index 425756c..b3812b4 100644
--- a/hosts/nixos/porthos/secrets/secrets.nix
+++ b/hosts/nixos/porthos/secrets/secrets.nix
@@ -81,6 +81,7 @@ in
   "pyload/credentials.age".publicKeys = all;
 
   "servarr/autobrr/session-secret.age".publicKeys = all;
+  "servarr/cross-seed/configuration.json.age".publicKeys = all;
 
   "sso/auth-key.age" = {
     owner = "nginx-sso";
diff --git a/hosts/nixos/porthos/secrets/servarr/cross-seed/configuration.json.age b/hosts/nixos/porthos/secrets/servarr/cross-seed/configuration.json.age
new file mode 100644
index 0000000..e9af03f
Binary files /dev/null and b/hosts/nixos/porthos/secrets/servarr/cross-seed/configuration.json.age differ
diff --git a/hosts/nixos/porthos/services.nix b/hosts/nixos/porthos/services.nix
index 561da27..96f15d3 100644
--- a/hosts/nixos/porthos/services.nix
+++ b/hosts/nixos/porthos/services.nix
@@ -148,6 +148,9 @@ in
       autobrr = {
         sessionSecretFile = secrets."servarr/autobrr/session-secret".path;
       };
+      cross-seed = {
+        secretSettingsFile = secrets."servarr/cross-seed/configuration.json".path;
+      };
       # ... But not Lidarr because I don't care for music that much
       lidarr = {
         enable = false;
diff --git a/modules/home/atuin/default.nix b/modules/home/atuin/default.nix
index 3f06263..dbd9690 100644
--- a/modules/home/atuin/default.nix
+++ b/modules/home/atuin/default.nix
@@ -8,6 +8,10 @@ in
 
     # I want the full experience by default
     package = mkPackageOption pkgs "atuin" { };
+
+    daemon = {
+      enable = my.mkDisableOption "atuin daemon";
+    };
   };
 
   config = lib.mkIf cfg.enable {
@@ -15,12 +19,18 @@ in
       enable = true;
       inherit (cfg) package;
 
+      daemon = lib.mkIf cfg.daemon.enable {
+        enable = true;
+      };
+
       flags = [
         # I *despise* this hijacking of the up key, even though I use Ctrl-p
         "--disable-up-arrow"
       ];
 
       settings = {
+        # Reasonable date format
+        dialect = "uk";
         # The package is managed by Nix
         update_check = false;
         # I don't care for the fancy display
diff --git a/modules/home/default.nix b/modules/home/default.nix
index c8183cf..4dbd510 100644
--- a/modules/home/default.nix
+++ b/modules/home/default.nix
@@ -8,6 +8,7 @@
     ./bluetooth
     ./calibre
     ./comma
+    ./delta
     ./dircolors
     ./direnv
     ./discord
@@ -23,6 +24,7 @@
     ./gtk
     ./htop
     ./jq
+    ./jujutsu
     ./keyboard
     ./mail
     ./mpv
diff --git a/modules/home/delta/default.nix b/modules/home/delta/default.nix
new file mode 100644
index 0000000..6970b78
--- /dev/null
+++ b/modules/home/delta/default.nix
@@ -0,0 +1,92 @@
+{ config, pkgs, lib, ... }:
+let
+  cfg = config.my.home.delta;
+in
+{
+  options.my.home.delta = with lib; {
+    enable = my.mkDisableOption "delta configuration";
+
+    package = mkPackageOption pkgs "delta" { };
+
+    git = {
+      enable = my.mkDisableOption "git integration";
+    };
+
+    jujutsu = {
+      enable = my.mkDisableOption "jujutsu integration";
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    assertions = [
+      {
+        # For its configuration
+        assertion = cfg.enable -> cfg.git.enable;
+        message = ''
+          `config.my.home.delta` must enable `config.my.home.delta.git` to be
+          properly configured.
+        '';
+      }
+      {
+        assertion = cfg.jujutsu.enable -> cfg.git.enable;
+        message = ''
+          `config.my.home.delta.jujutsu` relies on `config.my.home.delta.git`
+          being enabled.
+        '';
+      }
+    ];
+
+    home.packages = [ cfg.package ];
+
+    programs.git = lib.mkIf cfg.git.enable {
+      delta = {
+        enable = true;
+        inherit (cfg) package;
+
+        options = {
+          features = "diff-highlight decorations";
+
+          # Less jarring style for `diff-highlight` emulation
+          diff-highlight = {
+            minus-style = "red";
+            minus-non-emph-style = "red";
+            minus-emph-style = "bold red 52";
+
+            plus-style = "green";
+            plus-non-emph-style = "green";
+            plus-emph-style = "bold green 22";
+
+            whitespace-error-style = "reverse red";
+          };
+
+          # Personal preference for easier reading
+          decorations = {
+            commit-style = "raw"; # Do not recolor meta information
+            keep-plus-minus-markers = true;
+            paging = "always";
+          };
+        };
+      };
+    };
+
+    programs.jujutsu = lib.mkIf cfg.jujutsu.enable {
+      settings = {
+        merge-tools = {
+          delta = {
+            # Errors are signaled with exit codes greater or equal to 2
+            diff-expected-exit-codes = [ 0 1 ];
+          };
+        };
+
+        ui = {
+          diff = {
+            # Delta expects a `git diff` input
+            format = "git";
+          };
+
+          pager = "delta";
+        };
+      };
+    };
+  };
+}
diff --git a/modules/home/git/default.nix b/modules/home/git/default.nix
index c88008f..ca59a5f 100644
--- a/modules/home/git/default.nix
+++ b/modules/home/git/default.nix
@@ -42,34 +42,6 @@ in
 
     lfs.enable = true;
 
-    delta = {
-      enable = true;
-
-      options = {
-        features = "diff-highlight decorations";
-
-        # Less jarring style for `diff-highlight` emulation
-        diff-highlight = {
-          minus-style = "red";
-          minus-non-emph-style = "red";
-          minus-emph-style = "bold red 52";
-
-          plus-style = "green";
-          plus-non-emph-style = "green";
-          plus-emph-style = "bold green 22";
-
-          whitespace-error-style = "reverse red";
-        };
-
-        # Personal preference for easier reading
-        decorations = {
-          commit-style = "raw"; # Do not recolor meta information
-          keep-plus-minus-markers = true;
-          paging = "always";
-        };
-      };
-    };
-
     # There's more
     extraConfig = {
       # Makes it a bit more readable
diff --git a/modules/home/jujutsu/default.nix b/modules/home/jujutsu/default.nix
new file mode 100644
index 0000000..2cf6f64
--- /dev/null
+++ b/modules/home/jujutsu/default.nix
@@ -0,0 +1,128 @@
+{ config, pkgs, lib, ... }:
+let
+  cfg = config.my.home.jujutsu;
+
+  inherit (lib.my) mkMailAddress;
+in
+{
+  options.my.home.jujutsu = with lib; {
+    enable = my.mkDisableOption "jujutsu configuration";
+
+    package = mkPackageOption pkgs "jujutsu" { };
+  };
+
+  config = lib.mkIf cfg.enable {
+    assertions = [
+      {
+        # For `jj git` commands
+        assertion = cfg.enable -> config.my.home.git.enable;
+        message = ''
+          `config.my.home.jujutsu` relies on `config.my.home.git` being enabled.
+        '';
+      }
+    ];
+
+    programs.jujutsu = {
+      enable = true;
+
+      inherit (cfg) package;
+
+      settings = {
+        # Who am I?
+        user = {
+          name = "Bruno BELANYI";
+          email = mkMailAddress "bruno" "belanyi.fr";
+        };
+
+        aliases = {
+          jj = [ "util" "exec" "--" "jj" ];
+          # FIXME:
+          # * topo sort by default (I think? test it)
+          # * still not a big fan of the template
+          lol = [ "log" "-r" "..@" "-T" "builtin_log_oneline" ];
+          lola = [ "lol" "-r" "all()" ];
+          # TODO:
+          # * `pick` (https://github.com/jj-vcs/jj/issues/5446): [ "util" "exec" "--" "bash" "-c" "jj log -p -r \"diff_contains($1)\"" ]
+          # * `root`: `jj workspace root` (barely necessary then)
+        };
+
+        # FIXME: git equivalents
+        # blame = {
+        #   coloring = "repeatedLines";
+        #   markIgnoredLines = true;
+        #   markUnblamables = true;
+        # };
+        # FIXME: log colors should probably match git
+        # FIXME: patience diff?
+        # FIXME: fetch prune/pruneTags?
+        # FIXME: pull.rebase=true? Probably true TBH
+        # FIXME: push.default=simple? Probably true TBH
+        # FIXME: conflict style? ui.conflict-marker-style=git is diff3/zdiff3
+
+        # FIXME: from ma_9's config, plus my own stuff
+        # snapshot = {
+        #   auto-track = "none()";
+        # };
+        #
+        # ui = {
+        #   diff-editor = ":builtin"; # To silence hints
+        #   movement = {
+        #     edit = false;
+        #   };
+        # };
+
+        templates = {
+          # Equivalent to `commit.verbose = true` in Git
+          draft_commit_description = "commit_description_verbose(self)";
+        };
+
+        template-aliases = {
+          "commit_description_verbose(commit)" = ''
+            concat(
+              commit_description(commit),
+              "JJ: ignore-rest\n",
+              diff.git(),
+            )
+          '';
+          # FIXME: use `diff.summary()` instead? Supported by syntax highlighting
+          # See https://github.com/jj-vcs/jj/issues/1946#issuecomment-2572986485
+          # FIXME: tree-sitter grammar isn't in `nvim-treesitter` (https://github.com/kareigu/tree-sitter-jjdescription)
+          "commit_description(commit)" = ''
+            concat(
+              commit.description(), "\n",
+              "JJ: This commit contains the following changes:\n",
+              indent("JJ:    ", diff.stat(72)),
+            )
+          '';
+        };
+
+        "--scope" = [
+          # Multiple identities
+          {
+            "--when" = {
+              repositories = [ "~/git/EPITA/" ];
+            };
+            user = {
+              name = "Bruno BELANYI";
+              email = mkMailAddress "bruno.belanyi" "epita.fr";
+            };
+          }
+          {
+            "--when" = {
+              repositories = [ "~/git/work/" ];
+            };
+            user = {
+              name = "Bruno BELANYI";
+              email = mkMailAddress "ambroisie" "google.com";
+            };
+          }
+        ];
+      };
+    };
+
+    # To drop in a `local.toml` configuration, not-versioned
+    xdg.configFile = {
+      "jj/conf.d/.keep".text = "";
+    };
+  };
+}
diff --git a/modules/home/tmux/default.nix b/modules/home/tmux/default.nix
index 08b9202..82ceb3a 100644
--- a/modules/home/tmux/default.nix
+++ b/modules/home/tmux/default.nix
@@ -6,7 +6,7 @@ let
     (config.my.home.wm.windowManager != null)
   ];
 
-  mkTerminalFlags = opt: flag:
+  mkTerminalFeature = opt: flag:
     let
       mkFlag = term: ''set -as terminal-features ",${term}:${flag}"'';
       enabledTerminals = lib.filterAttrs (_: v: v.${opt}) cfg.terminalFeatures;
@@ -123,9 +123,9 @@ in
       }
 
       # Force OSC8 hyperlinks for each relevant $TERM
-      ${mkTerminalFlags "hyperlinks" "hyperlinks"}
+      ${mkTerminalFeature "hyperlinks" "hyperlinks"}
       # Force 24-bit color for each relevant $TERM
-      ${mkTerminalFlags "trueColor" "RGB"}
+      ${mkTerminalFeature "trueColor" "RGB"}
     '';
   };
 }
diff --git a/modules/home/vim/after/queries/gitcommit/highlights.scm b/modules/home/vim/after/queries/gitcommit/highlights.scm
new file mode 100644
index 0000000..05162c9
--- /dev/null
+++ b/modules/home/vim/after/queries/gitcommit/highlights.scm
@@ -0,0 +1,6 @@
+; extends
+
+; Highlight over-extended subject lines (rely on wrapping for message body)
+((subject) @comment.error
+  (#vim-match? @comment.error ".\{50,}")
+  (#offset! @comment.error 0 50 0 0))
diff --git a/modules/home/vim/plugin/numbertoggle.lua b/modules/home/vim/plugin/numbertoggle.lua
index 8042710..b1e3df2 100644
--- a/modules/home/vim/plugin/numbertoggle.lua
+++ b/modules/home/vim/plugin/numbertoggle.lua
@@ -22,13 +22,3 @@ vim.api.nvim_create_autocmd({ "BufLeave", "FocusLost", "InsertEnter", "WinLeave"
         end
     end,
 })
-
--- Never show the sign column in a terminal buffer
-vim.api.nvim_create_autocmd({ "TermOpen" }, {
-    pattern = "*",
-    group = numbertoggle,
-    callback = function()
-        vim.opt.number = false
-        vim.opt.relativenumber = false
-    end,
-})
diff --git a/modules/home/vim/plugin/signtoggle.lua b/modules/home/vim/plugin/signtoggle.lua
index 9765a81..3deca34 100644
--- a/modules/home/vim/plugin/signtoggle.lua
+++ b/modules/home/vim/plugin/signtoggle.lua
@@ -1,26 +1,21 @@
 local signtoggle = vim.api.nvim_create_augroup("signtoggle", { clear = true })
 
--- Only show sign column for the currently focused buffer
+-- Only show sign column for the currently focused buffer, if it has a number column
 vim.api.nvim_create_autocmd({ "BufEnter", "FocusGained", "WinEnter" }, {
     pattern = "*",
     group = signtoggle,
     callback = function()
-        vim.opt.signcolumn = "yes"
+        if vim.opt.number:get() then
+            vim.opt.signcolumn = "yes"
+        end
     end,
 })
 vim.api.nvim_create_autocmd({ "BufLeave", "FocusLost", "WinLeave" }, {
     pattern = "*",
     group = signtoggle,
     callback = function()
-        vim.opt.signcolumn = "no"
-    end,
-})
-
--- Never show the sign column in a terminal buffer
-vim.api.nvim_create_autocmd({ "TermOpen" }, {
-    pattern = "*",
-    group = signtoggle,
-    callback = function()
-        vim.opt.signcolumn = "no"
+        if vim.opt.number:get() then
+            vim.opt.signcolumn = "no"
+        end
     end,
 })
diff --git a/modules/nixos/services/servarr/autobrr.nix b/modules/nixos/services/servarr/autobrr.nix
index afb07f4..c3370cb 100644
--- a/modules/nixos/services/servarr/autobrr.nix
+++ b/modules/nixos/services/servarr/autobrr.nix
@@ -1,4 +1,4 @@
-# IRC-based
+# IRC-based indexer
 { config, lib, ... }:
 let
   cfg = config.my.services.servarr.autobrr;
@@ -40,6 +40,7 @@ in
     my.services.nginx.virtualHosts = {
       autobrr = {
         inherit (cfg) port;
+        websocketsLocations = [ "/api" ];
       };
     };
 
@@ -54,7 +55,7 @@ in
     environment.etc = {
       "fail2ban/filter.d/autobrr.conf".text = ''
         [Definition]
-        failregex = ^.*Auth: invalid login \[.*\] from: <HOST>$
+        failregex = "message":"Auth: Failed login attempt username: \[.*\] ip: <HOST>"
         journalmatch = _SYSTEMD_UNIT=autobrr.service
       '';
     };
diff --git a/modules/nixos/services/servarr/cross-seed.nix b/modules/nixos/services/servarr/cross-seed.nix
new file mode 100644
index 0000000..74f216a
--- /dev/null
+++ b/modules/nixos/services/servarr/cross-seed.nix
@@ -0,0 +1,96 @@
+# Automatic cross-seeding for video media
+{ config, lib, ... }:
+let
+  cfg = config.my.services.servarr.cross-seed;
+in
+{
+  options.my.services.servarr.cross-seed = with lib; {
+    enable = mkEnableOption "cross-seed daemon" // {
+      default = config.my.services.servarr.enableAll;
+    };
+
+    port = mkOption {
+      type = types.port;
+      default = 2468;
+      example = 8080;
+      description = "Internal port for daemon";
+    };
+
+    linkDirectory = mkOption {
+      type = types.str;
+      default = "/data/downloads/complete/links";
+      example = "/var/lib/cross-seed/links";
+      description = "Link directory";
+    };
+
+    secretSettingsFile = mkOption {
+      type = types.str;
+      example = "/run/secrets/cross-seed-secrets.json";
+      description = ''
+        File containing secret settings.
+      '';
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    services.cross-seed = {
+      enable = true;
+      group = "media";
+
+      # Rely on recommended defaults for tracker snatches etc...
+      useGenConfigDefaults = true;
+
+      settings = {
+        inherit (cfg) port;
+        host = "127.0.0.1";
+
+        # Inject torrents to client directly
+        action = "inject";
+        # Query the client for torrents to match
+        useClientTorrents = true;
+        # Use hardlinks
+        linkType = "hardlink";
+        # Use configured link directory
+        linkDirs = [ cfg.linkDirectory ];
+        # Match as many torrents as possible
+        matchMode = "partial";
+        # Cross-seed full season if at least 50% of episodes are already downloaded
+        seasonFromEpisodes = 0.5;
+      };
+
+      settingsFile = cfg.secretSettingsFile;
+    };
+
+    systemd.services.cross-seed = {
+      serviceConfig = {
+        # Loose umask to make cross-seed links readable by `media`
+        UMask = "0002";
+      };
+    };
+
+    # Set-up media group
+    users.groups.media = { };
+
+    my.services.nginx.virtualHosts = {
+      cross-seed = {
+        inherit (cfg) port;
+      };
+    };
+
+    services.fail2ban.jails = {
+      cross-seed = ''
+        enabled = true
+        filter = cross-seed
+        action = iptables-allports
+      '';
+    };
+
+    environment.etc = {
+      "fail2ban/filter.d/cross-seed.conf".text = ''
+        [Definition]
+        failregex = ^.*Unauthorized API access attempt to .* from <HOST>$
+        journalmatch = _SYSTEMD_UNIT=cross-seed.service
+      '';
+    };
+  };
+}
diff --git a/modules/nixos/services/servarr/default.nix b/modules/nixos/services/servarr/default.nix
index 409fcdc..dca57cf 100644
--- a/modules/nixos/services/servarr/default.nix
+++ b/modules/nixos/services/servarr/default.nix
@@ -7,6 +7,7 @@
   imports = [
     ./autobrr.nix
     ./bazarr.nix
+    ./cross-seed.nix
     ./jackett.nix
     ./nzbhydra.nix
     ./prowlarr.nix
diff --git a/modules/nixos/services/transmission/default.nix b/modules/nixos/services/transmission/default.nix
index ac8b24d..16d51e3 100644
--- a/modules/nixos/services/transmission/default.nix
+++ b/modules/nixos/services/transmission/default.nix
@@ -65,6 +65,8 @@ in
         # Proxied behind Nginx.
         rpc-whitelist-enabled = true;
         rpc-whitelist = "127.0.0.1";
+
+        umask = "002"; # To go with `downloadDirPermissions`
       };
     };