feat(shell): curated git/nix/navigation aliases on by default

Extend the zsh shellAliases in shell.nix with a curated, on-by-default
set: navigation (.., ..., ....), a git block (g, gst, ga/gaa, gc/gcm,
gco/gsw, gb, gd/gds, gl/glg, gp/gpl, gf), a nix block (ns, nr, nfu, nfc,
nsearch, ngc), and path/reload. Same restraint as rg/fd: short where it
helps but never shadowing a real binary — the git set keeps off gs
(ghostscript), and the system/home rebuilds keep their sys-update /
home-update names rather than cryptic aliases.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

docs/ROADMAP.md

@@ -113,10 +113,14 @@ how to override it. Items marked ✓ are shipped.
   summer-day/night menu buttons now use its `U+F000` glyph with
   `font-family: Nomarchy` pinned in their CSS (Nerd Fonts also occupy
   U+F000, so the pin is required). The other themes have no logo button.
-- **Quality-of-life command aliases:** assemble a curated collection of
-  shell aliases/abbreviations for common operations (git, nix, navigation,
-  the nomarchy helpers, …), themed into the zsh shell experience
-  (`modules/home/shell.nix`). Decide scope and which to ship on by default.
+- ✓ **Quality-of-life command aliases:** a curated set ships on by default in
+  `modules/home/shell.nix` — navigation (`..`/`...`/`....`), a git block
+  (`g`, `gst`, `ga`/`gaa`, `gc`/`gcm`, `gco`/`gsw`, `gb`, `gd`/`gds`,
+  `gl`/`glg`, `gp`/`gpl`, `gf`), and a nix block (`ns`, `nr`, `nfu`, `nfc`,
+  `nsearch`, `ngc`), plus `path` and `reload`. Scope decision: short where it
+  helps but **never shadow a real binary** (same rule as rg/fd — the git block
+  deliberately avoids `gs`/ghostscript); system/home rebuilds keep their full
+  `sys-update`/`home-update` names rather than getting cryptic aliases.
 - **Theme-switch feedback:** ✓ the "rebuilding…" notification is now
   persistent (timeout 0) and replaced in place by "applied ✓" / failure
   via a synchronous tag, so a multi-minute switch never reads as a failed

modules/home/shell.nix

@@ -35,6 +35,9 @@ in
         ignoreSpace = true;
         expireDuplicatesFirst = true;
       };
+      # Curated, on by default. The rule (same as rg/fd above): short where
+      # it helps, but never shadow a real binary — so the git block keeps off
+      # `gs` (ghostscript), and nothing here masks a coreutil.
       shellAliases = {
         cat = "bat --paging=never";
         less = "bat";
@@ -42,8 +45,42 @@ in
         # eza enableZshIntegration aliases ls/ll/la; add a couple extras.
         lt = "eza --tree --level=2 --icons=auto --group-directories-first";
         tree = "eza --tree --icons=auto --group-directories-first";
+
+        # Navigation — climb without counting dots.
         ".." = "cd ..";
         "..." = "cd ../..";
+        "...." = "cd ../../..";
+
+        # Git — the verbs you retype all day.
+        g = "git";
+        gst = "git status -sb";
+        ga = "git add";
+        gaa = "git add -A";
+        gc = "git commit";
+        gcm = "git commit -m";
+        gco = "git checkout";
+        gsw = "git switch";
+        gb = "git branch";
+        gd = "git diff";
+        gds = "git diff --staged";
+        gl = "git log --oneline --graph --decorate -20";
+        glg = "git log --oneline --graph --decorate --all";
+        gp = "git push";
+        gpl = "git pull";
+        gf = "git fetch --all --prune";
+
+        # Nix — the flake/store verbs (system/home rebuilds already have the
+        # sys-update / home-update commands, so they're not re-aliased here).
+        ns = "nix shell"; # ns nixpkgs#ripgrep
+        nr = "nix run"; # nr nixpkgs#cowsay
+        nfu = "nix flake update";
+        nfc = "nix flake check";
+        nsearch = "nix search nixpkgs";
+        ngc = "nix-collect-garbage -d"; # user generations; sudo for system roots
+
+        # Misc.
+        path = "echo $PATH | tr ':' '\\n'";
+        reload = "exec zsh";
       };
     };