Waybar: add new memory widget

This causes a problem when using a terminal in Remote Agent Console.

.gitmodules

@@ -1,3 +1,6 @@
 [submodule "mattpocock-skills"]
 	path = mattpocock-skills
 	url = ssh://git@git.grosinger.net:22322/tgrosinger/mattpocock-skills.git
+[submodule "openscad"]
+	path = home/.agents/skills/openscad
+	url = git@github.com:ModelRift/openscad-skill.git

home/.config/atuin/config.toml

@@ -23,6 +23,6 @@ history_filter = [
 filters = [ "global", "host", "workspace", "directory" ]
 
 [tmux]
-enabled = true
+enabled = false
 width = "80%"
 height = "60%"

home/.config/fish/functions/dev-wt-pr.fish

@@ -30,9 +30,9 @@ function dev-wt-pr -d "Open a GitHub PR in a worktree in a new tmux window (Octo
 
   set -l main_wt_path (git worktree list --porcelain | head -1 | string replace "worktree " "")
   set -l parent_dir (dirname "$main_wt_path")
-  # Key the worktree on the PR number to stay unique and avoid slashes in
-  # branch names producing nested directories.
-  set -l wt_path "$parent_dir/$repo-pr-$pr_number"
+  # Group in the per-repo worktree container; key on the PR number to stay
+  # unique and avoid slashes in branch names producing nested directories.
+  set -l wt_path "$parent_dir/$repo.worktrees/pr-$pr_number"
 
   # Create the worktree if it doesn't already exist.
   if not test -d "$wt_path"

home/.config/fish/functions/dev-wt.fish

@@ -62,7 +62,9 @@ function __dev_wt_impl -a name
   if test -z "$wt_path"
     set -l main_wt_path (git worktree list --porcelain | head -1 | string replace "worktree " "")
     set -l parent_dir (dirname "$main_wt_path")
-    set wt_path "$parent_dir/$repo-$name"
+    # Group worktrees in a per-repo container so they don't look like sibling
+    # projects (e.g. ~/obsidian/community.worktrees/workers, not community-workers).
+    set wt_path "$parent_dir/$repo.worktrees/$name"
     set wt_branch "$name"
 
     if test -d "$wt_path"

home/.config/fish/functions/svg2gcode.fish

@@ -0,0 +1,19 @@
+# Requires vpype with gcode extension.
+#   uv tool install "vpype[all]" --with vpype-gcode
+function svg2gcode -d "Convert an SVG to gcode for the Shapeoko pen plotter using vpype" -a input
+    set -l output (string replace -r '\.svg$' '.gcode' $input)
+
+    vpype \
+        # Load the SVG into the pipeline (curves are linearized to polylines)
+        read $input \
+        # Join lines whose endpoints nearly touch into single paths
+        linemerge \
+        # Reorder paths to minimize pen-up travel between them
+        linesort \
+        # Randomize where each closed path starts, hiding the seam mark
+        reloop \
+        # Drop redundant points within the default deviation tolerance
+        linesimplify \
+        # Emit gcode using the "shapeoko_pen" profile from the vpype config
+        gwrite --profile shapeoko_pen $output
+end

home/.config/waybar/config.jsonc

@@ -23,7 +23,7 @@
         "network",
         "power-profiles-daemon",
         "cpu",
-        //"memory",
+        "custom/memtmp",
         //"temperature",
         "backlight",
         //"sway/language",
@@ -167,7 +167,14 @@
     "cpu": {
         "format": "{usage}% ",
         "tooltip": false,
-        "on-click": "alacritty -e /home/linuxbrew/.linuxbrew/bin/btop"
+        "on-click": "alacritty -e /home/tgrosinger/.local/share/mise/shims/btop"
+    },
+    "custom/memtmp": {
+        "exec": "bash $HOME/.config/waybar/memtmp.sh",
+        "return-type": "json",
+        "interval": 5,
+        "format": "{}",
+        "on-click": "alacritty -e /home/tgrosinger/.local/share/mise/shims/btop"
     },
     "memory": {
         "format": "{}% "

home/.config/waybar/memtmp.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+# Waybar custom module: available RAM (GiB) and current /tmp usage.
+#
+# Available RAM uses MemAvailable, the kernel's honest "allocatable without
+# swapping" figure. /tmp is tmpfs, so its used space is live RAM consumption;
+# df -h auto-scales the unit (it is usually in the MB range).
+set -euo pipefail
+
+MEM_ICON=$''
+TMP_ICON=$''
+
+avail_gib=$(awk '/^MemAvailable:/ {printf "%.1f", $2/1048576}' /proc/meminfo)
+read -r tmp_used tmp_size < <(df -h --output=used,size /tmp | awk 'NR==2 {print $1, $2}')
+
+printf '{"text":"%sG %s  %s %s","tooltip":"RAM available: %s GiB\\n/tmp used: %s of %s"}\n' \
+    "$avail_gib" "$MEM_ICON" "$tmp_used" "$TMP_ICON" \
+    "$avail_gib" "$tmp_used" "$tmp_size"

home/.config/waybar/style.css

@@ -1,7 +1,7 @@
 @import "latte.css";
 
 * {
-    font-family: 'JetBrainsMono';
+    font-family: 'JetBrainsMono Nerd Font';
     font-size: 13px;
 }
 
@@ -89,6 +89,7 @@ button:hover {
 #battery,
 #cpu,
 #memory,
+#custom-memtmp,
 #disk,
 #temperature,
 #backlight,