Manage Claude Code config + add Justfile via bombadil

Bring ~/.claude config under bombadil management across both machines:
- claude/shared/: converged settings.json (union of both hosts) and a single
  Catppuccin-powerline statusline merged from the two machines' versions
- claude/xps, claude/desktop: per-host agents/skills behind [profiles.xps]/
  [profiles.desktop]; each host links only its own via `bombadil link -p <theme> <host>`

Linked at file granularity because bombadil 4.2.0 can't create directory
symlinks for new targets, and to keep ~/.claude/{agents,skills} real dirs.

Add a Justfile (symlinked to ~/.justfile, usable via `just -g`) with link/
dark/light/watch/unlink/update/status/edit recipes; host auto-detected from
hostname. Recipes use exported shell vars to avoid bombadil's Tera engine
mis-parsing just's double-brace interpolation.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

claude/shared/statusline-command.sh

@@ -0,0 +1,95 @@
+#!/usr/bin/env bash
+# Claude Code statusLine — Catppuccin Mocha style matching starship.toml
+# Structure: [CAP_L][seg1][WEDGE][seg2][WEDGE]...[segN][CAP_R]
+
+input=$(cat)
+
+# Catppuccin Mocha palette
+red="#f38ba8"
+peach="#fab387"
+yellow="#f9e2af"
+sapphire="#74c7ec"
+lavender="#b4befe"
+crust="#11111b"
+
+RST=$'\033[0m'
+BGDEF=$'\033[49m'
+
+r_fg() { printf '\033[38;2;%d;%d;%dm' $((16#${1:1:2})) $((16#${1:3:2})) $((16#${1:5:2})); }
+r_bg() { printf '\033[48;2;%d;%d;%dm' $((16#${1:1:2})) $((16#${1:3:2})) $((16#${1:5:2})); }
+
+CAP_L=$''   # U+E0B6 — left rounded open cap
+WEDGE=$''   # U+E0B0 — right-pointing filled arrow (between segments)
+CAP_R=$''   # U+E0B4 — right rounded close cap
+
+# Parse JSON input
+cwd=$(printf '%s' "$input" | jq -r '.workspace.current_dir // .cwd // ""')
+model=$(printf '%s' "$input" | jq -r '.model.display_name // .model.id // ""')
+used_pct=$(printf '%s' "$input" | jq -r '.context_window.used_percentage // empty')
+
+# Substitute $HOME → ~, then truncate to last 3 path segments (starship truncation_length=3)
+display_cwd="${cwd/#$HOME/\~}"
+truncated_cwd=$(printf '%s' "$display_cwd" | awk -F'/' '{
+  n=NF
+  if (n <= 3) { print $0 }
+  else { printf "…/%s/%s/%s", $(n-2), $(n-1), $n }
+}')
+
+# Git ref: prefer the worktree name, then the live branch, then a short SHA
+git_branch=$(printf '%s' "$input" | jq -r '.worktree.name // .workspace.git_worktree // empty')
+if [ -z "$git_branch" ]; then
+  git_branch=$(GIT_OPTIONAL_LOCKS=0 git -C "$cwd" symbolic-ref --short HEAD 2>/dev/null \
+    || GIT_OPTIONAL_LOCKS=0 git -C "$cwd" rev-parse --short HEAD 2>/dev/null \
+    || echo "")
+fi
+
+# Build segment list: parallel arrays of (color, icon, text)
+declare -a colors=()
+declare -a icons=()
+declare -a texts=()
+
+colors+=("$red");      icons+=($'');  texts+=("$(whoami)")        # Manjaro
+colors+=("$peach");    icons+=($'');  texts+=("$truncated_cwd")   # folder
+if [ -n "$git_branch" ]; then
+  colors+=("$yellow"); icons+=($'');  texts+=("$git_branch")      # git branch
+fi
+colors+=("$sapphire"); icons+=($'');  texts+=("$model")           # sparkle ✦
+if [ -n "$used_pct" ]; then
+  ctx_display=$(printf "%.0f" "$used_pct")
+  if [ "$ctx_display" -ge 80 ]; then ctx_color="$red"; else ctx_color="$lavender"; fi
+  colors+=("$ctx_color"); icons+=($''); texts+=("${ctx_display}%") # clock
+fi
+
+# segment count via positional params — the brace-hash array-length form trips
+# bombadil's Tera renderer, which treats brace-hash as a comment opener
+set -- "${colors[@]}"; n=$#
+
+for i in $(seq 0 $((n-1))); do
+  color="${colors[$i]}"
+  icon="${icons[$i]}"
+  text="${texts[$i]}"
+
+  if [ "$i" -eq 0 ]; then
+    # Very first segment: print left rounded opening cap
+    printf '%b' "$RST"
+    r_fg "$color"
+    printf '%s' "$CAP_L"
+  else
+    # Transition from previous segment: wedge (fg=prev color, bg=this color)
+    prev="${colors[$((i-1))]}"
+    r_bg "$color"
+    r_fg "$prev"
+    printf '%s' "$WEDGE"
+  fi
+
+  # Segment body
+  r_bg "$color"
+  r_fg "$crust"
+  printf ' %s %s ' "$icon" "$text"
+done
+
+# Right rounded closing cap after last segment
+printf '%b' "$BGDEF"
+r_fg "${colors[$((n-1))]}"
+printf '%s' "$CAP_R"
+printf '%b' "$RST"