Add bash completion for pkica

Static completion rules for all pkica commands, options and option values,
plus unit, interactive (tmux) and --help reconciliation tests.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

bash-completion/tests/check_tree.sh

@@ -0,0 +1,55 @@
+#!/usr/bin/env bash
+# Сверка таблиц pkica.bash-completion с реальным выводом `pkica ... --help`.
+# Запуск (из WSL/Linux): bash tests/check_tree.sh [путь к pkica]
+# Без аргумента используется pkica из PATH.
+
+root=$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)
+pkica=${1:-$(command -v pkica)}
+[[ -x $pkica ]] || { echo "pkica not found: укажите путь аргументом"; exit 1; }
+
+# shellcheck disable=SC1091
+source "$root/pkica.bash-completion" || exit 1
+
+fail=0 nodes=0
+
+walk()
+{
+    local path=$1 help cmds opts expected_cmds expected_opts sub
+    help=$("$pkica" ${path#pkica} --help 2>&1)
+    nodes=$((nodes + 1))
+
+    cmds=$(awk '/^Commands:/{f=1;next} f&&/^$/{f=0} f&&/^  [a-z]/{print $1}' <<<"$help" |
+        tr '\n' ' ' | sed 's/ $//')
+    opts=$(awk '/^Options:/{f=1;next} /^(Commands:)?$/{f=0}
+        f&&/^  -/{s=$1; gsub(/-\?\|/,"",s); if($2 ~ /^</) s=s "="; printf "%s ", s}' <<<"$help" |
+        sed 's/ $//')
+
+    expected_cmds=${_pkica_cmds[$path]-}
+    expected_opts=${_pkica_opts[$path]:--h|--help}
+
+    if [[ $cmds != "$expected_cmds" ]]; then
+        fail=$((fail + 1))
+        printf 'MISMATCH commands [%s]\n  help:       %s\n  completion: %s\n' "$path" "$cmds" "$expected_cmds"
+    fi
+    if [[ $opts != "$expected_opts" ]]; then
+        fail=$((fail + 1))
+        printf 'MISMATCH options  [%s]\n  help:       %s\n  completion: %s\n' "$path" "$opts" "$expected_opts"
+    fi
+
+    for sub in $cmds; do
+        walk "$path $sub"
+    done
+}
+
+walk pkica
+
+# Узлы в таблицах, которых нет в утилите.
+for key in "${!_pkica_cmds[@]}" "${!_pkica_opts[@]}"; do
+    "$pkica" ${key#pkica} --help 2>&1 | grep -q "^Usage: $key " || {
+        fail=$((fail + 1))
+        printf 'UNKNOWN node in completion: [%s]\n' "$key"
+    }
+done
+
+echo "checked nodes: $nodes, mismatches: $fail"
+((fail == 0))