diff --git a/README.md b/README.md
index a6c0545..d7e0c55 100644
--- a/README.md
+++ b/README.md
@@ -361,7 +361,7 @@ make profile-reset          # go to the default profile (full)
 make new-skill name=myskill # scaffold agent + skill files
 ```
 
-`doctor.sh` checks: symlinks, GStack submodule, Playwright browser cache, prerequisites (git, Node, Cargo, Python, Claude Code), plugins, permissions, token budget, config consistency.
+`doctor.sh` checks: symlinks, GStack submodule, vendored skills (curl-pinned externals in `plugins.lock.json` + `link.sh`'s `EXTERNAL_SKILLS`, per the active profile), Playwright browser cache, prerequisites (git, Node, Cargo, Python, Claude Code), plugins, permissions, token budget, config consistency.
 
 ---
 
diff --git a/doctor.sh b/doctor.sh
index 48cc977..122bf71 100644
--- a/doctor.sh
+++ b/doctor.sh
@@ -22,6 +22,8 @@ VERSION=$(cat "$REPO/version.txt" 2>/dev/null || echo "unknown")
 source "$REPO/lib/detect-plugins.sh"
 # shellcheck source=lib/gstack-playwright.sh disable=SC1091
 source "$REPO/lib/gstack-playwright.sh"
+# shellcheck source=lib/doctor-vendored.sh disable=SC1091
+source "$REPO/lib/doctor-vendored.sh"
 
 echo ""
 echo "═══ claude-config doctor (v${VERSION}) ═══"
@@ -117,6 +119,38 @@ fi
 
 echo ""
 
+# ────────────────────────────────────────────────────────────
+# 2b. Vendored skills (curl-pinned externals: plugins.lock.json's
+# managed_by:curl entries + link.sh's EXTERNAL_SKILLS array — the OTHER
+# externals the GStack section above does not cover)
+# ────────────────────────────────────────────────────────────
+echo "── Vendored skills ──"
+# Mirrors lib/profile.sh's active_profile() (read_cache + the
+# blank/"none" -> DEFAULT_PROFILE fallback) without sourcing profile.sh
+# itself (its main() would run unconditionally) and without ever
+# invoking `claude`.
+_dv_active_profile=$(head -n1 "$REPO/.active-profile" 2>/dev/null \
+  | tr -d '[:space:]')
+[ -z "$_dv_active_profile" ] && _dv_active_profile="none"
+[ "$_dv_active_profile" = "none" ] && _dv_active_profile="full"
+# .active-profile's value is spliced into a lib/profiles/ path below —
+# reject anything outside the profile-name allowlist before that splice.
+if ! _dv_valid_profile_name "$_dv_active_profile"; then
+  warn ".active-profile has invalid value \"$_dv_active_profile\" — \
+falling back to profile full"
+  _dv_active_profile="full"
+fi
+_dv_profile_file="$REPO/lib/profiles/$_dv_active_profile.profile"
+if [ -f "$_dv_profile_file" ]; then
+  check_vendored_skills "$REPO" "$HOME/.claude" "$_dv_profile_file"
+else
+  # Active profile unresolved — every external is expected linked.
+  check_vendored_skills "$REPO" "$HOME/.claude"
+fi
+unset _dv_active_profile _dv_profile_file
+
+echo ""
+
 # ── Playwright browsers (read-only report; NOT nested under gstack — 2 of
 # the 3 registered installs are gsd-pi, not gstack) ──
 echo "── Playwright browsers ──"
diff --git a/lib/doctor-vendored.sh b/lib/doctor-vendored.sh
new file mode 100644
index 0000000..6cd9602
--- /dev/null
+++ b/lib/doctor-vendored.sh
@@ -0,0 +1,257 @@
+#!/usr/bin/env bash
+# ============================================================
+# lib/doctor-vendored.sh — doctor.sh check for the externally vendored
+# skills (curl-pinned externals in plugins.lock.json + link.sh's
+# EXTERNAL_SKILLS array). doctor.sh's "GStack submodule" section only
+# covers the gstack submodule — this covers the OTHER external skill
+# packs (emil-design-eng, the agent-skills trio, the five Mengto scroll
+# skills, and any name link.sh links with no lock entry at all, e.g.
+# frontend-design, design-motion-principles).
+#
+# One entry point, `check_vendored_skills <repo> <claude_home>
+# [profile_file]`, sourced and called by doctor.sh. Two things checked
+# per name in link.sh's EXTERNAL_SKILLS array:
+#   1. its file(s) exist under skills-external/<name>/ — expected file
+#      list comes from the matching plugins.lock.json entry (list shape
+#      -> ["SKILL.md"], dict shape -> its own file list, the
+#      emil-design-eng single-file "path" shape -> the key itself is the
+#      name, file "SKILL.md") or, when no lock entry names it at all,
+#      defaults to ["SKILL.md"].
+#   2. when the name is listed in <profile_file> (or no <profile_file>
+#      is passed — the "could not resolve the active profile" case),
+#      the <claude_home>/skills/<name> symlink points at
+#      <repo>/skills-external/<name>. A name absent from the profile is
+#      reported parked, not failed.
+#
+# Lock parsing via python3 argv (never string-spliced) — same pattern as
+# lib/vendor-skills.sh's _vendor_read_lock. link.sh's EXTERNAL_SKILLS
+# array is parsed with a single-purpose grep/sed, tolerant to it
+# spanning multiple lines.
+#
+# Every name/file pulled from the lock or link.sh is spliced into a
+# filesystem path (skills-external/<name>/<file>,
+# <claude_home>/skills/<name>): _dv_valid_item_name allowlists it first
+# (a rejection is a warn + skip, never a fail). doctor.sh's active
+# profile splices into lib/profiles/<name>.profile the same way, guarded
+# by _dv_valid_profile_name.
+#
+# No `set -euo pipefail` here (mirrors lib/vendor-skills.sh): a sourced
+# lib must not change the caller's shell options.
+# ============================================================
+
+# Fallback color helpers when sourced standalone (e.g. the test suite) —
+# skip anything the caller (doctor.sh) already defines, so doctor.sh's
+# ERRORS/WARNS counters keep working.
+if ! declare -F pass >/dev/null 2>&1; then
+  GREEN='\033[0;32m'; NC='\033[0m'
+  pass() { echo -e "  ${GREEN}✓${NC} $1"; }
+fi
+if ! declare -F fail >/dev/null 2>&1; then
+  RED='\033[0;31m'; NC='\033[0m'
+  fail() { echo -e "  ${RED}✗${NC} $1"; }
+fi
+if ! declare -F warn >/dev/null 2>&1; then
+  YELLOW='\033[1;33m'; NC='\033[0m'
+  warn() { echo -e "  ${YELLOW}⚠${NC}  $1"; }
+fi
+if ! declare -F info >/dev/null 2>&1; then
+  BLUE='\033[0;34m'; NC='\033[0m'
+  info() { echo -e "  ${BLUE}→${NC} $1"; }
+fi
+
+# _dv_lock_expectations <lockfile> — prints "<name>\t<file>" for every
+# skill named under a plugins.lock.json entry whose "managed_by" is
+# "curl": a bare list defaults each name to ["SKILL.md"]; a dict names
+# its own per-skill file list; an entry with neither (the
+# emil-design-eng single-file "path" shape) is itself the skill name,
+# file "SKILL.md" (the literal "path" value is upstream layout, not the
+# local dest — never used here). Reads the lockfile via argv only.
+# Every curl-managed entry's shape is validated ("skills" null, a list
+# of str, or a dict of str -> list of str; "path" a str when present)
+# BEFORE it is used, so a malformed entry is the same clean failure as
+# an unreadable file: rc 1, nothing printed. The python3 call's stderr
+# is discarded — no traceback ever reaches the caller's terminal, only
+# the rc reaches bash's decision.
+_dv_lock_expectations() {
+  python3 - "$1" 2>/dev/null <<'PY'
+import json, sys
+
+
+def valid_skills(skills):
+    """True when "skills" is null, a list of str, or a dict of
+    str -> list of str — the only shapes this lock format allows."""
+    if skills is None:
+        return True
+    if isinstance(skills, list):
+        return all(isinstance(name, str) for name in skills)
+    if isinstance(skills, dict):
+        return all(
+            isinstance(name, str) and isinstance(files, list)
+            and all(isinstance(f, str) for f in files)
+            for name, files in skills.items()
+        )
+    return False
+
+
+def skill_files(skills):
+    """Normalize an already-validated "skills" value to
+    {name: [file, ...]} — a bare list defaults to ["SKILL.md"]."""
+    if isinstance(skills, list):
+        return {name: ["SKILL.md"] for name in skills}
+    return skills
+
+
+try:
+    with open(sys.argv[1]) as f:
+        data = json.load(f)
+except (OSError, ValueError):
+    sys.exit(1)
+
+if not isinstance(data, dict):
+    sys.exit(1)
+
+for key, entry in data.items():
+    if not isinstance(entry, dict) or entry.get("managed_by") != "curl":
+        continue
+    skills, path = entry.get("skills"), entry.get("path")
+    if path is not None and not isinstance(path, str):
+        sys.exit(1)
+    if not valid_skills(skills):
+        sys.exit(1)
+    if skills is None:
+        print(f"{key}\tSKILL.md")
+        continue
+    for name, files in skill_files(skills).items():
+        for file in files:
+            print(f"{name}\t{file}")
+PY
+}
+
+# _dv_link_names <link_sh> — prints one name per line from link.sh's
+# EXTERNAL_SKILLS=(...) array, tolerant to it spanning multiple lines.
+# rc 1 (nothing printed) when the array marker is absent from the file.
+_dv_link_names() {
+  local link_sh="$1"
+  grep -qF 'EXTERNAL_SKILLS=(' "$link_sh" 2>/dev/null || return 1
+  awk '/EXTERNAL_SKILLS=\(/{f=1} f{print} f&&/\)/{exit}' "$link_sh" \
+    | sed -e 's/^.*EXTERNAL_SKILLS=(//' -e 's/).*$//' \
+    | tr -s '[:space:]' '\n' \
+    | grep -v '^$'
+}
+
+# _dv_profile_has <profile_file> <name> — true when a line's FIRST
+# whitespace-separated token equals <name> (the profile line's label
+# column — comments and the type column are ignored).
+_dv_profile_has() {
+  local profile_file="$1" name="$2"
+  awk -v n="$name" '$1 == n { found=1 } END { exit !found }' "$profile_file"
+}
+
+# _dv_valid_profile_name <name> — true when <name> matches the
+# profile-name allowlist (letters, digits, underscore, hyphen only).
+# <name> is spliced into "lib/profiles/<name>.profile" by doctor.sh, so
+# a path-traversal or separator character must never reach it.
+_dv_valid_profile_name() {
+  [[ "$1" =~ ^[A-Za-z0-9_-]+$ ]]
+}
+
+# _dv_valid_item_name <name> — true when <name> (a skill name from
+# link.sh's EXTERNAL_SKILLS array, or a relative file named by a
+# plugins.lock.json entry) matches the item-name allowlist (letters,
+# digits, dot, underscore, hyphen, slash), has no leading "/" and no
+# ".." path segment. <name> is spliced into a filesystem path under
+# skills-external/ or <claude_home>/skills/.
+_dv_valid_item_name() {
+  local name="$1"
+  [[ "$name" =~ ^[A-Za-z0-9._/-]+$ ]] || return 1
+  case "$name" in /*) return 1 ;; esac
+  case "/$name/" in */../*) return 1 ;; esac
+}
+
+# _dv_check_files <repo> <name> <lock_out> — every file <lock_out> (the
+# "<name>\t<file>" lines from _dv_lock_expectations) names for <name>,
+# defaulting to just "SKILL.md" when <lock_out> names it no file at all
+# (a link.sh-only name with no lock entry). fail per missing file. Each
+# <rel> is checked against the item-name allowlist before it is spliced
+# into a path — a rejected one is warned and skipped, not failed. rc 0
+# only when every expected (and allowlisted) file is present.
+_dv_check_files() {
+  local repo="$1" name="$2" lock_out="$3"
+  local files rel dest all_ok=1
+  files="$(awk -F'\t' -v n="$name" '$1 == n { print $2 }' <<<"$lock_out")"
+  [ -n "$files" ] || files="SKILL.md"
+  while IFS= read -r rel; do
+    [ -n "$rel" ] || continue
+    if ! _dv_valid_item_name "$rel"; then
+      warn "$name: lock file entry \"$rel\" rejected by the item-name \
+allowlist — skipped"
+      continue
+    fi
+    dest="$repo/skills-external/$name/$rel"
+    if [ ! -f "$dest" ]; then
+      fail "$name: skills-external/$name/$rel missing — run: make plugin"
+      all_ok=0
+    fi
+  done <<< "$files"
+  [ "$all_ok" -eq 1 ]
+}
+
+# _dv_check_link <claude_home> <repo> <name> <profile_file> — when
+# <profile_file> is non-empty and does not list <name>, reports it
+# parked (info), not failed. Otherwise (listed, or no <profile_file> was
+# passed — active profile could not be resolved, every external is then
+# expected linked) checks the <claude_home>/skills/<name> symlink points
+# at <repo>/skills-external/<name>.
+_dv_check_link() {
+  local claude_home="$1" repo="$2" name="$3" profile_file="$4"
+  local link target label
+  if [ -n "$profile_file" ] && ! _dv_profile_has "$profile_file" "$name"; then
+    label="$(basename "$profile_file" .profile)"
+    info "$name: parked by profile $label"
+    return
+  fi
+  link="$claude_home/skills/$name"
+  target="$repo/skills-external/$name"
+  if [ -L "$link" ] && [ "$(readlink "$link")" = "$target" ]; then
+    pass "$name: vendored + linked"
+  else
+    fail "$name: symlink missing/wrong — run: make link (or: bash \
+lib/profile.sh apply <profile>)"
+  fi
+}
+
+# check_vendored_skills <repo> <claude_home> [profile_file] — see the
+# file header. Either the lock or link.sh being unreadable (or a
+# malformed lock entry — _dv_lock_expectations rc 1) is a warn, never a
+# fail; link.sh unreadable skips the whole check (there is nothing to
+# iterate). Each <name> from link.sh is checked against the item-name
+# allowlist before it is spliced into a path — a rejected one is
+# warned and skipped, not failed.
+check_vendored_skills() {
+  local repo="$1" claude_home="$2" profile_file="${3:-}"
+  local lock_out names name
+
+  if ! lock_out="$(_dv_lock_expectations "$repo/plugins.lock.json")"; then
+    warn "plugins.lock.json unreadable or malformed (missing, invalid \
+JSON, or an entry with a bad \"skills\"/\"path\" shape) — \
+vendored-skills file check falls back to SKILL.md-only defaults"
+    lock_out=""
+  fi
+
+  if ! names="$(_dv_link_names "$repo/link.sh")" || [ -z "$names" ]; then
+    warn "link.sh EXTERNAL_SKILLS array unreadable — vendored-skills \
+check skipped"
+    return 0
+  fi
+
+  while IFS= read -r name; do
+    [ -n "$name" ] || continue
+    if ! _dv_valid_item_name "$name"; then
+      warn "link.sh EXTERNAL_SKILLS entry \"$name\" rejected by the \
+item-name allowlist — skipped"
+      continue
+    fi
+    _dv_check_files "$repo" "$name" "$lock_out" \
+      && _dv_check_link "$claude_home" "$repo" "$name" "$profile_file"
+  done <<< "$names"
+}
diff --git a/lib/tests/doctor-vendored.test.sh b/lib/tests/doctor-vendored.test.sh
new file mode 100644
index 0000000..7ee2006
--- /dev/null
+++ b/lib/tests/doctor-vendored.test.sh
@@ -0,0 +1,216 @@
+#!/usr/bin/env bash
+# lib/tests/doctor-vendored.test.sh — lib/doctor-vendored.sh's
+# check_vendored_skills(): a fixture repo under mktemp with a fake
+# plugins.lock.json (single-path shape, list shape, dict shape with a
+# references/ file), a fake link.sh holding a multi-line
+# EXTERNAL_SKILLS=(...) array, a fake <claude_home>/skills dir and a fake
+# profile file. Cases: every file present + linked (ALL_PRESENT), a
+# list-shape skill missing its SKILL.md (FILE_MISSING), a dict-shape
+# skill missing one of two files — only that file is named
+# (DICT_FILES_COMPLETE), a profile-listed name with no symlink
+# (SYMLINK_MISSING_ACTIVE) or a symlink to the wrong target
+# (SYMLINK_WRONG_TARGET), a name absent from the profile reported parked
+# rather than failed (SYMLINK_PARKED), the same name treated as
+# expected-linked (fail, not parked) when no profile file is passed at
+# all (NO_PROFILE_EXPECTS_LINK), an unreadable lock file degrading to a
+# warn instead of a fail (LOCK_UNREADABLE, rc 0), a lock entry whose
+# "skills" is neither null/list/dict degrading the same way with no
+# Python traceback leaking (LOCK_MALFORMED_ENTRY, rc 0), the
+# profile-name allowlist rejecting a path-traversal value
+# (REJECTS_BAD_PROFILE_NAME), and the item-name allowlist rejecting a
+# link.sh entry with a ".." segment — warned and skipped, not failed
+# (REJECTS_BAD_NAME).
+set -u
+ROOT="$(cd "$(dirname "$0")/../.." && pwd)"
+LIB="$ROOT/lib/doctor-vendored.sh"
+pass=0; fail=0
+
+check_bool() {
+  local name="$1" ok="$2"
+  if [ "$ok" = 1 ]; then pass=$((pass+1)); echo "PASS $name"
+  else fail=$((fail+1)); echo "FAIL $name"; fi
+}
+
+WORK="$(mktemp -d)"; trap 'rm -rf "$WORK"' EXIT
+REPO="$WORK/repo"
+CLAUDE_HOME="$WORK/claude_home"
+mkdir -p "$REPO/skills-external" "$CLAUDE_HOME/skills"
+
+# ── Lock: "ok-skill" mirrors the emil-design-eng single-file "path"
+# shape (the key IS the name); "list-entry" mirrors the agent-skills
+# bare-list shape (5 names, each defaults to SKILL.md); "dict-entry"
+# mirrors the mengto-skills explicit shape (dict-skill needs SKILL.md +
+# references/notes.md, and only the latter is ever missing below).
+cat > "$REPO/plugins.lock.json" <<'JSON'
+{
+  "ok-skill": {
+    "path": "skills/ok-skill/SKILL.md",
+    "managed_by": "curl"
+  },
+  "list-entry": {
+    "managed_by": "curl",
+    "skills": [
+      "missing-skill", "active-nolink-skill", "active-wronglink-skill",
+      "parked-skill", "noprofile-skill"
+    ]
+  },
+  "dict-entry": {
+    "managed_by": "curl",
+    "skills": {"dict-skill": ["SKILL.md", "references/notes.md"]}
+  }
+}
+JSON
+
+# ── link.sh: a multi-line EXTERNAL_SKILLS array, tolerance-tested.
+cat > "$REPO/link.sh" <<'SH'
+#!/usr/bin/env bash
+EXTERNAL_SKILLS=(ok-skill missing-skill dict-skill
+  active-nolink-skill active-wronglink-skill
+  parked-skill noprofile-skill)
+SH
+
+# ── skills-external/ tree: every name's SKILL.md present, except
+# missing-skill (nothing at all) and dict-skill's references/notes.md.
+for n in ok-skill dict-skill active-nolink-skill active-wronglink-skill \
+         parked-skill noprofile-skill; do
+  mkdir -p "$REPO/skills-external/$n"
+  echo "v1" > "$REPO/skills-external/$n/SKILL.md"
+done
+
+# ── claude_home symlinks: ok-skill correct, active-wronglink-skill
+# points elsewhere, active-nolink-skill and noprofile-skill have none.
+ln -sf "$REPO/skills-external/ok-skill" "$CLAUDE_HOME/skills/ok-skill"
+mkdir -p "$WORK/elsewhere"
+ln -sf "$WORK/elsewhere" "$CLAUDE_HOME/skills/active-wronglink-skill"
+
+# ── active.profile: lists everything EXCEPT parked-skill and
+# noprofile-skill (both proven absent from it).
+cat > "$REPO/active.profile" <<'PROF'
+# DESC: fixture profile
+ok-skill                external
+missing-skill            external
+dict-skill               external
+active-nolink-skill      external
+active-wronglink-skill   external
+PROF
+
+# shellcheck source=../doctor-vendored.sh disable=SC1091
+source "$LIB"
+
+# ── With the active profile passed ──────────────────────────────────
+out1="$(check_vendored_skills "$REPO" "$CLAUDE_HOME" \
+  "$REPO/active.profile" 2>&1)"
+
+check_bool ALL_PRESENT \
+  "$(printf '%s' "$out1" | grep -qF 'ok-skill: vendored + linked' \
+    && echo 1 || echo 0)"
+
+check_bool FILE_MISSING \
+  "$(printf '%s' "$out1" | \
+    grep -qF 'missing-skill: skills-external/missing-skill/SKILL.md missing' \
+    && echo 1 || echo 0)"
+
+check_bool DICT_FILES_COMPLETE \
+  "$(printf '%s' "$out1" | grep -qF \
+      'dict-skill: skills-external/dict-skill/references/notes.md missing' \
+    && ! printf '%s' "$out1" | grep -qF \
+      'dict-skill: skills-external/dict-skill/SKILL.md missing' \
+    && echo 1 || echo 0)"
+
+check_bool SYMLINK_MISSING_ACTIVE \
+  "$(printf '%s' "$out1" | \
+    grep -qF 'active-nolink-skill: symlink missing/wrong' && echo 1 || echo 0)"
+
+check_bool SYMLINK_WRONG_TARGET \
+  "$(printf '%s' "$out1" | \
+    grep -qF 'active-wronglink-skill: symlink missing/wrong' \
+    && echo 1 || echo 0)"
+
+check_bool SYMLINK_PARKED \
+  "$(printf '%s' "$out1" | grep -qF 'parked-skill: parked by profile active' \
+    && ! printf '%s' "$out1" | \
+      grep -qF 'parked-skill: symlink missing/wrong' \
+    && echo 1 || echo 0)"
+
+# ── No profile file passed at all: noprofile-skill (absent from
+# active.profile, parked above) must now be treated as expected-linked.
+out2="$(check_vendored_skills "$REPO" "$CLAUDE_HOME" 2>&1)"
+check_bool NO_PROFILE_EXPECTS_LINK \
+  "$(printf '%s' "$out2" | \
+    grep -qF 'noprofile-skill: symlink missing/wrong' && echo 1 || echo 0)"
+
+# ── LOCK_UNREADABLE — a second, minimal fixture with an invalid
+# plugins.lock.json: check_vendored_skills degrades to a warn (not a
+# fail) and still returns 0.
+BROKEN="$WORK/broken"
+mkdir -p "$BROKEN/skills-external/solo-skill"
+echo "v1" > "$BROKEN/skills-external/solo-skill/SKILL.md"
+echo "not valid json" > "$BROKEN/plugins.lock.json"
+cat > "$BROKEN/link.sh" <<'SH'
+#!/usr/bin/env bash
+EXTERNAL_SKILLS=(solo-skill)
+SH
+out3="$(check_vendored_skills "$BROKEN" "$CLAUDE_HOME" 2>&1)"
+rc3=$?
+check_bool LOCK_UNREADABLE \
+  "$([ "$rc3" -eq 0 ] && printf '%s' "$out3" | \
+    grep -qF 'plugins.lock.json unreadable' && echo 1 || echo 0)"
+
+# ── LOCK_MALFORMED_ENTRY — a valid-JSON lock whose "skills" is a bare
+# number (neither null, list nor dict): degrades to the same warn as an
+# unreadable lock, rc 0, and no Python traceback text anywhere in the
+# captured output.
+MALFORMED="$WORK/malformed"
+mkdir -p "$MALFORMED/skills-external/bad-entry"
+echo "v1" > "$MALFORMED/skills-external/bad-entry/SKILL.md"
+cat > "$MALFORMED/plugins.lock.json" <<'JSON'
+{
+  "bad-entry": {
+    "managed_by": "curl",
+    "skills": 42
+  }
+}
+JSON
+cat > "$MALFORMED/link.sh" <<'SH'
+#!/usr/bin/env bash
+EXTERNAL_SKILLS=(bad-entry)
+SH
+out4="$(check_vendored_skills "$MALFORMED" "$CLAUDE_HOME" 2>&1)"
+rc4=$?
+check_bool LOCK_MALFORMED_ENTRY \
+  "$([ "$rc4" -eq 0 ] \
+    && printf '%s' "$out4" | grep -qF 'plugins.lock.json unreadable' \
+    && ! printf '%s' "$out4" | grep -qi 'traceback' \
+    && ! printf '%s' "$out4" | grep -q 'Error:' \
+    && echo 1 || echo 0)"
+
+# ── REJECTS_BAD_PROFILE_NAME — the profile-name allowlist helper
+# rejects a path-traversal value and accepts a plain one.
+check_bool REJECTS_BAD_PROFILE_NAME \
+  "$( { _dv_valid_profile_name "full" \
+      && ! _dv_valid_profile_name "../x" \
+      && ! _dv_valid_profile_name "a/b" \
+      && ! _dv_valid_profile_name "a.b"; } && echo 1 || echo 0)"
+
+# ── REJECTS_BAD_NAME — a link.sh EXTERNAL_SKILLS entry with a ".."
+# segment: warned and skipped, never reaches _dv_check_files/
+# _dv_check_link (no fail line names it), rc 0.
+BADNAME="$WORK/badname"
+mkdir -p "$BADNAME/skills-external"
+echo '{}' > "$BADNAME/plugins.lock.json"
+cat > "$BADNAME/link.sh" <<'SH'
+#!/usr/bin/env bash
+EXTERNAL_SKILLS=(../evil)
+SH
+out5="$(check_vendored_skills "$BADNAME" "$CLAUDE_HOME" 2>&1)"
+rc5=$?
+check_bool REJECTS_BAD_NAME \
+  "$([ "$rc5" -eq 0 ] \
+    && printf '%s' "$out5" | \
+      grep -qF '"../evil" rejected by the item-name allowlist' \
+    && ! printf '%s' "$out5" | grep -qF 'skills-external/../evil' \
+    && ! printf '%s' "$out5" | grep -qF '../evil: symlink' \
+    && echo 1 || echo 0)"
+
+echo "PASS=$pass FAIL=$fail"
+[ "$fail" -eq 0 ]