chore: remove stale check-manifests references left by e647f14

e647f14 deleted scripts/check-manifests.sh but missed three live files
that still named it: the apm-marketplace-check hook description in
.pre-commit-config.yaml, and comments in sync-plugin-content.sh and
lib/marketplace-plugins.sh explaining design decisions by pointing at
a script that no longer exists.

Also deletes list_marketplace_remote_plugin_names from
marketplace-plugins.sh — its only caller was check-manifests.sh, so
it's been dead code since that commit.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YR2CjVumUbEGWcMikcoXBD

.pre-commit-config.yaml

@@ -104,7 +104,7 @@ repos:
 
       - id: apm-marketplace-check
         name: apm marketplace check
-        description: Validate every marketplace.packages[] entry resolves, including network reachability of remote refs -- catches stale/unreachable remote package references that check-manifests.sh deliberately skips (local-source checks only)
+        description: Validate every marketplace.packages[] entry resolves, including network reachability of remote refs -- the only hook that checks remote package references rather than local-source paths
         entry: apm marketplace check
         language: system
         stages: [pre-push]

scripts/lib/marketplace-plugins.sh

@@ -1,21 +1,21 @@
 #!/usr/bin/env bash
 # Shared helper: enumerates the local (string-source) plugin entries declared in
 # .claude-plugin/marketplace.json. Sourced by scripts/sync-plugin-content.sh
-# (--all) and scripts/check-manifests.sh so a future marketplace.json schema
-# change (e.g. a new source type) only has to be handled in one place instead
-# of drifting between two hand-maintained copies of the same walk.
+# (--all), kept as its own file so a future marketplace.json schema change (e.g.
+# a new source type) has one place to land if a second caller needs the walk.
 #
 # Requires jq. Not meant to be executed directly -- source it.
 
 # assert_marketplace_manifest_usable <marketplace_json_path>
 #
 # Checks the preconditions list_marketplace_local_plugins depends on but cannot
-# report on. Both callers run the walk inside a process substitution
+# report on. The caller runs the walk inside a process substitution
 # (`done < <(list_marketplace_local_plugins ...)`), which is its own subshell: a
 # jq abort in there kills only that subshell, so an unparseable manifest yields
 # zero lines and reads exactly like "this marketplace declares no local plugins".
-# The caller then blames whatever its empty-set branch blames -- for
-# check-manifests.sh, every plugin directory on disk being unlisted.
+# sync-plugin-content.sh --all's own empty-set check (see there) is what catches
+# that reading; it cannot tell an empty manifest from an unparseable one on its
+# own, which is why this assert has to run first, in the caller's own shell.
 #
 # It also rejects an entry whose `source` is neither a local path string nor a
 # remote source object. Only those two shapes are classifiable: the walk below
@@ -26,10 +26,9 @@
 #
 # The check is deliberately typed as "not string AND not object" rather than
 # enumerating `.source == null`. Rejecting null specifically left every other
-# malformed value (`"source": 42`, `"source": []`) passing the assert, skipped by
-# the walk below, AND rescued by check-manifests.sh's disk -> marketplace name
-# axis -- i.e. exactly the defect the null case was fixed for, reached with a
-# different value.
+# malformed value (`"source": 42`, `"source": []`) passing the assert while
+# silently dropping out of the walk below -- i.e. exactly the defect the null
+# case was fixed for, reached with a different value.
 #
 # Exits 1 with a specific message on any violation, so call it from the caller's
 # own shell -- never inside `< <(...)`, which is the exact swallowing this guards.
@@ -70,7 +69,7 @@ assert_marketplace_manifest_usable() {
 #
 # Prints one "<name>\t<absolute_plugin_dir>" line per local (string `source:`)
 # marketplace entry. Remote sources (github/git/npm objects) have no local
-# directory to walk and are skipped, matching both callers' prior behavior.
+# directory to walk and are skipped.
 list_marketplace_local_plugins() {
   local repo_root="$1" marketplace="$2"
   local plugin_count i name source_type source
@@ -85,26 +84,3 @@ list_marketplace_local_plugins() {
     printf '%s\t%s\n' "$name" "$repo_root/$source"
   done
 }
-
-# list_marketplace_remote_plugin_names <marketplace_json_path>
-#
-# Prints the `name` of every REMOTE (object `source:`) marketplace entry, one per
-# line -- the exact complement of list_marketplace_local_plugins.
-#
-# check-manifests.sh's disk -> marketplace pass uses it as its name axis: a plugin
-# vendored on disk but declared with the remote-object shape has no local entry to
-# path-match against, so without a name match it would be reported as unlisted when
-# its entry is in fact right there.
-#
-# The select is `(.source | type) == "object"`, an allowlist of the one shape that
-# axis is actually for -- NOT the denylist `(.source | type) != "string"` it used to
-# be. That denylist was true for `null` (and for numbers, arrays, booleans), so a
-# malformed entry marked its same-named directory "listed" while the local walk above
-# skipped it for lacking a string source: one bad entry disabled BOTH directions of
-# the check at once. assert_marketplace_manifest_usable rejects those shapes too, but
-# this function must be correct on its own -- it is called from a different script,
-# and a precondition that stops running is not a property of this select.
-list_marketplace_remote_plugin_names() {
-  local marketplace="$1"
-  jq -r '.plugins[]? | select((.source | type) == "object") | .name // empty' "$marketplace"
-}

scripts/sync-plugin-content.sh

@@ -192,8 +192,8 @@ fi
 if [[ "$ALL" -eq 1 ]]; then
   # Derives the plugin list from marketplace.json via the shared
   # list_marketplace_local_plugins helper (scripts/lib/marketplace-plugins.sh),
-  # the same one scripts/check-manifests.sh uses, instead of hand-maintaining a
-  # duplicate walk at every call site (see .pre-commit-config.yaml's
+  # a single implementation of the walk instead of hand-maintaining a
+  # duplicate at every call site (see .pre-commit-config.yaml's
   # check-plugin-content-sync).
   #
   # Hard error rather than a `|| pwd` fallback, on scripts/sync-marketplace-mirror.sh's