diff --git a/CHANGELOG.md b/CHANGELOG.md
index e7df353..bfe9920 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,8 @@ version tags such as `v0.3.0`.
 ## Unreleased
 
 - Add collection-level Import Review selection that selects or clears every eligible child in one collection without changing blocked, imported, system, conflicted, or unresolved-type children.
+- Recognize copied installer skills as one Installed Source Collection when their
+  valid v3 GitHub provenance uses a shared package-level `pluginName`.
 
 ## 0.9.0
 
diff --git a/crates/skillbox-core/src/installed_sources.rs b/crates/skillbox-core/src/installed_sources.rs
index a540e70..4c42bbb 100644
--- a/crates/skillbox-core/src/installed_sources.rs
+++ b/crates/skillbox-core/src/installed_sources.rs
@@ -252,18 +252,12 @@ fn parse_lockfile_entry(name: &str, value: &Value, root: &Path) -> Option<Lockfi
     let source_url = skillbox_github::normalize_github_repo_url(&source_url).ok()?;
     let skill_path = bounded_string(object.get("skillPath")?)?;
     validate_lockfile_skill_path(&skill_path, name)?;
-    let plugin_name = object
-        .get("pluginName")
-        .and_then(|value| value.as_str())
-        .unwrap_or("");
-    if plugin_name.len() > MAX_LOCKFILE_STRING_BYTES {
-        return None;
-    }
-    if !plugin_name.is_empty()
-        && !plugin_name.eq_ignore_ascii_case(name)
-        && !plugin_name.eq_ignore_ascii_case(lockfile_skill_name(&skill_path)?)
-    {
-        return None;
+    if let Some(plugin_name) = object.get("pluginName") {
+        // The installer may use this optional field for a package or collection
+        // identifier (for example, several skills can belong to one plugin).
+        // It is bounded metadata only: the lock entry key and safe skillPath
+        // remain the authority for matching one scanned child skill.
+        bounded_string(plugin_name)?;
     }
     Some(LockfileEntry {
         root: root.to_path_buf(),
diff --git a/crates/skillbox-core/src/tests.rs b/crates/skillbox-core/src/tests.rs
index cf9299a..f056282 100644
--- a/crates/skillbox-core/src/tests.rs
+++ b/crates/skillbox-core/src/tests.rs
@@ -11010,6 +11010,92 @@ fn scan_import_candidates_groups_validated_installed_source_lockfile_entries() {
         .all(|child| child.locations.len() == 2));
 }
 
+#[test]
+fn scan_import_candidates_groups_installer_plugin_children_without_using_plugin_name_as_identity() {
+    let root = temp_dir("candidate-installed-source-hyperframes-plugin");
+    let agents_root = root.join(".agents/skills");
+    let claude_root = root.join(".claude/skills");
+    let codex_root = root.join(".codex/skills");
+    let cursor_root = root.join(".cursor/skills");
+    let managed_root = root.join("SkillBox");
+    let source_url = "https://github.com/heygen-com/hyperframes.git";
+    let names = [
+        "hyperframes",
+        "hyperframes-animation",
+        "hyperframes-cli",
+        "hyperframes-core",
+    ];
+
+    for name in names {
+        make_skill(
+            &agents_root.join(name),
+            name,
+            "HyperFrames installer-provenance skill",
+        );
+        for runtime_root in [&claude_root, &codex_root, &cursor_root] {
+            fs::create_dir_all(runtime_root).unwrap();
+            symlink_dir(&agents_root.join(name), &runtime_root.join(name)).unwrap();
+        }
+    }
+    let skills = names
+        .iter()
+        .map(|name| {
+            (
+                (*name).to_string(),
+                serde_json::json!({
+                    "sourceType": "github",
+                    "sourceUrl": source_url,
+                    "skillPath": format!("skills/{name}/SKILL.md"),
+                    "pluginName": "core-skills",
+                    "skillFolderHash": "stale-lock-hash"
+                }),
+            )
+        })
+        .collect::<serde_json::Map<_, _>>();
+    fs::create_dir_all(root.join(".agents")).unwrap();
+    fs::write(
+        root.join(".agents/.skill-lock.json"),
+        serde_json::to_vec(&serde_json::json!({ "version": 3, "skills": skills })).unwrap(),
+    )
+    .unwrap();
+
+    let scan = scan_import_candidates(
+        &[agents_root, claude_root, codex_root, cursor_root],
+        &managed_root,
+    )
+    .unwrap();
+
+    let collections = scan
+        .collections
+        .iter()
+        .filter(|collection| {
+            collection.source_kind == ImportCandidateCollectionSourceKind::InstalledSource
+                && collection.origin_url.as_deref()
+                    == Some("https://github.com/heygen-com/hyperframes")
+        })
+        .collect::<Vec<_>>();
+    assert_eq!(collections.len(), 1);
+    let collection = collections[0];
+    assert_eq!(collection.children.len(), names.len());
+    assert!(collection
+        .children
+        .iter()
+        .all(|child| { names.contains(&child.name.as_str()) && child.locations.len() == 4 }));
+    assert!(scan
+        .standalone_groups
+        .iter()
+        .all(|group| !names.contains(&group.name.as_str())));
+    assert_eq!(
+        scan.diagnostics.installed_source_lockfile_entries,
+        names.len()
+    );
+    assert_eq!(
+        scan.diagnostics.installed_source_lockfile_matches,
+        names.len()
+    );
+    assert_eq!(scan.diagnostics.installed_source_collections, 1);
+}
+
 #[test]
 fn scan_import_candidates_keeps_single_installed_source_match_standalone() {
     let root = temp_dir("candidate-installed-source-lockfile-singleton");
diff --git a/docs/architecture.md b/docs/architecture.md
index 90484d8..bd41d5b 100644
--- a/docs/architecture.md
+++ b/docs/architecture.md
@@ -229,6 +229,9 @@ repository URL、safe `skillPath` 和已扫描 candidate name，再把相同 sou
 路径，不执行网络，不伪造 branch/HEAD，也不允许 `apply_import_collection`；
 选中的 child 仍走普通 per-skill import。live Git worktree identity 优先，
 lockfile hash 不会跳过完整目录 snapshot 校验。
+`pluginName` 仅作为有界 installer package metadata：它可以被多个 child 共享，不能作为
+child identity 或 source grouping authority；entry key、safe `skillPath`、扫描到的
+candidate 和 normalized source URL 才是匹配边界。
 因此 nested repositories 是独立 collection，worktree/runtime symlink 解析到同一
 child 时只保留一个 child identity，而 Git metadata 外的相似 copy 不会因为内容相似
 被声明为成员，只会作为 unlinked location 展示。
diff --git a/docs/workflows.md b/docs/workflows.md
index 3ce73ea..e6a2eea 100644
--- a/docs/workflows.md
+++ b/docs/workflows.md
@@ -143,6 +143,9 @@ Review/apply：
   与 safe `skillPath`/name 匹配，并且 `sourceType=github`、source URL 可被
   canonicalize 为无凭据 GitHub repository identity 时，才会显示为
   `Installed source collection`。
+- `pluginName` 是 installer 的 optional、有界 package metadata，不参与 child identity：
+  多个 skill 可共享同一个 plugin name。每个 child 仍必须通过 lockfile entry key、safe
+  `skillPath`、candidate name/root/path 和 normalized GitHub source URL 的匹配。
 - 这类 collection 只用于展示来源和聚合 child，不提供 branch、HEAD、fetch、更新或
   `collection-apply`。它不使用 lockfile hash 替代完整 snapshot 校验；用户选中的
   child 仍逐项走现有 per-skill Import Review/apply，`.agents` 与 `.claude` 的等价