diff --git a/lib/services/install/npm-resolve.js b/lib/services/install/npm-resolve.js
index 72aa3ee..7abdb37 100644
--- a/lib/services/install/npm-resolve.js
+++ b/lib/services/install/npm-resolve.js
@@ -29,11 +29,16 @@ const SEARCH_RESULT_LIMIT = 250;
  * 保证「配置了镜像」时反查和安装走同一个源（镜像节点同步完整时结果一致）。
  * 慢网络下失败不阻塞安装。
  */
-export function resolveNpmPackage(repo, registry = '') {
+export async function resolveNpmPackage(repo, registry = '') {
     const key = repo.toLowerCase();
     if (cache.has(key))
         return Promise.resolve(cache.get(key) ?? null);
-    const name = searchRepo(repo, registry);
+    const name = searchRepo(repo, registry).then(async (found) => {
+        if (found !== null)
+            return found;
+        const canonical = await canonicalRepo(repo);
+        return canonical.toLowerCase() === key ? found : searchRepo(canonical, registry);
+    });
     void name.then((found) => {
         if (found !== undefined)
             cache.set(key, found);
@@ -65,7 +70,7 @@ export function isDshPackageMetadataForRepo(pkg, repo) {
     const manifestMarked = pkg.dsh !== null && typeof pkg.dsh === 'object';
     return keywordMarked || manifestMarked;
 }
-export function isDshNpmPackageForRepo(packageName, repo, registry = '') {
+export async function isDshNpmPackageForRepo(packageName, repo, registry = '') {
     if (packageName === '' || repo === '')
         return Promise.resolve(false);
     const base = registry === '' ? 'https://registry.npmjs.org' : registry.replace(/\/+$/, '');
@@ -79,9 +84,11 @@ export function isDshNpmPackageForRepo(packageName, repo, registry = '') {
             }
             let body = '';
             res.on('data', (chunk) => { body += chunk.toString(); });
-            res.on('end', () => {
+            res.on('end', async () => {
                 try {
-                    resolve(isDshPackageMetadataForRepo(JSON.parse(body), repo));
+                    const pkg = JSON.parse(body);
+                    resolve(isDshPackageMetadataForRepo(pkg, repo)
+                        || isDshPackageMetadataForRepo(pkg, await canonicalRepo(repo)));
                 }
                 catch {
                     resolve(false);
@@ -92,6 +99,20 @@ export function isDshNpmPackageForRepo(packageName, repo, registry = '') {
         req.on('error', () => resolve(false));
     });
 }
+async function canonicalRepo(repo) {
+    if (githubRepoOf(repo) === null)
+        return repo;
+    try {
+        const response = await fetch(`https://github.com/${repo}`, {
+            method: 'HEAD',
+            signal: AbortSignal.timeout(REQUEST_TIMEOUT_MS),
+        });
+        return response.ok ? githubRepoOf(response.url) ?? repo : repo;
+    }
+    catch {
+        return repo;
+    }
+}
 function matchingPackagesForRepo(objects, repo) {
     const matches = [];
     for (const obj of objects) {
diff --git a/lib/services/install/preflight.js b/lib/services/install/preflight.js
index d04dfdd..9389b30 100644
--- a/lib/services/install/preflight.js
+++ b/lib/services/install/preflight.js
@@ -51,7 +51,9 @@ export async function preflightTarget(target) {
             return { ok: true, missing: null, name: null };
         const entry = resolvePackageEntry(meta);
         const inTar = await hasTarEntry(tar, `${rootPrefix}${entry}`);
-        return { ok: inTar, missing: inTar ? null : entry, name: typeof meta.name === 'string' ? meta.name : null };
+        const prepare = meta.scripts?.prepare;
+        const ok = inTar || (typeof prepare === 'string' && prepare.trim() !== '');
+        return { ok, missing: ok ? null : entry, name: typeof meta.name === 'string' ? meta.name : null };
     }
     catch {
         return { ok: true, missing: null, name: null };
diff --git a/src/server/services/install/npm-resolve.ts b/src/server/services/install/npm-resolve.ts
index 8f79b79..25f612f 100644
--- a/src/server/services/install/npm-resolve.ts
+++ b/src/server/services/install/npm-resolve.ts
@@ -32,10 +32,14 @@ const SEARCH_RESULT_LIMIT = 250
  * 保证「配置了镜像」时反查和安装走同一个源（镜像节点同步完整时结果一致）。
  * 慢网络下失败不阻塞安装。
  */
-export function resolveNpmPackage(repo: string, registry = ''): Promise<string | null> {
+export async function resolveNpmPackage(repo: string, registry = ''): Promise<string | null> {
   const key = repo.toLowerCase()
   if (cache.has(key)) return Promise.resolve(cache.get(key) ?? null)
-  const name = searchRepo(repo, registry)
+  const name = searchRepo(repo, registry).then(async (found) => {
+    if (found !== null) return found
+    const canonical = await canonicalRepo(repo)
+    return canonical.toLowerCase() === key ? found : searchRepo(canonical, registry)
+  })
   void name.then((found) => {
     if (found !== undefined) cache.set(key, found)
   })
@@ -77,7 +81,7 @@ export function isDshPackageMetadataForRepo(pkg: NpmSearchPackage, repo: string)
   return keywordMarked || manifestMarked
 }
 
-export function isDshNpmPackageForRepo(packageName: string, repo: string, registry = ''): Promise<boolean> {
+export async function isDshNpmPackageForRepo(packageName: string, repo: string, registry = ''): Promise<boolean> {
   if (packageName === '' || repo === '') return Promise.resolve(false)
   const base = registry === '' ? 'https://registry.npmjs.org' : registry.replace(/\/+$/, '')
   const url = `${base}/${encodeURIComponent(packageName)}/latest`
@@ -90,9 +94,11 @@ export function isDshNpmPackageForRepo(packageName: string, repo: string, regist
       }
       let body = ''
       res.on('data', (chunk: Buffer) => { body += chunk.toString() })
-      res.on('end', () => {
+      res.on('end', async () => {
         try {
-          resolve(isDshPackageMetadataForRepo(JSON.parse(body) as NpmSearchPackage, repo))
+          const pkg = JSON.parse(body) as NpmSearchPackage
+          resolve(isDshPackageMetadataForRepo(pkg, repo)
+            || isDshPackageMetadataForRepo(pkg, await canonicalRepo(repo)))
         } catch {
           resolve(false)
         }
@@ -103,6 +109,19 @@ export function isDshNpmPackageForRepo(packageName: string, repo: string, regist
   })
 }
 
+async function canonicalRepo(repo: string): Promise<string> {
+  if (githubRepoOf(repo) === null) return repo
+  try {
+    const response = await fetch(`https://github.com/${repo}`, {
+      method: 'HEAD',
+      signal: AbortSignal.timeout(REQUEST_TIMEOUT_MS),
+    })
+    return response.ok ? githubRepoOf(response.url) ?? repo : repo
+  } catch {
+    return repo
+  }
+}
+
 function matchingPackagesForRepo(objects: NpmSearchObject[], repo: string): Array<{ name: string; isDshPlugin: boolean }> {
   const matches: Array<{ name: string; isDshPlugin: boolean }> = []
 
diff --git a/src/server/services/install/preflight.ts b/src/server/services/install/preflight.ts
index 5fa4ca3..c82f739 100644
--- a/src/server/services/install/preflight.ts
+++ b/src/server/services/install/preflight.ts
@@ -59,7 +59,9 @@ export async function preflightTarget(target: string): Promise<PreflightResult>
     if (meta === null) return { ok: true, missing: null, name: null }
     const entry = resolvePackageEntry(meta)
     const inTar = await hasTarEntry(tar, `${rootPrefix}${entry}`)
-    return { ok: inTar, missing: inTar ? null : entry, name: typeof meta.name === 'string' ? meta.name : null }
+    const prepare = (meta.scripts as { prepare?: unknown } | undefined)?.prepare
+    const ok = inTar || (typeof prepare === 'string' && prepare.trim() !== '')
+    return { ok, missing: ok ? null : entry, name: typeof meta.name === 'string' ? meta.name : null }
   } catch {
     return { ok: true, missing: null, name: null }
   } finally {