diff --git a/.github/pull_request_template.md b/.github/pull_request_template.md
index a7166ec2e..13441a81f 100644
--- a/.github/pull_request_template.md
+++ b/.github/pull_request_template.md
@@ -7,7 +7,11 @@
 > If your PR involves the changes mentioned below and completed the action, please tick the corresponding option.
 > If a modification is not involved, please skip it directly.
 
-- [ ] If you modified `*.php`, run `composer cs-fix` at local machine.
-- [ ] If it's an extension or dependency update, make sure adding related extensions in `src/global/test-extensions.php`.
-- [ ] If you changed the behavior of static-php-cli, update docs in `./docs/`.
-- [ ] If you updated `config/xxx.json` content, run `bin/spc dev:sort-config xxx`.
+- If you modified `*.php` or `*.json`, run them locally to ensure your changes are valid:
+  - [ ] `PHP_CS_FIXER_IGNORE_ENV=1 composer cs-fix`
+  - [ ] `composer analyse`
+  - [ ] `composer test`
+  - [ ] `bin/spc dev:sort-config`
+- If it's an extension or dependency update, please ensure the following:
+  - [ ] Add your test combination to `src/globals/test-extensions.php`.
+  - [ ] If adding new or fixing bugs, add commit message containing `extension test` or `test extensions` to trigger full test suite.
diff --git a/.github/workflows/ext-matrix-tests.yml b/.github/workflows/ext-matrix-tests.yml
index da30d0086..1c04f5c93 100644
--- a/.github/workflows/ext-matrix-tests.yml
+++ b/.github/workflows/ext-matrix-tests.yml
@@ -1,16 +1,14 @@
-name: "Extension matrix tests"
+name: "Extension Matrix Tests"
 
 on:
   workflow_dispatch:
-  pull_request:
-    branches: [ "main" ]
-    paths:
-      - '.github/workflows/ext-matrix-tests.yml'
+  push:
 
 jobs:
   test:
     name: "${{ matrix.extension }} (PHP ${{ matrix.php-version }} on ${{ matrix.operating-system }})"
     runs-on: ${{ matrix.operating-system }}
+    if: contains(github.event.head_commit.message, 'extension test') || contains(github.event.head_commit.message, 'test extensions')
     strategy:
       fail-fast: false
       matrix:
diff --git a/docs/deps-craft-yml.md b/docs/deps-craft-yml.md
index 9e660be88..0ee0e11d0 100644
--- a/docs/deps-craft-yml.md
+++ b/docs/deps-craft-yml.md
@@ -42,6 +42,9 @@ build-options:
   # Set micro SAPI as win32 mode, without this, micro SAPI will be compiled as a console application (only for Windows, default: false)
   enable-micro-win32: false
 
+# Build options for shared extensions (list or comma-separated are both accepted)
+shared-extensions: [ ]
+
 # Download options
 download-options:
   # Use custom url for specified sources, format: "{source-name}:{url}" (e.g. "php-src:https://example.com/php-8.4.0.tar.gz")
diff --git a/src/SPC/command/CraftCommand.php b/src/SPC/command/CraftCommand.php
index 8d3cc2bee..9a2ac4419 100644
--- a/src/SPC/command/CraftCommand.php
+++ b/src/SPC/command/CraftCommand.php
@@ -49,7 +49,7 @@ public function handle(): int
         }
 
         $static_extensions = implode(',', $craft['extensions']);
-        $shared_extensions = implode(',', $craft['shared-extensions']);
+        $shared_extensions = implode(',', $craft['shared-extensions'] ?? []);
         $libs = implode(',', $craft['libs']);
 
         // init log
diff --git a/src/SPC/util/ConfigValidator.php b/src/SPC/util/ConfigValidator.php
index eae2ef2bd..dbc8ce236 100644
--- a/src/SPC/util/ConfigValidator.php
+++ b/src/SPC/util/ConfigValidator.php
@@ -164,6 +164,12 @@ public static function validateAndParseCraftFile(mixed $craft_file, Command $com
         if (is_string($craft['extensions'])) {
             $craft['extensions'] = array_filter(array_map(fn ($x) => trim($x), explode(',', $craft['extensions'])));
         }
+        if (!isset($craft['shared-extensions'])) {
+            $craft['shared-extensions'] = [];
+        }
+        if (is_string($craft['shared-extensions'] ?? [])) {
+            $craft['shared-extensions'] = array_filter(array_map(fn ($x) => trim($x), explode(',', $craft['shared-extensions'])));
+        }
         // check libs
         if (isset($craft['libs']) && is_string($craft['libs'])) {
             $craft['libs'] = array_filter(array_map(fn ($x) => trim($x), explode(',', $craft['libs'])));