Reduce unnecessary CI build

Co-authored-by: Mikachu2333 <[email protected]>

Author: ccmywish

.github/workflows/build-on-Linux-AArch64.yml

@@ -4,7 +4,7 @@
 # Contributors  :   Nul None  <[email protected]>
 #               |
 # Created On    : <2023-09-14>
-# Last Modified : <2025-03-06>
+# Last Modified : <2025-06-19>
 #
 # Build chsrc on Linux (AArch64) and upload it to GitHub: the 'pre' release
 # ---------------------------------------------------------------
@@ -13,8 +13,6 @@ name: 构建于 Linux AArch64
 on:
   push:
     branches: [ "gh-build" ]
-  pull_request:
-    branches: [ "gh-build" ]
 
 jobs:
   build-and-upload:

.github/workflows/build-on-Linux-ARMv7.yml

@@ -4,7 +4,7 @@
 # Contributors  :   Nul None  <[email protected]>
 #               |
 # Created On    : <2023-09-14>
-# Last Modified : <2025-03-06>
+# Last Modified : <2025-06-19>
 #
 # Build chsrc on Linux (ARMv7) and upload it to GitHub: the 'pre' release
 # ---------------------------------------------------------------
@@ -13,8 +13,6 @@ name: 构建于 Linux ARMv7
 on:
   push:
     branches: [ "gh-build" ]
-  pull_request:
-    branches: [ "gh-build" ]
 
 jobs:
   build-and-upload:

.github/workflows/build-on-Linux-riscv64.yml

@@ -4,7 +4,7 @@
 # Contributors  :   Nul None  <[email protected]>
 #               |
 # Created On    : <2023-09-14>
-# Last Modified : <2025-03-06>
+# Last Modified : <2025-06-19>
 #
 # Build chsrc on Linux (riscv64) and upload it to GitHub: the 'pre' release
 # ---------------------------------------------------------------
@@ -13,8 +13,6 @@ name: 构建于 Linux riscv64
 on:
   push:
     branches: [ "gh-build" ]
-  pull_request:
-    branches: [ "gh-build" ]
 
 jobs:
   build-and-upload:

.github/workflows/build-on-Linux-x64.yml

@@ -4,7 +4,7 @@
 # Contributors  :   Nul None  <[email protected]>
 #               |
 # Created On    : <2023-09-14>
-# Last Modified : <2025-06-16>
+# Last Modified : <2025-06-19>
 #
 # Build chsrc on Linux (x64) and upload it to GitHub: the 'pre' release
 # ---------------------------------------------------------------
@@ -13,8 +13,6 @@ name: 构建于 Linux x64
 on:
   push:
     branches: [ "gh-build" ]
-  pull_request:
-    branches: [ "gh-build" ]
 
 jobs:
   build-and-upload:

.github/workflows/build-on-Windows.yml

@@ -4,7 +4,7 @@
 # Contributors  :   Nul None  <[email protected]>
 #               |
 # Created On    : <2023-09-14>
-# Last Modified : <2025-06-16>
+# Last Modified : <2025-06-19>
 #
 # Build chsrc on Windows and upload it to GitHub: the 'pre' release
 # ---------------------------------------------------------------
@@ -13,8 +13,6 @@ name: 构建于 Windows
 on:
   push:
     branches: [ "gh-build" ]
-  pull_request:
-    branches: [ "gh-build" ]
 
 jobs:
   build-and-upload:

.github/workflows/build-on-macOS.yml

@@ -4,7 +4,7 @@
 # Contributors  :   Nul None  <[email protected]>
 #               |
 # Created On    : <2023-09-15>
-# Last Modified : <2025-06-16>
+# Last Modified : <2025-06-19>
 #
 # Build chsrc on macOS and upload it to GitHub: the 'pre' release
 # ---------------------------------------------------------------
@@ -13,8 +13,6 @@ name: 构建于 macOS
 on:
   push:
     branches: [ "gh-build" ]
-  pull_request:
-    branches: [ "gh-build" ]
 
 jobs:
   build-and-upload-on-M1:

.github/workflows/pub-AUR-chsrc-git.yml

@@ -4,7 +4,7 @@
 # Contributors  : Nul None <[email protected]>
 #               |
 # Created On    : <2024-08-29>
-# Last Modified : <2025-03-18>
+# Last Modified : <2025-06-19>
 #
 # Publish package 'chsrc-git' to AUR when branch 'main' is updated.
 # ---------------------------------------------------------------
@@ -14,6 +14,9 @@ on:
   workflow_dispatch:
   push:
     branches: [ "main" ] # chsrc-git syncs with main
+    paths:
+      - "src/**"
+      - "lib/**"
 
 jobs:
   publish: