chore(zsh): apply standard modelines and editorconfig

* chore(zsh): apply standard modelines across plugins and libraries

* chore(config): add editorconfig formatting baseline

* ci(workflows): enforce top-level concurrency

---------

Co-authored-by: Salvydas Lukosius <ss-o@users.noreply.github.com>

Author: ss-o

.editorconfig

@@ -0,0 +1,23 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+indent_style = space
+indent_size = 2
+
+[*.{md,mdx,rst}]
+trim_trailing_whitespace = false
+
+[Makefile*]
+indent_style = tab
+indent_size = 4
+
+[*.{py,rb}]
+indent_size = 4
+
+[*.{go,java}]
+indent_style = tab
+indent_size = 4

.github/workflows/deploy-gh-pages.yml

@@ -13,15 +13,17 @@ on:
 permissions:
   contents: write
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: false
+
 jobs:
   deploy:
     if: github.repository == 'z-shell/src'
     environment:
       name: github-pages
     runs-on: ubuntu-latest
     timeout-minutes: 15
-    concurrency:
-      group: ${{ github.workflow }}-${{ github.ref }}
     steps:
       - name: ⤵️ Check out code from GitHub
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2

.github/workflows/win-install.yml

@@ -19,6 +19,10 @@ on:
 permissions:
   contents: read
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   shellcheck:
     runs-on: ubuntu-latest
@@ -33,9 +37,6 @@ jobs:
     runs-on: windows-latest
     timeout-minutes: 30
     needs: [shellcheck]
-    concurrency:
-      group: ci-${{ github.workflow }}-${{ github.ref }}
-      cancel-in-progress: false
     steps:
       - name: 🪟 Set CRLF (Windows)
         run: |

public/zsh/snippets/color.zsh

@@ -1,3 +1,5 @@
+# -*- mode: zsh; sh-indentation: 2; indent-tabs-mode: nil; sh-basic-offset: 2; -*-
+# vim: ft=zsh sw=2 ts=2 et
 # Source: https://github.com/molovo/color
 # License: MIT — Copyright (c) 2015 Joe Letchford
 # Maintained by z-shell/src — https://github.com/z-shell/src

public/zsh/snippets/welcome.zsh

@@ -1,3 +1,5 @@
+# -*- mode: zsh; sh-indentation: 2; indent-tabs-mode: nil; sh-basic-offset: 2; -*-
+# vim: ft=zsh sw=2 ts=2 et
 +zi-message "{auto}\`Welcome to Zi :)\`"
 sleep 1
 +zi-message "{hi}I am the snippet\!"