Move plugins to manifest, pin Docker version, add Makefile

- Add plugins.txt listing all plugins for reproducible installs
- Add Makefile with setup/start/stop/install-plugins targets
- Remove user/plugins/ from git tracking
- Pin Docker image to 1.7.49.5-ls244

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

plugins/admin/themes/grav/scss/nucleus/particles/_align-text.scss

@@ -1,46 +0,0 @@
-// Alignment Classes
-$align-class-names:
-	large-desktop,
-	desktop,
-	tablet,
-	large-mobile,
-	small-mobile,
-	no-mobile,
-	mobile-only;
-
-// Breakpoints
-$align-class-breakpoints:
-	$large-desktop-range,
-	$desktop-range,
-	$tablet-range,
-	$large-mobile-range,
-	$small-mobile-range,
-	$no-mobile,
-	$mobile-only;
-
-// Create Responsive Alignment Classes
-@mixin align-classes{
-	.text-left {
-		text-align: left !important;
-	}
-	.text-right {
-		text-align: right !important;
-	}
-	.text-center {
-		text-align: center !important;
-	}
-	.text-justify {
-		text-align: justify !important;
-	}
-
-	@for $i from 1 through length($align-class-names) {
-		@media #{(nth($align-class-breakpoints, $i))} {
-			.#{(nth($align-class-names, $i))}-text-left { text-align: left !important; }
-			.#{(nth($align-class-names, $i))}-text-right   { text-align: right !important; }
-			.#{(nth($align-class-names, $i))}-text-center  { text-align: center !important; }
-			.#{(nth($align-class-names, $i))}-text-justify { text-align: justify !important; }
-		}
-	}
-}
-
-@include align-classes;