fix: card/link colors, title clamp, header icon color; clean distributable zips

- links inherit design colour (Astra was recolouring card titles, destination
  names, header search icon → dark/invisible); buttons keep their colour
- clamp long tour titles + titem descriptions to 2 lines; meta values no-wrap
- theme: reset icon-btn background/colour so header icons show (white)
- add build-zip.php; zips now exclude docs/, build/, *.md, .claude (no
  doc/guidance/AI-revealing files shipped)
- bump plugin 1.8.3, theme 1.0.2

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01J4hNL1PSHxXbu94SCenpKj

build-zip.php

@@ -0,0 +1,70 @@
+<?php
+/**
+ * Distribution zipper for the plugin / theme.
+ *
+ *   php build-zip.php <source-dir> <output.zip>
+ *
+ * Produces a clean, distributable archive: excludes docs, build tooling,
+ * markdown, VCS and editor/AI metadata — nothing that documents how the code
+ * was produced ships to the client.
+ *
+ * Exclusion rule (keep in sync with the "no docs/AI files in zips" preference):
+ *   - any path segment: .git, .claude, .github, docs, build, node_modules
+ *   - any *.md file
+ *   - dotfiles at any level except .htaccess
+ */
+
+$src = isset( $argv[1] ) ? rtrim( str_replace( '\\', '/', $argv[1] ), '/' ) : '';
+$out = isset( $argv[2] ) ? $argv[2] : '';
+
+if ( '' === $src || '' === $out || ! is_dir( $src ) ) {
+	fwrite( STDERR, "Usage: php build-zip.php <source-dir> <output.zip>\n" );
+	exit( 1 );
+}
+
+$excluded_dirs = array( '.git', '.claude', '.github', 'docs', 'build', 'node_modules' );
+
+function is_excluded( $rel, array $excluded_dirs ) {
+	$parts = explode( '/', $rel );
+	$base  = end( $parts );
+
+	foreach ( $parts as $seg ) {
+		if ( in_array( $seg, $excluded_dirs, true ) ) {
+			return true;
+		}
+	}
+	// Markdown / doc files.
+	if ( preg_match( '/\.md$/i', $base ) ) {
+		return true;
+	}
+	// Dotfiles (e.g. .gitignore, .DS_Store) except .htaccess.
+	if ( '' !== $base && '.' === $base[0] && '.htaccess' !== $base ) {
+		return true;
+	}
+	return false;
+}
+
+@unlink( $out );
+$zip = new ZipArchive();
+if ( true !== $zip->open( $out, ZipArchive::CREATE | ZipArchive::OVERWRITE ) ) {
+	fwrite( STDERR, "Cannot create $out\n" );
+	exit( 1 );
+}
+
+$root  = basename( $src );
+$it    = new RecursiveIteratorIterator( new RecursiveDirectoryIterator( $src, FilesystemIterator::SKIP_DOTS ) );
+$added = 0;
+$skip  = 0;
+foreach ( $it as $file ) {
+	$path = str_replace( '\\', '/', $file->getPathname() );
+	// Path relative to the source's parent, so the archive contains <root>/…
+	$rel_from_src = ltrim( substr( $path, strlen( $src ) ), '/' );
+	if ( is_excluded( $rel_from_src, $excluded_dirs ) ) {
+		$skip++;
+		continue;
+	}
+	$zip->addFile( $path, $root . '/' . $rel_from_src );
+	$added++;
+}
+$zip->close();
+fwrite( STDOUT, "Wrote $out — $added files (skipped $skip)\n" );