refactor: Decode multi-word cloud remarks like "SC TR"

Co-authored-by: aider (gemini/gemini-2.5-pro) <aider@aider.chat>

metar.html

@@ -234,13 +234,31 @@
             let decoded = ["RMK: Remarks"];
             const weatherRegex = /^([+-]|VC)?(MI|PR|BC|DR|BL|SH|TS|FZ|DZ|RA|SN|SG|IC|PL|GR|GS|UP|BR|FG|FU|VA|DU|SA|HZ|PY|PO|SQ|FC|SS|DS|TR)+$/;
             const obscurationRegex = /^(FG|BR|FU|HZ|DU|SA)\d$/;
-            parts.forEach(part => {
+            const cloudTypes = {
+                'CI': 'Cirrus',
+                'CC': 'Cirrocumulus',
+                'CS': 'Cirrostratus',
+                'AC': 'Altocumulus',
+                'AS': 'Altostratus',
+                'NS': 'Nimbostratus',
+                'SC': 'Stratocumulus',
+                'ST': 'Stratus',
+                'CU': 'Cumulus',
+                'CB': 'Cumulonimbus'
+            };
+
+            for (let i = 0; i < parts.length; i++) {
+                const part = parts[i];
                 if (part.startsWith('SLP')) {
                     decoded.push(`  - ${decodeSlp(part)}`);
                 } else if (obscurationRegex.test(part)) {
                     decoded.push(`  - ${decodeObscurationRemark(part)}`);
                 } else if (part.match(/^([A-Z]{2}\d)+$/)) {
                     decoded.push(`  - ${decodeCloudTypesRemark(part)}`);
+                } else if (cloudTypes[part] && i + 1 < parts.length && parts[i + 1] === 'TR') {
+                    const cloudName = cloudTypes[part];
+                    decoded.push(`  - ${part} ${parts[i+1]}: ${cloudName} clouds are translucent (thin)`);
+                    i++; // Consume 'TR' part
                 } else if (weatherRegex.test(part)) {
                     decoded.push(`  - ${decodeWeather(part)}`);
                 } else if (part.match(/^(AC|CI|CC)/)) {
@@ -248,7 +266,7 @@
                 } else {
                      decoded.push(`  - ${part}: Other remark`);
                 }
-            });
+            }
             return decoded.join('\n');
         }