generalize convert-to-mp3 into convert-audio with selectable target format

- rename task to convert-audio, support mp3/flac/wav/ogg/aac/opus targets
- add options input type with selectable pill buttons in UI
- extend seed script parser to handle YAML list properties (options)

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

src/databases/officer_db/seed-tasks.ts

@@ -48,24 +48,52 @@ function parseFrontmatter(content: string) {
   }
   meta.trigger = triggers.length > 0 ? triggers : undefined;
 
-  // Parse inputs (simplified — store as-is for now)
+  // Parse inputs
   const inputsMatch = yaml.match(/^inputs:\s*\n((?:[ \t]+.+\n?)*)/m);
   if (inputsMatch) {
     const inputBlock = inputsMatch[1]!;
-    const inputEntries: Record<string, Record<string, string>> = {};
+    const inputEntries: Record<string, Record<string, string | string[]>> = {};
     let currentInput: string | null = null;
+    let currentListKey: string | null = null;
+    let currentList: string[] = [];
+
+    const flushList = () => {
+      if (currentInput && currentListKey && currentList.length > 0) {
+        inputEntries[currentInput]![currentListKey] = currentList;
+      }
+      currentListKey = null;
+      currentList = [];
+    };
+
     for (const line of inputBlock.split('\n')) {
       const topMatch = line.match(/^\s{2}(\w[\w_-]*):\s*$/);
       if (topMatch) {
+        flushList();
         currentInput = topMatch[1]!;
         inputEntries[currentInput] = {};
         continue;
       }
-      const propMatch = line.match(/^\s{4}(\w[\w_-]*):\s*(.+)$/);
+      // List item (6 spaces + dash)
+      const listItemMatch = line.match(/^\s{6}-\s*(.+)$/);
+      if (listItemMatch && currentInput && currentListKey) {
+        currentList.push(listItemMatch[1]!.trim());
+        continue;
+      }
+      // Property with value or start of list
+      const propMatch = line.match(/^\s{4}(\w[\w_-]*):\s*(.*)$/);
       if (propMatch && currentInput) {
-        inputEntries[currentInput]![propMatch[1]!] = propMatch[2]!.trim();
+        flushList();
+        const value = propMatch[2]!.trim();
+        if (value === '') {
+          // Start of a list (e.g. "options:")
+          currentListKey = propMatch[1]!;
+          currentList = [];
+        } else {
+          inputEntries[currentInput]![propMatch[1]!] = value;
+        }
       }
     }
+    flushList();
     if (Object.keys(inputEntries).length > 0) {
       meta.inputs = inputEntries;
     }