playlists + player: every service's list through one door with its names matched for real, and shuffle that readies exactly what it promises

src-tauri/src/youtube_setlist.rs

@@ -122,7 +122,7 @@ pub(crate) fn slice_json_after<'a>(html: &'a str, needle: &str) -> Option<&'a st
 /// applying `f` to the value. Youtube's trees are deep, volatile, and
 /// renderer-name-happy; searching for leaf keys survives their reshuffles
 /// better than hardcoded paths.
-fn walk<'a>(root: &'a Value, key: &str, f: &mut dyn FnMut(&'a Value)) {
+pub(crate) fn walk<'a>(root: &'a Value, key: &str, f: &mut dyn FnMut(&'a Value)) {
     match root {
         Value::Object(map) => {
             if let Some(v) = map.get(key) {
@@ -143,7 +143,7 @@ fn walk<'a>(root: &'a Value, key: &str, f: &mut dyn FnMut(&'a Value)) {
 
 /// First string under any of `keys` in reading order — for label-ish leaves
 /// ("simpleText", nested runs) where youtube varies the wrapper.
-fn first_string(v: &Value, keys: &[&str]) -> Option<String> {
+pub(crate) fn first_string(v: &Value, keys: &[&str]) -> Option<String> {
     match v {
         Value::String(s) => Some(s.clone()),
         _ => {
@@ -292,7 +292,7 @@ pub(crate) fn comment_texts(next_response: &Value) -> Vec<(String, String)> {
 
 /// Flatten a `runs`/`simpleText` rich-text node into plain text, preserving
 /// the run boundaries' own newlines (timestamps arrive as separate runs).
-fn collect_runs(v: &Value) -> String {
+pub(crate) fn collect_runs(v: &Value) -> String {
     if let Some(s) = v.get("simpleText").and_then(Value::as_str) {
         return s.to_string();
     }