M4 wrap — playlist browse + addon settings + upstream PR-77 notes

Sidecar Playlist op via rustypipe playlist(). Returns playlist metadata
block (id, name, channel, video_count) + items array. Verified live
against LTT's 'Consumer Advocacy' (PL8mG-RkN2uTzwoF72GqeqAJMI-N7scqtI):
returns the single video with full metadata.

Addon ?action=playlist&id=PL... lists items via _add_video_items reuse.
Verified via Files.GetDirectory JSON-RPC.

resources/settings.xml gains a 'dash_enabled' toggle (boolean, default
off). main.py checks ADDON.getSettingBool('dash_enabled') OR the
TORTTUBE_DASH env fallback before attempting the DASH path. Toggle via
Kodi Settings → Add-on settings → torttube, OR via
Addons.SetSettings JSON-RPC.

docs/upstream.md: filed a 'watching' entry for rustypipe PR #77
(Schmiddiii's late-May YouTube parsing fixes) with our independent
test data — player(), search(), and channel_videos() all still work
against current YouTube on 0.11.4, suggesting the PR fixes code paths
torttube doesn't yet exercise. Endorsement comment pending: gated on
creating a Sulkta-Coop codeberg account.

Observation from kodi.log: plugin.video.youtube successfully parsed a
DASH MPD with 26 streams via inputstream.adaptive on this same Pi —
proves DASH is solvable on our setup, just need to match the URL
pattern they use. M7 stabilization carrying forward.

Addon version 0.0.9.

addon/plugin.video.torttube/main.py

@@ -314,7 +314,13 @@ def _play(yt_id: str) -> None:
 
     mpd_bytes: bytes | None = None
     dash_resp: dict[str, Any] = {}
-    if os.environ.get("TORTTUBE_DASH") == "1":
+    dash_enabled = False
+    try:
+        dash_enabled = ADDON.getSettingBool("dash_enabled")
+    except Exception:
+        # Setting might not exist on older configs; treat as off.
+        pass
+    if dash_enabled or os.environ.get("TORTTUBE_DASH") == "1":
         mpd_bytes, dash_resp = _try_dash(yt_id)
     if mpd_bytes:
         details = dash_resp.get("details") or {}
@@ -638,6 +644,36 @@ def _search_directory(query: str | None = None) -> None:
     xbmcplugin.endOfDirectory(_HANDLE)
 
 
+def _playlist_directory(playlist_id: str) -> None:
+    """List a playlist's videos."""
+    try:
+        resp = _call_sidecar(
+            {"op": "playlist", "id": playlist_id, "limit": 100}, timeout_s=15
+        )
+    except Exception as e:
+        _log(f"playlist failed: {e}", xbmc.LOGERROR)
+        xbmcgui.Dialog().notification(
+            "torttube", f"playlist failed: {e}", xbmcgui.NOTIFICATION_ERROR, 4000
+        )
+        xbmcplugin.endOfDirectory(_HANDLE, succeeded=False)
+        return
+    if not resp.get("ok"):
+        xbmcgui.Dialog().notification(
+            "torttube",
+            f"playlist: {resp.get('error', 'unknown')}",
+            xbmcgui.NOTIFICATION_WARNING,
+            4000,
+        )
+        xbmcplugin.endOfDirectory(_HANDLE, succeeded=False)
+        return
+
+    items = resp.get("items") or []
+    pl = resp.get("playlist") or {}
+    _log(f"playlist {pl.get('name') or playlist_id}: {len(items)} items")
+    _add_video_items(items)
+    xbmcplugin.endOfDirectory(_HANDLE)
+
+
 def _channel_directory(channel_id: str) -> None:
     """List a channel's recent videos."""
     try:
@@ -707,6 +743,8 @@ def main() -> None:
         _search_directory(query=params.get("q"))
     elif action == "channel":
         _channel_directory(params.get("id") or "")
+    elif action == "playlist":
+        _playlist_directory(params.get("id") or "")
     elif action == "play_by_url":
         _play_by_url_prompt()
     else: