fix: player connectivity and media download pipeline

- nginx: add /api/ shortcut block (no portal auth, X-Script-Name /digiserver,
  Host $http_host) so players can reach DigiServer API without /digiserver prefix
- nginx: use $http_host in /api/ block so Flask host_url includes port — fixes
  media download URLs missing :8080 (was http://ip/digiserver/... not http://ip:8080/...)
- player main.py: fix double-port bug when server_ip already contains a port
  (e.g. 192.168.0.230:8080 was producing http://192.168.0.230:8080:80)
- get_playlists_v2.py: force re-sync when server version differs OR local media
  files are missing on disk — fixes stale playlist after server reset
- digiserver api.py: playlist endpoint builds full media URLs using script_root
  from X-Script-Name header set by nginx
- weblink support, player build/deploy improvements, manage-playlist AJAX prefix fix

digiserver-v2/app/blueprints/content.py

@@ -6,6 +6,9 @@ from werkzeug.utils import secure_filename
 from typing import Optional
 import os
 import threading
+import uuid
+from datetime import datetime
+from urllib.parse import urlparse
 
 from app.extensions import db, cache
 from app.models import Content, Playlist, Player
@@ -201,8 +204,10 @@ def manage_playlist_content(playlist_id: int):
     # Get content in playlist (ordered)
     playlist_content = playlist.get_content_ordered()
     
-    # Get all available content not in this playlist
-    all_content = Content.query.all()
+    # Get all available content not in this playlist.
+    # Web links are created on demand per playlist, so they are not offered
+    # as reusable library items here.
+    all_content = Content.query.filter(Content.content_type != 'weblink').all()
     playlist_content_ids = {c.id for c in playlist_content}
     available_content = [c for c in all_content if c.id not in playlist_content_ids]
     
@@ -262,6 +267,72 @@ def add_content_to_playlist(playlist_id: int):
     return redirect(url_for('content.manage_playlist_content', playlist_id=playlist_id))
 
 
+@content_bp.route('/playlist/<int:playlist_id>/add-weblink', methods=['POST'])
+@login_required
+def add_weblink_to_playlist(playlist_id: int):
+    """Create a web link content item and add it to the playlist."""
+    playlist = Playlist.query.get_or_404(playlist_id)
+
+    try:
+        web_url = (request.form.get('url') or '').strip()
+        duration = request.form.get('duration', type=int, default=30)
+        description = (request.form.get('description') or '').strip() or None
+
+        # Validate the URL: only http/https schemes are allowed (avoid file://, etc.)
+        parsed = urlparse(web_url)
+        if parsed.scheme.lower() not in ('http', 'https') or not parsed.netloc:
+            flash('Please enter a valid http:// or https:// web address.', 'warning')
+            return redirect(url_for('content.manage_playlist_content', playlist_id=playlist_id))
+
+        if duration is None or duration < 1:
+            duration = 30
+
+        # Create a weblink Content row. filename is a synthetic unique label
+        # (no file on disk); the real target lives in the url column.
+        content = Content(
+            filename=f'weblink-{uuid.uuid4().hex[:12]}',
+            content_type='weblink',
+            url=web_url,
+            duration=duration,
+            description=description or web_url,
+            uploaded_at=datetime.utcnow(),
+        )
+        db.session.add(content)
+        db.session.flush()  # assign content.id
+
+        # Append to the end of the playlist
+        from sqlalchemy import select, func
+
+        max_pos = db.session.execute(
+            select(func.max(playlist_content.c.position)).where(
+                playlist_content.c.playlist_id == playlist_id
+            )
+        ).scalar() or 0
+
+        db.session.execute(
+            playlist_content.insert().values(
+                playlist_id=playlist_id,
+                content_id=content.id,
+                position=max_pos + 1,
+                duration=duration,
+            )
+        )
+
+        playlist.increment_version()
+        db.session.commit()
+        cache.clear()
+
+        log_action('info', f'Added web link "{web_url}" to playlist "{playlist.name}"')
+        flash('Web link added to playlist.', 'success')
+
+    except Exception as e:
+        db.session.rollback()
+        log_action('error', f'Error adding web link to playlist: {str(e)}')
+        flash('Error adding web link to playlist.', 'danger')
+
+    return redirect(url_for('content.manage_playlist_content', playlist_id=playlist_id))
+
+
 @content_bp.route('/playlist/<int:playlist_id>/remove-content/<int:content_id>', methods=['POST'])
 @login_required
 def remove_content_from_playlist(playlist_id: int, content_id: int):
@@ -277,6 +348,12 @@ def remove_content_from_playlist(playlist_id: int, content_id: int):
             (playlist_content.c.content_id == content_id)
         )
         db.session.execute(stmt)
+
+        # Web link items are playlist-specific and have no media-library
+        # presence, so delete the orphan Content row when it is removed.
+        content = db.session.get(Content, content_id)
+        if content is not None and content.content_type == 'weblink':
+            db.session.delete(content)
         
         playlist.increment_version()
         db.session.commit()