Fix pre-existing player issues: edit upload paths, playlist sync, DPI, console

src/edit_popup.py: pass and reproduce the server-side edited-media layout
('edited_media/<media_id>/') when saving an edit, falling back to the flat
folder when no media id is available, so uploads land where the server expects.

src/get_playlists_v2.py: preserve every server field (audio, muted, description,
id, position, ...) when rewriting playlist items, instead of rebuilding fixed
dicts that silently dropped them. Web-link items keep their original http(s) url
and are never downloaded.

windows/pyi_runtime_hook.py: declare per-monitor DPI awareness before SDL/Kivy
initialise, so on a scaled display the window is not virtualised to a smaller
resolution (which left a black strip and mis-scaled media).

windows/build_win.bat: optional code signing step for PCs with Smart App Control
enabled, driven by KIWY_SIGN_PFX / KIWY_SIGN_PFX_PASSWORD or a local
kiwy_signing.pfx.

windows/build.spec, windows/README_WINDOWS_BUILD.md, windows/development-track.md:
build notes and manifest updates.

windows/pyi_runtime_hook.py

@@ -10,6 +10,37 @@ import sys
 import platform
 from pathlib import Path
 
+
+def _set_process_dpi_awareness():
+    """Declare per-monitor DPI awareness BEFORE SDL/Kivy initialize.
+
+    On a display scaled above 100% (e.g. 1920x1080 @ 125%), Windows
+    virtualizes a non-DPI-aware app to the scaled-down size (1536x864).
+    Kivy then sizes its content area to the virtualized resolution, leaving a
+    black strip on one side and making images/videos render at the wrong size.
+    Must run before any SDL window is created, so this lives in the runtime
+    hook (the first Python code that runs in the frozen app).
+    """
+    try:
+        try:
+            aware = ctypes.c_int(2)  # PROCESS_PER_MONITOR_DPI_AWARE_V2
+            ctypes.windll.shcore.SetProcessDpiAwareness(aware)
+            return
+        except Exception:
+            pass
+        try:
+            ctypes.windll.user32.SetProcessDPIAware()
+            return
+        except Exception:
+            pass
+    except Exception:
+        pass
+
+
+if platform.system() == 'Windows':
+    import ctypes
+    _set_process_dpi_awareness()
+
 # ── IMPORTANT: Set Windows environment BEFORE any Kivy code runs ──
 # This must happen before main.py's top-level code executes, because
 # main.py sets SDL_VIDEODRIVER=wayland,x11,dummy which would crash on Windows.
@@ -23,6 +54,8 @@ os.environ['FFPYPLAYER_CODECS'] = 'h264,h265,vp9,vp8'
 os.environ['SDL_VIDEO_ALLOW_SCREENSAVER'] = '0'
 os.environ['KIVY_NO_FILELOG'] = '1'
 os.environ['KIVY_INPUTPROVIDERS'] = ''  # Let Kivy auto-detect on Windows
+# Use native physical pixels (fixes black strip on DPI-scaled displays).
+os.environ.setdefault('SDL_VIDEO_HIGHDPI', '1')
 
 # ── Capture ALL early output to a crash log ─────────────────────────
 # Ensure we catch any exception that happens before Logger is available.