Chunked decryption, resume & selection fixes

Implement chunked decryption of .m4s segments (avoid loading entire stream into memory) by changing decrypt() to accept a segment directory, process ~1GB chunks with mp4ff-decrypt, and concatenate results. Add resume support in segment downloader by skipping already downloaded .m4s files and initializing successful counter accordingly. Improve manifest handling: gracefully handle missing AVC/HEVC tracks, bruteforce ticks conditionally, and mark representations for removal when no valid tick is found. Add fallback unfiltered selection in select_track when filtered lookup yields no candidates. Replace naive UTC offset logic with explicit Europe/Paris timezone utilities and adjust related time conversion signatures. Bump project version to 1.0.

utils/input.py

@@ -439,8 +439,16 @@ def select_track(content_dict, quality_spec, content_type):
         candidates.extend(tracks)
 
     if not candidates:
-        logger.warning("No %s track found for '%s'.", content_type, quality_spec)
-        return None
+        if filter_part:
+            logger.warning(
+                "No %s track found for '%s'. Falling back to unfiltered selection.",
+                content_type, quality_spec
+            )
+            for key, tracks in content_dict.items():
+                candidates.extend(tracks)
+        if not candidates:
+            logger.warning("No %s track found for '%s'.", content_type, quality_spec)
+            return None
 
     if pref == "best":
         selected = max(candidates, key=lambda x: x["bandwidth"])