refactor(download): remove ProviderCore/download.py, move sanitize_filename to SYS.utils, replace callers to use API.HTTP.HTTPClient

SYS/result_table.py

@@ -359,6 +359,8 @@ class ResultRow:
     columns: List[ResultColumn] = field(default_factory=list)
     selection_args: Optional[List[str]] = None
     """Arguments to use for this row when selected via @N syntax (e.g., ['-item', '3'])"""
+    selection_action: Optional[List[str]] = None
+    """Full expanded stage tokens that should run when this row is selected."""
     source_index: Optional[int] = None
     """Original insertion order index (used to map sorted views back to source items)."""
     payload: Optional[Any] = None
@@ -648,6 +650,11 @@ class ResultTable:
         if 0 <= row_index < len(self.rows):
             self.rows[row_index].selection_args = selection_args
 
+    def set_row_selection_action(self, row_index: int, selection_action: List[str]) -> None:
+        """Specify the entire stage tokens to run for this row on @N."""
+        if 0 <= row_index < len(self.rows):
+            self.rows[row_index].selection_action = selection_action
+
     def set_header_lines(self, lines: List[str]) -> "ResultTable":
         """Attach metadata lines that render beneath the title."""
         self.header_lines = [line for line in lines if line]
@@ -827,6 +834,30 @@ class ResultTable:
         if hasattr(result, "annotations") and result.annotations:
             row.add_column("Annotations", ", ".join(str(a) for a in result.annotations))
 
+        try:
+            md = getattr(result, "full_metadata", None)
+            md_dict = dict(md) if isinstance(md, dict) else {}
+        except Exception:
+            md_dict = {}
+
+        try:
+            selection_args = getattr(result, "selection_args", None)
+        except Exception:
+            selection_args = None
+        if selection_args is None:
+            selection_args = md_dict.get("_selection_args") or md_dict.get("selection_args")
+        if selection_args:
+            row.selection_args = [str(a) for a in selection_args if a is not None]
+
+        try:
+            selection_action = getattr(result, "selection_action", None)
+        except Exception:
+            selection_action = None
+        if selection_action is None:
+            selection_action = md_dict.get("_selection_action") or md_dict.get("selection_action")
+        if selection_action:
+            row.selection_action = [str(a) for a in selection_action if a is not None]
+
     def _add_result_item(self, row: ResultRow, item: Any) -> None:
         """Extract and add ResultItem fields to row (compact display for search results).