[xcl-lens] Move instance members to class members

projects/xcl-lens/src/xcl_lens/parser/rccl.py

 import re
+from typing import Final
 
 import pandas as pd
 
 
 class RcclLogParser:
-    def __init__(self, verbose=False, hosts=None, ranks=None):
-        # Deduplicated set of (host, rank, content) tuples
-        self.log_entries: set[tuple[str, int, str]] = set()
-
-        # Verbosity flag used by report sections
-        self._verbose = verbose
-
-        # Filters
-        self._hosts = hosts if hosts is not None else []
-        self._ranks = [int(r) for r in ranks] if ranks is not None else []
-
     # Pattern -> output string or as-is
-        self.sys_patterns = {
+    sys_patterns: Final = {
         r"kernel version": None,
         r"ROCr version": None,
         r"RCCL version": None,
@@ -29,7 +19,7 @@ class RcclLogParser:
     }
 
     # Pattern -> column with strict validation
-        self.graph_info_fields = {
+    graph_info_fields: Final = {
         r"Pattern": ("Pattern", r"\d+"),
         r"crossNic": ("crossNic", r"\d+"),
         r"nChannels": ("nChannels", r"\d+"),
@@ -39,7 +29,7 @@ class RcclLogParser:
     }
 
     # Pattern -> column with strict validation
-        self.cl_transfer_fields = {
+    cl_transfer_fields: Final = {
         r"protocol": ("protocol", r"Simple|LL|LL128"),
         r"nbytes": ("nbytes", r"\d+"),
         r"algorithm": ("algorithm", r"Tree|Ring"),
@@ -51,7 +41,7 @@ class RcclLogParser:
     }
 
     # Pattern -> column with strict validation
-        self.p2p_fields = {
+    p2p_fields: Final = {
         r"p2p : rank": ("local", r"\d+"),
         r"send rank": ("send", r"\d+"),
         r"recv rank": ("recv", r"\d+"),
@@ -61,6 +51,17 @@ class RcclLogParser:
         r"protocol": ("protocol", r"Simple|LL|LL128"),
     }
 
+    def __init__(self, verbose=False, hosts=None, ranks=None):
+        # Deduplicated set of (host, rank, content) tuples
+        self.log_entries: set[tuple[str, int, str]] = set()
+
+        # Verbosity flag used by report sections
+        self._verbose = verbose
+
+        # Filters
+        self._hosts = hosts if hosts is not None else []
+        self._ranks = [int(r) for r in ranks] if ranks is not None else []
+
     def collect(self, line):
         self._preprocess_line(line)