fix(lint): resolve pylint and pyright issues on egress-log-option

- egress.py: extract _render_match_entry helper to reduce nesting depth
- egress_addon_core.py: make request_method/request_headers keyword-only
  to satisfy too-many-positional-arguments; wrap long lazy import lines
- egress_addon.py: remove unused Route import; add pylint disable for
  import-error on sidecar-only mitmproxy/egress_addon_core imports
- dlp_detectors.py: remove dead _min_distance function (superseded by
  _closest_pair)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

bot_bottle/dlp_detectors.py

@@ -147,22 +147,6 @@ JAILBREAK_PHRASES: tuple[re.Pattern[str], ...] = (
 PROXIMITY_CHARS = 500
 
 
-def _min_distance(
-    a_matches: list[re.Match[str]],
-    b_matches: list[re.Match[str]],
-) -> int | None:
-    """Smallest char distance between any pair of matches."""
-    if not a_matches or not b_matches:
-        return None
-    best = None
-    for a in a_matches:
-        for b in b_matches:
-            gap = max(0, max(a.start(), b.start()) - min(a.end(), b.end()))
-            if best is None or gap < best:
-                best = gap
-    return best
-
-
 def _closest_pair(
     a_matches: list[re.Match[str]],
     b_matches: list[re.Match[str]],