feat: status translation overrides via YAML config

report.status_translation in YAML config overrides/extends the builtin
STATUS_TRANSLATION dictionary; without the section behavior is unchanged.

- AppConfig.report_status_translation + _resolve_str_dict (warns and
  skips non-scalar values, resolves ${VAR} references)
- Config.get_status_translation() returns merged copy (lazy import,
  builtin dict never mutated)
- build_grouped_report() accepts optional status_translation parameter
- --init-config template gains commented example, docs/CONFIG.md updated

Closes #65

redmine_reporter/cli.py

@@ -136,6 +136,16 @@ def _run_init_config(config_path: str, force: bool) -> int:
         yaml.dump(
             data, fh, allow_unicode=True, default_flow_style=False, sort_keys=False
         )
+        fh.write(
+            "\n"
+            "# report.status_translation: переопределение/дополнение перевода\n"
+            "# статусов Redmine. Без секции используется встроенный словарь.\n"
+            "# Пример:\n"
+            "# report:\n"
+            "#   status_translation:\n"
+            '#     "New": "Новая"\n'
+            '#     "Wait Release": "Ожидает релиза"\n'
+        )
     path.chmod(0o600)
 
     sections_found = [s for s in data if data[s]]
@@ -445,6 +455,7 @@ def main(argv: Optional[List[str]] = None) -> int:
         issue_hours,
         fill_time=not no_time,
         by_activity=args.by_activity,
+        status_translation=Config.get_status_translation(),
     )
 
     if args.summary: