Refactor code structure and remove redundant changes

codex-lens/build/lib/codexlens/search/__init__.py

@@ -0,0 +1,53 @@
+from .chain_search import (
+    ChainSearchEngine,
+    SearchOptions,
+    SearchStats,
+    ChainSearchResult,
+    quick_search,
+)
+
+# Clustering availability flag (lazy import pattern)
+CLUSTERING_AVAILABLE = False
+_clustering_import_error: str | None = None
+
+try:
+    from .clustering import CLUSTERING_AVAILABLE as _clustering_flag
+    from .clustering import check_clustering_available
+    CLUSTERING_AVAILABLE = _clustering_flag
+except ImportError as e:
+    _clustering_import_error = str(e)
+
+    def check_clustering_available() -> tuple[bool, str | None]:
+        """Fallback when clustering module not loadable."""
+        return False, _clustering_import_error
+
+
+# Clustering module exports (conditional)
+try:
+    from .clustering import (
+        BaseClusteringStrategy,
+        ClusteringConfig,
+        ClusteringStrategyFactory,
+        get_strategy,
+    )
+    _clustering_exports = [
+        "BaseClusteringStrategy",
+        "ClusteringConfig",
+        "ClusteringStrategyFactory",
+        "get_strategy",
+    ]
+except ImportError:
+    _clustering_exports = []
+
+
+__all__ = [
+    "ChainSearchEngine",
+    "SearchOptions",
+    "SearchStats",
+    "ChainSearchResult",
+    "quick_search",
+    # Clustering
+    "CLUSTERING_AVAILABLE",
+    "check_clustering_available",
+    *_clustering_exports,
+]