Refactor code structure and remove redundant changes

codex-lens/build/lib/codexlens/errors.py

@@ -0,0 +1,59 @@
+"""CodexLens exception hierarchy."""
+
+from __future__ import annotations
+
+
+class CodexLensError(Exception):
+    """Base class for all CodexLens errors."""
+
+
+class ConfigError(CodexLensError):
+    """Raised when configuration is invalid or cannot be loaded."""
+
+
+class ParseError(CodexLensError):
+    """Raised when parsing or indexing a file fails."""
+
+
+class StorageError(CodexLensError):
+    """Raised when reading/writing index storage fails.
+
+    Attributes:
+        message: Human-readable error description
+        db_path: Path to the database file (if applicable)
+        operation: The operation that failed (e.g., 'query', 'initialize', 'migrate')
+        details: Additional context for debugging
+    """
+
+    def __init__(
+        self,
+        message: str,
+        db_path: str | None = None,
+        operation: str | None = None,
+        details: dict | None = None
+    ) -> None:
+        super().__init__(message)
+        self.message = message
+        self.db_path = db_path
+        self.operation = operation
+        self.details = details or {}
+
+    def __str__(self) -> str:
+        parts = [self.message]
+        if self.db_path:
+            parts.append(f"[db: {self.db_path}]")
+        if self.operation:
+            parts.append(f"[op: {self.operation}]")
+        if self.details:
+            detail_str = ", ".join(f"{k}={v}" for k, v in self.details.items())
+            parts.append(f"[{detail_str}]")
+        return " ".join(parts)
+
+
+class SearchError(CodexLensError):
+    """Raised when a search operation fails."""
+
+
+class IndexNotFoundError(CodexLensError):
+    """Raised when a project's index cannot be found."""
+