fix: fix linting errors add future annotations import to all modules

Author: deepakdgupta1

src/knowcode/graph_builder.py

@@ -1,5 +1,6 @@
 """Graph builder that orchestrates parsing and constructs the semantic graph."""
 
+from __future__ import annotations
 from pathlib import Path
 from typing import Optional
 

src/knowcode/knowledge_store.py

@@ -1,5 +1,7 @@
 """Knowledge store with JSON persistence and querying."""
 
+from __future__ import annotations
+
 import json
 from dataclasses import asdict
 from pathlib import Path

src/knowcode/parsers/base.py

@@ -1,5 +1,6 @@
 """Base parser using Tree-sitter."""
 
+from __future__ import annotations
 from pathlib import Path
 from typing import Any, Optional
 

src/knowcode/parsers/markdown_parser.py

@@ -1,7 +1,10 @@
 """Markdown document parser."""
 
+from __future__ import annotations
+
 import re
 from pathlib import Path
+from typing import Any
 
 from knowcode.models import (
     Entity,

src/knowcode/parsers/python_parser.py

@@ -1,4 +1,7 @@
-"""Python source code parser using AST."""
+"""Python parser using standard ast module."""
+
+from __future__ import annotations
+
 
 import ast
 from pathlib import Path

src/knowcode/parsers/yaml_parser.py

@@ -1,5 +1,6 @@
 """YAML configuration file parser."""
 
+from __future__ import annotations
 from pathlib import Path
 from typing import Any
 

src/knowcode/scanner.py

@@ -1,5 +1,6 @@
 """File scanner with gitignore support."""
 
+from __future__ import annotations
 import os
 from dataclasses import dataclass
 from pathlib import Path

src/knowcode/signals.py

@@ -1,5 +1,6 @@
 """Runtime signal processing (e.g., coverage, traces)."""
 
+from __future__ import annotations
 import xml.etree.ElementTree as ET
 from pathlib import Path
 

src/knowcode/temporal.py

@@ -1,5 +1,7 @@
 """Temporal analysis of git history."""
 
+from __future__ import annotations
+from dataclasses import dataclass
 from datetime import datetime, timezone
 from pathlib import Path