fix: resolve CI/CD linting and formatting issues

- Replaced deprecated typing.Dict/List/Tuple with native types (UP035)
- Removed unused imports across all modules
- Fixed unused variables by replacing with _ prefix
- Added missing Optional type imports
- Reorganized imports for proper sorting (I001)
- Applied black formatting to all source files

loglens/parsers/factory.py

@@ -1,32 +1,32 @@
-"""Parser factory for automatic format detection."""
+'''Parser factory for automatic format detection.'''
 
-from typing import Dict, List, Optional, Type
+from typing import Optional
 
+from loglens.parsers.apache_parser import ApacheParser
 from loglens.parsers.base import LogFormat, LogParser, ParsedLogEntry
 from loglens.parsers.json_parser import JSONParser
 from loglens.parsers.syslog_parser import SyslogParser
-from loglens.parsers.apache_parser import ApacheParser
 
 
 class ParserFactory:
-    """Factory for creating and selecting log parsers."""
+    '''Factory for creating and selecting log parsers.'''
 
     def __init__(self):
-        self.parsers: Dict[LogFormat, Type[LogParser]] = {
+        self.parsers: dict[LogFormat, type[LogParser]] = {
             LogFormat.JSON: JSONParser,
             LogFormat.SYSLOG: SyslogParser,
             LogFormat.APACHE: ApacheParser,
         }
-        self._parser_instances: Dict[LogFormat, LogParser] = {}
+        self._parser_instances: dict[LogFormat, LogParser] = {}
 
     def get_parser(self, format: LogFormat) -> LogParser:
-        """Get parser instance for specified format."""
+        '''Get parser instance for specified format.'''
         if format not in self._parser_instances:
             self._parser_instances[format] = self.parsers[format]()
         return self._parser_instances[format]
 
     def detect_format(self, line: str) -> LogFormat:
-        """Detect log format from a sample line."""
+        '''Detect log format from a sample line.'''
         line = line.strip()
         if not line:
             return LogFormat.UNKNOWN
@@ -43,32 +43,38 @@ class ParserFactory:
 
         return LogFormat.UNKNOWN
 
-    def detect_format_batch(self, lines: List[str], sample_size: int = 10) -> LogFormat:
-        """Detect format from multiple lines."""
+    def detect_format_batch(self, lines: list[str], sample_size: int = 10) -> LogFormat:
+        '''Detect format from multiple lines.'''
         sample = lines[:sample_size] if len(lines) > sample_size else lines
 
         if not sample:
             return LogFormat.UNKNOWN
 
-        format_counts: Dict[LogFormat, int] = {
+        format_counts: dict[LogFormat, int] = {
             LogFormat.JSON: 0,
             LogFormat.SYSLOG: 0,
             LogFormat.APACHE: 0,
-            LogFormat.UNKNOWN: 0
+            LogFormat.UNKNOWN: 0,
         }
 
         for line in sample:
             format_detected = self.detect_format(line)
             format_counts[format_detected] += 1
 
-        if format_counts[LogFormat.JSON] > format_counts[LogFormat.SYSLOG] and \
-           format_counts[LogFormat.JSON] > format_counts[LogFormat.APACHE]:
+        if (
+            format_counts[LogFormat.JSON] > format_counts[LogFormat.SYSLOG]
+            and format_counts[LogFormat.JSON] > format_counts[LogFormat.APACHE]
+        ):
             return LogFormat.JSON
-        elif format_counts[LogFormat.SYSLOG] > format_counts[LogFormat.JSON] and \
-              format_counts[LogFormat.SYSLOG] > format_counts[LogFormat.APACHE]:
+        elif (
+            format_counts[LogFormat.SYSLOG] > format_counts[LogFormat.JSON]
+            and format_counts[LogFormat.SYSLOG] > format_counts[LogFormat.APACHE]
+        ):
             return LogFormat.SYSLOG
-        elif format_counts[LogFormat.APACHE] > format_counts[LogFormat.JSON] and \
-              format_counts[LogFormat.APACHE] > format_counts[LogFormat.SYSLOG]:
+        elif (
+            format_counts[LogFormat.APACHE] > format_counts[LogFormat.JSON]
+            and format_counts[LogFormat.APACHE] > format_counts[LogFormat.SYSLOG]
+        ):
             return LogFormat.APACHE
 
         if format_counts[LogFormat.JSON] > 0:
@@ -80,21 +86,22 @@ class ParserFactory:
 
         return LogFormat.UNKNOWN
 
-    def parse_lines(self, lines: List[str], format: Optional[LogFormat] = None) -> List[ParsedLogEntry]:
-        """Parse lines with automatic format detection."""
+    def parse_lines(
+        self, lines: list[str], format: Optional[LogFormat] = None
+    ) -> list[ParsedLogEntry]:
+        '''Parse lines with automatic format detection.'''
         if format is None:
             format = self.detect_format_batch(lines)
 
         if format == LogFormat.UNKNOWN:
-            return [ParsedLogEntry(
-                raw_line=line,
-                message="Unknown format",
-                line_number=i + 1
-            ) for i, line in enumerate(lines)]
+            return [
+                ParsedLogEntry(raw_line=line, message="Unknown format", line_number=i + 1)
+                for i, line in enumerate(lines)
+            ]
 
         parser = self.get_parser(format)
         return parser.parse_batch(lines)
 
-    def get_available_formats(self) -> List[LogFormat]:
-        """Get list of available log formats."""
+    def get_available_formats(self) -> list[LogFormat]:
+        '''Get list of available log formats.'''
         return list(self.parsers.keys())