updated to run on Windows and add est capabilities

src/config.py

@@ -58,8 +58,8 @@ def load_config() -> Config:
     claude_key = os.getenv("CLAUDE_SESSION_KEY", "").strip() or None
     export_dir = Path(os.getenv("EXPORT_DIR", "./exports")).expanduser()
     output_structure = os.getenv("OUTPUT_STRUCTURE", "provider/project/year").strip()
-    cache_dir = Path(os.getenv("CACHE_DIR", "~/.ai-chat-exporter")).expanduser()
-    log_file = os.getenv("LOG_FILE", "~/.ai-chat-exporter/logs/exporter.log").strip()
+    cache_dir = Path(os.getenv("CACHE_DIR", "./cache")).expanduser()
+    log_file = os.getenv("LOG_FILE", "./cache/logs/exporter.log").strip()
 
     # Joplin
     joplin_token = os.getenv("JOPLIN_API_TOKEN", "").strip() or None
@@ -101,7 +101,7 @@ def load_config() -> Config:
     if not chatgpt_token and not claude_key:
         logger.warning(
             "Neither CHATGPT_SESSION_TOKEN nor CLAUDE_SESSION_KEY is set. "
-            "Run 'python -m src.main auth' to configure credentials."
+            "Run 'ai-chat-exporter auth' to configure credentials."
         )
 
     # Create and validate output directory
@@ -173,7 +173,7 @@ def _validate_chatgpt_token(token: str) -> datetime | None:
     if delta.total_seconds() < 0:
         logger.warning(
             "CHATGPT_SESSION_TOKEN expired at %s. "
-            "Run 'python -m src.main auth' to refresh it.",
+            "Run 'ai-chat-exporter auth' to refresh it.",
             expiry.strftime("%Y-%m-%d %H:%M UTC"),
         )
     elif delta.total_seconds() < 86400: