Replace f-string logging with parameterized logging calls

[Copilot]

Three log statements used f-strings instead of parameterized logging, causing eager string formatting regardless of log level and breaking structured log grouping by template.

Changes

• novelforge/routes/sessions.py: Replace f-strings in delete_session() for the info and error log calls
• novelforge/__init__.py: Replace f-string in get_llm_log() for the warning log call

# Before
logger.info(f"Deleted session file {session_file}")
logger.error(f"Failed to delete session file: {e}")
logger.warning(f"LLM log file not found at {log_path}")

# After
logger.info("Deleted session file %s", session_file)
logger.error("Failed to delete session file: %s", e)
logger.warning("LLM log file not found at %s", log_path)

[Copilot]

Pull request overview

Updates logging statements to use parameterized logging instead of f-strings, avoiding eager string formatting when the relevant log level is disabled and keeping message templates consistent for downstream log processing.

Changes:

• Replace f-string logger.info/logger.error calls in delete_session() with parameterized logging.
• Replace f-string logger.warning call in get_llm_log() with parameterized logging.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
novelforge/routes/sessions.py	Switches session deletion info/error logs to parameterized calls.
novelforge/__init__.py	Switches missing-LLM-log warning to a parameterized call.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.