Keep the logging call name captured before the format string in each
language's query and normalize it (e.g. log::warn, logger.warning,
spdlog::info, SPDLOG_ERROR) to a LogLevel on SourceRef. The level is
serialized as an optional "level" field in the srcRef output.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_014JycCPeVRxuveoeMtHnJmt

Names made of words joined by underscores, like lnav's log_debug() or
SPDLOG_INFO, map to the level at the end as long as another word looks
logging related.  Arguments before the format string, as in
syslog(LOG_ERR, ...) or spdlog::log(spdlog::level::warn, ...), are also
checked for a level and take precedence over the call name.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_014JycCPeVRxuveoeMtHnJmt

- Only take level constants from leading arguments that are names, so a
  string literal like "conn error" no longer sets the level of a later
  string in the same call.
- Require leading arguments to be qualified by something logging
  related (LOG_ERR, logging.WARNING, spdlog::level::warn), so a variable
  like `err` no longer overrides the call name.
- Require the qualifier of a call like `x.error` to look logging
  related, so warnings.warn and parser.error don't get a level.
- Split names on case changes so logInfo and LogWarning are recognized.
- Let the Java query match severe/fatal and log.log(Level.X, ...).
- Match level-first calls in Python (logger.log(logging.WARNING, ...))
  and Rust (log!(Level::Warn, ...), tracing::event!(Level::INFO, ...)).
- Parse the level from log messages and prefer source statements with
  the same level when candidates have the same quality.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01VN7ZsUqHrHHcBHoxTnSpjb

The job fails before any test runs because @vscode/test-electron can't
find the Electron binary in the current VS Code macOS download.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_014JycCPeVRxuveoeMtHnJmt

Every extracted statement now has a level.  Calls where we can't tell
the level, which might not be logging at all (printf, println!, print,
or any call that takes a string), get LogLevel::Unknown, and the
"level" field is always present in the srcRef output.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_014JycCPeVRxuveoeMtHnJmt

Annotate extracted log statements with their log level