Can't parse escaped double quotes

```thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: TokenizerError("Expected close delimiter '\"' before EOF. at Line: 12920, Column 429")', src/main.rs:8:54```

The line contains escaped double quotes:

`'S-130, 190 , 290, 390 in 2005, 491 in 2012, 490 in 2017, L-180, 280, 380, WIMS Course, Wildfire Analyst Training, Misc. Ops and Plans Related Courses, Misc. \"I\" Courses.'`

Reproduce the panic using the escaped-quote input shown in the issue and the example entry point at src/main.rs:8. Trace the tokenizer’s handling of escaped double quotes and verify that this line parses successfully without the reported EOF error. Done means the provided input no longer triggers the TokenizerError.

Written by the indexing model from the issue text.