fix: handle double quotes in regex scanner to allow spaces in glob patterns

[Whoaa512]

Fixes #321

Problem

Glob patterns with quoted strings containing spaces failed to parse in [[ ]] test commands:

# This failed to parse
[[ "${tmp}" = *"A B"* ]]

# Real-world example that also failed
[[ "${tmp}" = *"-----BEGIN CERTIFICATE-----"* ]]

Root Cause

The scanner tracked in_single_quote state but not in_double_quote when scanning REGEX_NO_SPACE tokens. When encountering a space inside double quotes, it incorrectly treated it as a regex-terminating space.

Fix

• Added in_double_quote to the State struct in the scanner
• Handle " character similar to ' for entering/exiting quoted strings
• Updated all three was_space checks to also consider in_double_quote

Testing

• Added test case for glob patterns with quoted spaces
• All 101 tests pass