[kvlonge]

Why

Snowflake hierarchy queries use START WITH inside ordinary query scopes. The SQL Rule tokenizer treated every nested WITH token as a nested CTE, producing a false SQBRSQL036 finding for valid hierarchy syntax.

Changes

• recognize WITH preceded by the previous significant START token as hierarchy syntax
• retain nested CTE and recursive CTE detection for all other WITH tokens
• add focused regression coverage with a hierarchy query inside a top-level CTE

Verification

• focused native SQL-lint test
• cargo clippy -p sqlbuild-rules-native --all-targets --all-features -- -D warnings
• make check-ci
• cache-free compile of a downstream Snowflake hierarchy model: 0 errors, 0 warnings
• independent focused review
• public repository hygiene scan