Module parser 

Recursive descent parser for the fabula DSL.

The parser is designed for composability: downstream DSLs can reuse it to parse fabula pattern syntax embedded in their own blocks. Key entry points:

• Parser::parse_pattern_body() — parse stages, negations, and temporals without the pattern name { } wrapper
• Parser::pos() / Parser::into_inner() — read or recover the cursor position for resumable parsing
• Parser::from_tokens_at() — construct a parser at a specific position in an existing token stream

Structs

Parser

Parser state: a cursor over a token stream.