chore(main): release rable 0.2.0

[repository-butler]

🤖 I have created a release beep boop

0.2.0 (2026-04-18)

⚠ BREAKING CHANGES

• tighten lexer API surface and relocate WordSpan to ast (#70)

Bug Fixes

• format: align cmdsub reformatter with bash canonical form (#49) (c7a4411)
• lexer: accept sloppy heredoc terminator in cmdsub mode (#50) (40f394f)
• lexer: backticks opaque when content is invalid (#71) (e72166f), closes #38
• lexer: disable reserved-word recognition after assignment words (#44) (42e1fc0)
• lexer: stop treating ]] and unbalanced [...] as special outside conditionals (#45) (4bf5a5c)
• parser: fall back from (( … )) arith to nested subshells (#48) (1437f00)

Code Refactoring

• format: introduce Formatter struct (#65) (d965a8f)
• lexer: drop Result<Token> wrapper from operator readers (#62) (d52a841)
• lexer: split read_word_token into classify + advance + dispatch helpers (#63) (3ba09f5)
• parser: extract fill_heredoc_contents visitor helpers (#68) (40e6165)
• parser: extract helpers from three oversize parsers (#69) (25d0762)
• sexp: dispatch NodeKind Display to per-category helpers (#66) (44b0330)
• sexp: table-drive ANSI-C escape dispatch (#67) (91a5267)
• tighten lexer API surface and relocate WordSpan to ast (#70) (5171d01)

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[repository-butler]

🤖 Created releases:

• rable-v0.2.0

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