v0.4.0

What's Changed

• Cleanup pass for dead code and docs by @jssblck in #25
• Add Bash substitution rules by @jssblck in #26
• Verify Python syntax tree support by @jssblck in #36
• Verify Go SyntaxTree support by @jssblck in #35
• [codex] Verify Rust syntax tree support by @jssblck in #37
• Verify TypeScript SyntaxTree support by @jssblck in #43
• Verify Kotlin syntax tree support by @jssblck in #40
• Keep SyntaxTree docs TypeScript-focused by @jssblck in #44
• Verify Java SyntaxTree language support by @jssblck in #42
• Verify JavaScript syntax tree support by @jssblck in #38
• Verify CSharp SyntaxTree language support by @jssblck in #39
• Verify Haskell SyntaxTree support by @jssblck in #41
• Document CI check mode by @jssblck in #45
• Tighten rule config validation by @jssblck in #46
• Warn on uninspectable Codex apply_patch input by @jssblck in #49
• Polish setup installers and syntaxtree CLI by @jssblck in #47
• Harden External content matcher execution by @jssblck in #48
• Polish release docs and metadata by @jssblck in #50
• Document Nudge release version contract by @jssblck in #51
• [codex] Back up provider hook configs during setup by @jssblck in #53
• Add Markdown code block targets by @jssblck in #55
• Fix nudge check empty explicit targets by @jssblck in #52

Full Changelog: v0.3.0...v0.4.0