Release v10.3.0

Changed

• Analyzer upgraded from ^9.0.0 to ^12.0.0 — migrated ~500 call sites across 70+ rule files to the new AST API (ClassDeclaration.body.members, ClassNamePart.typeName, PrimaryConstructorDeclaration, DottedName, etc.)
• Removed analyzer-9 compatibility extensions — DiagnosticCodeLowerCase and LintCodeLowerCase shims removed; lowerCaseName is now native in analyzer 12
• Updated CapturingRuleVisitorRegistry — added 5 new visitor methods and removed 4 obsolete ones to match the analyzer 12 RuleVisitorRegistry interface
• Updated test registry — PluginRegistry interface changes: enabled() method, DiagnosticCode parameter on registerFixForRule

Added

• Vibrancy scan cancel button — the progress notification now shows a Cancel button so users can abort a long-running scan
• Scan supersede — starting a new vibrancy scan automatically cancels any in-progress scan instead of silently dropping the request

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