renamer_app

End-to-end procedure for adding a new V2 file-renaming transformation mode — enum, config, params, transformer, orchestrator dispatch, DI, FXML, controller, tests.

Mermaid diagram syntax rules and patterns for architecture docs. Use when creating or updating any Mermaid diagram in docs/ARCHITECTURE.md or other doc files.

Java coding standards for the Renamer App — V2 immutable models with @Builder(setterPrefix = "with"), Guice DI, JPMS exports, virtual threads, and project conventions. Use when writing or reviewing any Java code.

JavaFX threading, FXML patterns, CSS rules, and Guice DI integration for the Renamer App UI. Use when writing or reviewing any JavaFX controller, FXML file, or CSS stylesheet in app/ui/.

JavaFX UI/UX design skill — visual design, layout composition, color tokens, typography, spacing systems, CSS styling, control theming, accessibility, and usability improvements for the Renamer App. Use whenever the task involves styling, beautifying, or improving visual appearance — choosing colors, fonts, layouts, spacing, CSS stylesheets, control variants, responsive sizing, dark/light themes, or any UI/UX polish. Trigger on phrases like "make it look better", "improve the UI", "redesign the layout", "style the controls", "create a theme", "CSS for JavaFX", or any visual/aesthetic concern. Complements the separate /javafx skill that handles technical/functional concerns (threading, DI, FXML loading). When both design and functional changes are needed, use this skill for design aspects and /javafx for wiring concerns.

Documentation standards for the Renamer App — README structure, ADR format, diagram standards, and inline comment rules. Use when writing or updating project documentation, README files, or Architecture Decision Records.

ExifTool commands for embedding datetime and GPS metadata into test files in test-data/. Use when generating or modifying test file metadata.

FFmpeg commands for generating synthetic base test media files in test-data/. Use when creating test images, videos, or audio files before adding metadata with /use-exiftool-metadata.

JUnit 5 / AssertJ / Mockito 5 testing patterns for the Renamer App. Use when writing or reviewing tests — what to mock vs instantiate directly, V2 builder syntax, @TempDir, AAA structure, and coverage rules.