docs: update Agent Skills section emoji to 🔥

fix: propagate detected API provider to jta commands in skill

refactor: remove reference.md from skill

refactor: rename skill directory from jta-translation to jta

refactor: simplify skill name from jta-translation to jta

feat: add agent skill for jta translation

docs: remove roadmap section from README

docs: improve agentic reflection description in intro paragraph

docs: improve agentic reflection mechanism description in READMEs

ci: add paths-ignore to skip tests for documentation changes

fix: change MultipleBatches test to sequential execution

docs: move table of contents after introduction paragraph

docs: add table of contents to README files and optimize CI triggers

fix: validate complete batch response parsing to prevent missing translations

fix: resolve lint errors in test files