Merge pull request #2 from bahri-hirfanoglu/fix/cargo-fmt

docs: enhanced icon with terminal mockup and badges

docs: add 512x512 app icon

docs: taller promo image showing all elements

docs: redesign promo image

docs: add promo image for social sharing

Merge pull request #1 from bahri-hirfanoglu/fix/cargo-fmt

ci: mark conpty test as #[ignore] instead of --skip

ci: skip conpty_manual_test in CI (requires desktop session)

fix: resolve all clippy warnings (ptr_arg, while_let_loop, saturating_sub)

style: apply cargo fmt to all source files

ci: add GitHub Actions CI/release workflows, issue/PR templates

feat: add SVG logo with terminal green glow, update README header

fix: remove broken CI badge, add downloads badge

fix: responsive architecture diagram on landing page