Cleanup: duplicated/dead CSS rule blocks in style.css

## Summary `src-shared/public/style.css` has several fully duplicated rule blocks (likely from a copy/paste during iterative styling) that add noise and make future edits error-prone (a developer might edit one copy and not realize a second, later copy in the cascade still exists). ## Details - `* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }` appears at lines 14-17 and again (with two extra properties) at lines 25-30. - `#status-dot`, `.connected #status-dot`, `#status`, `.connected #status` rule blocks appear twice, identically: lines 80-102 and again at lines 104-127. ## Recommended Fix - Remove the duplicate blocks, keeping a single definition of each selector. - Do a broader pass for any other accidental duplication in the stylesheet while in there. - No functional/visual change expected — this is pure cleanup (later rules with identical specificity just silently overrode earlier ones, so behavior is unaffected, but the file is confusing to maintain as-is).