docs: drop empty hardware-verification section from Build Status
Resolve three hardware-verification items: charging, battery spec, LRA polarity - Charging: confirmed, states as fact (XIAO onboard charger over USB-C) - Battery: PKCELL LP552035, 350 mAh, 3.7V LiPo, qty 2 confirmed - LRA polarity: corrected — polarity does not matter for the LRA, but tactors should be wired consistently for easier troubleshooting. VLV101040A part number and 250 Hz resonant frequency confirmed as-is. - Build-Status: needs-hardware-verification table cleared of resolved rows
docs: convert emoji callouts to GitHub markdown alerts Replace emoji-prefixed blockquotes (🚧 📷 ⚠️) with native GitHub alert syntax ([!NOTE], [!IMPORTANT], [!WARNING], [!CAUTION]) across the wiki. The alert renders its own icon and colour, so the emoji is dropped from inside the blocks; Build-Status.md's three section heading emoji are left as-is since they're the status tracker's scannable taxonomy, not callouts.
docs: flag unverified LRA claims and fix photo/piece-count consistency - Build-Status.md now flags Part 3's LRA part number and connector polarity claim as carried over from earlier-generation documentation and unconfirmed against a source or assembled hardware - Part 5 and Part 6 now carry the photos-pending callout that Build-Status.md already lists them under - Part-4's intro now names all 7 housing pieces, matching the Parts and Tools List footnote
docs: fix Part-3 spring count and flag battery capacity gap
docs: add Part 5 fingertip mounting Part 6 harness wiring
docs: remove v2 archive, add sidebar and build status