Update user manual to v6.2 with Settings and Login Security sections

Update host page and team generation rules

Fix failed login attempt tracking not triggering UI updates

Track failed login attempts and warn before lockout

Add change password feature for email users

Fix double RUN in auto-generated game title

Replace OC text logo in nav sidebar with Logo4 SVG

Exclude cancelled and completed games from dashboard count

Remove Competitive and Casual filter buttons from dashboard

Gray out cancelled games on card and detail page

Hide format/level chips on cancelled game cards

Fix dashboard game count to exclude past games

Use React portal to escape parent stacking context for chat

Fix chat z-index by removing parent stacking context

Lower chat panel to cover nav menu (bottom-4)