Epic C: Live Navigation

[fsecada01]

Epic C — Live Navigation · Milestone: 0.7.0b · Depends on B1 · See claudedocs/dev_plan_production_grade_2026-06-24.md

• C1 SPA-style navigation (intercept links/forms, swap, pushState history/back)
• C2 Loading indicator/progress on slow navigations
• C3 Scroll preservation/restoration
• C4 In-place param update vs full navigate distinction
• C5 Prefetch-on-hover / persist-element / active-link