v1.17.2

1.17.2 (2025-09-13)

• fix(i18n): externalize hardcoded UI texts to i18n (nav, home stats/exports/demo, survey consent/form (b2f0630)
• chore(go fmt): format Go sources to satisfy CI (418a0d8)
• chore(ui): move Privacy/Terms/Cookies from header to footer for cleaner top nav (d8c1013)
• feat(auth,persist,spa): add logout endpoint + header action; MVP JSON snapshot persistence via SYNAP (c1c0ea7)
• feat(survey,home): hook hero/demo CTAs to /survey/SAMPLE; add polished answering UI with consent, pr (9ce3a6b)
• fix(auth,ui): return JSON errors for auth endpoints; parse error payload safely in Auth page; preven (536b870)
• refactor(ui,home): elevate visual hierarchy — add generous section rhythm, stat strip, balanced mosa (aac9c7f)