security: scrub AWS identifiers and remove sync script

sync: add infra module + sync tooling (scrubbed)

fix: scrub AWS identifiers from public repo infra

infra: add Terraform module matching production AWS resources

fix: add trial checks to instance start route and trial-aware billing page

fix: block instance creation flow upfront when at trial limit

fix: add helper link to get Anthropic API key on create form

feat: implement 7-day free trial (1 agent, Haiku only, no credit card)

fix: remove all green accents, all white clean aesthetic

fix: video z-index stacking for hero background

fix: highlight 'open source' in green, ai.com plain white

feat: video hero background + solid white buttons

redesign: multi_engine inspired dark landing page

fix: disable img and any eslint rules

feat: add Discord link to nav, footer, and dashboard sidebar