v0.3.0

What's Changed

• docs: m3 plan for sms and mms by @gesparza8138 in #46
• infra: toll-free number, protect configuration, opt-in page by @gesparza8138 in #47
• feat: sms schemas and guardrails by @gesparza8138 in #48
• feat: sms tools and stage infra by @gesparza8138 in #49
• infra: cfn service role may pass roles to sms-voice by @gesparza8138 in #50
• test: sms e2e with sandbox-aware skips by @gesparza8138 in #51
• docs: m3 prd corrections and sandbox finding by @gesparza8138 in #52

Full Changelog: v0.2.0...v0.3.0