chore(v1.1.7): version bumps + CHANGELOG

- workspace 1.1.6 → 1.1.7
- SDK schema 1.7 → 1.8 (SecretsService, EmailService, TriggerEvent::Email)
- dashboard 0.12.0 → 0.13.0
- CHANGELOG entry: secrets, outbound email, inbound email, retroactive
  dead_letter fix note, realtime-key encryption migration (+ v1.1.8 drop)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

crates/shared/src/version.rs

@@ -58,7 +58,15 @@ pub const PRODUCT_VERSION: &str = env!("CARGO_PKG_VERSION");
 /// `RealtimeBroadcaster` / `RealtimeEvent` / `RealtimeAuthority` traits;
 /// the `topics` registry + admin endpoints; the `@picloud/client`
 /// TypeScript package).
-pub const SDK_VERSION: &str = "1.7";
+///
+/// 1.8 additions (v1.1.7): `secrets::{get,set,delete,list}(name)` —
+/// encrypted per-app secrets (AES-256-GCM at rest under the process
+/// master key); `email::{send,send_html}(#{...})` — outbound email via
+/// an env-configured SMTP relay; and `ctx.event.email` for
+/// `email:receive`-trigger handlers (inbound email POSTed to the webhook
+/// receiver). The `Services` bundle gains `secrets: Arc<dyn
+/// SecretsService>` and `email: Arc<dyn EmailService>`.
+pub const SDK_VERSION: &str = "1.8";
 
 /// HTTP API major version. Appears in URL paths as `/api/v{N}/...`.
 /// Bump (new integer + new URL prefix) when the request/response