feat: phase 4 integrations — connectors, rybbit analytics, webhooks

- core.integrations (migration 00005) with AES-256-GCM-encrypted
  credentials (PRIMORA_ENCRYPTION_KEY, hex/base64, dev fallback);
  has_credentials serialization only — secrets never leave the server
- /projects/:id/integrations list/create/delete/test; health check hits
  the stored base URL with a 5s timeout and records status
- Rybbit connector: GET …/integrations/:id/analytics proxies
  /api/organizations + /api/sites/* server-side into a normalized shape
- core.webhooks + core.webhook_deliveries; CRUD, deliveries, test, and
  POST …/deploy-markers. Events: issue.created (new fingerprint on
  ingest), deploy.marker, webhook.test. X-Primora-Signature HMAC-SHA256
  over the raw body; in-process dispatcher, 3 attempts, quadratic
  backoff, 10s timeout, pending-scan on boot
- HTTPS enforced for public targets; HTTP allowed for loopback/private/
  self-hosted sinks
- Integrations page (connectors + webhooks tabs, inline analytics,
  delivery log, secret-shown-once), demo-mode stubs
- 12 new primora_* MCP tools
- workspace 0.4.0

Authored By: TDvorak <[email protected]>

apps/frontend/src/components/AppShell.tsx

@@ -9,6 +9,7 @@ import {
   IconCollections,
   IconDatabases,
   IconTelemetry,
+  IconIntegrations,
   IconAudit,
   IconAuth,
   IconSettings,
@@ -28,6 +29,7 @@ export type ViewType =
   | "collections"
   | "databases"
   | "telemetry"
+  | "integrations"
   | "auth"
   | "audit"
   | "settings";
@@ -43,14 +45,15 @@ const projectNav: NavEntry[] = [
   { id: "dashboard", label: "Overview", icon: IconOverview },
   { id: "databases", label: "Databases", shortLabel: "DBs", icon: IconDatabases },
   { id: "telemetry", label: "Telemetry", shortLabel: "Signals", icon: IconTelemetry },
+  { id: "integrations", label: "Integrations", shortLabel: "Integr.", icon: IconIntegrations },
   { id: "storage", label: "Storage", icon: IconStorage },
   { id: "collections", label: "Collections", icon: IconCollections },
   { id: "auth", label: "Authentication", shortLabel: "Auth", icon: IconAuth },
   { id: "audit", label: "Audit log", shortLabel: "Audit", icon: IconAudit },
 ];
 
-// Instagram-style bottom bar caps at five slots — Collections and Telemetry stay reachable via Menu.
-const bottomNav: NavEntry[] = projectNav.filter((e) => e.id !== "collections" && e.id !== "telemetry");
+// Instagram-style bottom bar caps at five slots — the rest stay reachable via Menu.
+const bottomNav: NavEntry[] = projectNav.filter((e) => !["collections", "telemetry", "integrations"].includes(e.id));
 
 const workspaceNav: NavEntry[] = [
   { id: "projects", label: "Projects", icon: IconProjects },
@@ -88,6 +91,7 @@ const viewTitle: Record<ViewType, string> = {
   collections: "Collections",
   databases: "Databases",
   telemetry: "Telemetry",
+  integrations: "Integrations",
   auth: "Authentication",
   audit: "Audit log",
   settings: "Settings",