diff --git a/CLAUDE.md b/CLAUDE.md
index 8c5ef3d6..974093f5 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -45,7 +45,7 @@ dotnet run --project template/SimpleModule.Host     # runs on https://localhost:
 ```bash
 npm install                          # install all workspace dependencies
 npm run dev                          # start development (dotnet + all module watches, unminified JS)
-npm run dev:build                    # build all modules in dev mode (unminified, with source maps)
+npm run build:dev                    # build all modules in dev mode (unminified, with source maps)
 npm run build                        # production build (minified, optimized)
 npm run check                        # biome lint + format check
 npm run check:fix                    # auto-fix lint + formatting
@@ -146,7 +146,7 @@ See [docs/CONSTITUTION.md](docs/CONSTITUTION.md) for the authoritative reference
 - Module boundaries, dependencies, and data ownership
 - Communication patterns (contracts and events)
 - Endpoint, frontend, and authorization rules
-- Compiler-enforced diagnostics (SM0001-SM0054)
+- Compiler-enforced diagnostics (SM0001-SM0061)
 - Framework contributor guidelines
 
 ## Key Constraints
@@ -169,8 +169,8 @@ When you add a new `IViewEndpoint`, you **must** register it in your module's `P
 **Why:** The C# source generator discovers your new endpoint and validates it's properly decorated, but React needs a corresponding entry in the page registry. If you forget:
 
 - The endpoint compiles and runs fine on the server
-- Navigating to that page in React silently 404s client-side (no error in console, no error response shown to user)
-- The developer won't know for hours or until QA finds it
+- Navigating to that page throws a descriptive client-side error — the page resolver names the missing page and lists the available ones, the ClientApp shows an error toast, and the error is logged to the browser console
+- `npm run validate-pages` catches the mismatch at build time (and in CI) before it reaches the browser
 
 **Pattern:**
 
diff --git a/README.md b/README.md
index cf3724b4..7f6f5f79 100644
--- a/README.md
+++ b/README.md
@@ -55,26 +55,30 @@ This starts the .NET backend and Vite watchers for all modules and the ClientApp
 SimpleModule.AppHost           # .NET Aspire orchestration (app + PostgreSQL + pgAdmin)
 SimpleModule.ServiceDefaults   # Aspire service defaults (OpenTelemetry, health checks)
 framework/
-  SimpleModule.Core            # IModule, IEndpoint, IViewEndpoint, [Dto], [Module], IEventBus
+  SimpleModule.Core            # IModule, IEndpoint, IViewEndpoint, [Dto], [Module], events, menus
   SimpleModule.Generator       # Roslyn IIncrementalGenerator (netstandard2.0)
   SimpleModule.Database        # Multi-provider DB (SQLite, PostgreSQL, SQL Server)
   SimpleModule.Hosting         # ASP.NET host builder extensions, Inertia page rendering
-  SimpleModule.DevTools        # Developer tooling and diagnostics
-  SimpleModule.Storage         # File storage abstraction with Local, Azure Blob, and S3 providers
+  SimpleModule.Storage(.Local/.Azure/.S3)  # File storage abstraction + provider implementations
+  SimpleModule.Testing         # Shared testing utilities for module test projects
 modules/
-  Admin, Agents, AuditLogs, BackgroundJobs, Dashboard, Email,
-  FeatureFlags, FileStorage, Localization, Marketplace, Orders,
-  PageBuilder, Products, Rag, RateLimiting, Settings, Tenants, Users
+  Admin, AuditLogs, BackgroundJobs, Dashboard, Email, FeatureFlags,
+  FileStorage, Identity, Keycloak, Localization, Notifications,
+  RateLimiting, Settings, Tenants, Users
   OpenIddict                   # OpenID Connect / OAuth 2.0 via OpenIddict
   Permissions                  # RBAC and access control
 packages/
   SimpleModule.Client          # Vite plugin + page resolution for module frontends
   SimpleModule.UI              # Radix UI component library with Tailwind
   SimpleModule.Theme.Default   # Tailwind CSS base theme
+  SimpleModule.Echo            # Real-time client for the broadcasting hub (wraps SignalR)
+  SimpleModule.TsConfig        # Shared TypeScript configuration
 template/
   SimpleModule.Host            # Host app (net10.0) — wires modules via generated code
 cli/
   SimpleModule.Cli             # `sm` CLI tool for scaffolding and validation
+tools/
+  SimpleModule.DevTools        # Developer tooling and diagnostics
 tests/                         # Framework tests, shared test infrastructure, and e2e tests
 scripts/                       # Build/dev orchestrators, type extraction, component scaffolding
 ```
@@ -83,9 +87,9 @@ scripts/                       # Build/dev orchestrators, type extraction, compo
 
 ```
 Browser request
-  → ASP.NET route handler calls Inertia.Render("Products/Browse", { products })
+  → ASP.NET route handler calls Inertia.Render("Tenants/Browse", { tenants })
   → Inertia middleware renders static HTML shell with JSON props
-  → Client loads React, dynamically imports module's Products.pages.js bundle
+  → Client loads React, dynamically imports module's Tenants.pages.js bundle
   → React component hydrates with server-provided props
 ```
 
@@ -93,31 +97,31 @@ Subsequent navigations are XHR — Inertia fetches JSON props and swaps the Reac
 
 ### Module Anatomy
 
-Each module follows the same structure. Using Products as an example:
+Each module follows the same structure. Using the Tenants module as an example:
 
 ```
-modules/Products/
+modules/Tenants/
   src/
-    Products.Contracts/        # Public interface + DTOs (what other modules depend on)
-      IProductContracts.cs     # Service interface
-      Product.cs               # [Dto] — generates TypeScript types
-      ProductId.cs             # Strongly-typed ID
-      CreateProductRequest.cs  # Request DTO
-    Products/                  # Implementation (never referenced by other modules)
-      ProductsModule.cs        # [Module("Products")] + IModule — DI, menus, permissions
-      ProductsDbContext.cs     # Module-scoped EF Core context
-      ProductService.cs        # Implements IProductContracts
-      Endpoints/Products/      # IEndpoint classes (auto-discovered, auto-mapped)
-      Views/                   # React .tsx pages
-      Pages/index.ts           # Page registry — maps route names to lazy component imports
+    SimpleModule.Tenants.Contracts/   # Public interface + DTOs (what other modules depend on)
+      ITenantContracts.cs             # Service interface
+      Tenant.cs                       # [Dto] — generates TypeScript types
+      TenantId.cs                     # Strongly-typed ID
+      CreateTenantRequest.cs          # Request DTO
+    SimpleModule.Tenants/             # Implementation (never referenced by other modules)
+      TenantsModule.cs                # [Module("Tenants")] + IModule — DI, menus, permissions
+      TenantsDbContext.cs             # Module-scoped EF Core context
+      TenantService.cs                # Implements ITenantContracts
+      Endpoints/Tenants/              # IEndpoint classes (auto-discovered, auto-mapped)
+      Pages/                          # IViewEndpoint classes + co-located React .tsx pages
+      Pages/index.ts                  # Page registry — maps route names to lazy component imports
   tests/
-    Products.Tests/            # xUnit tests for this module
+    SimpleModule.Tenants.Tests/       # xUnit tests for this module
 ```
 
 ### Module Communication
 
-- **Contracts** — Modules expose a `.Contracts` project with a public interface (e.g., `IProductContracts`) and `[Dto]` types. Other modules depend on contract interfaces, never on implementation projects.
-- **Event bus** — `IEventBus.PublishAsync<T>()` broadcasts to all `IEventHandler<T>` implementations. Handlers execute sequentially; failures are isolated and collected into an `AggregateException`.
+- **Contracts** — Modules expose a `.Contracts` project with a public interface (e.g., `ITenantContracts`) and `[Dto]` types. Other modules depend on contract interfaces, never on implementation projects.
+- **Event bus** — Modules publish domain events via Wolverine's `IMessageBus.PublishAsync<T>()`. Handlers are discovered by naming convention (a class ending in `Handler`/`Consumer` with a `Handle`/`Consume` method) and dispatched in-process through a durable inbox/outbox — no manual registration needed.
 
 ### Database
 
diff --git a/docs/CONSTITUTION.md b/docs/CONSTITUTION.md
index 7cdb3a7c..7ac9e632 100644
--- a/docs/CONSTITUTION.md
+++ b/docs/CONSTITUTION.md
@@ -50,7 +50,7 @@ All hooks are optional. All have default no-op implementations.
 7. **ConfigureFeatureFlags** -- register feature flag definitions
 8. **ConfigureAgents** -- register AI agent definitions
 9. **ConfigureRateLimits** -- register rate limit policies
-10. **ConfigureHost** -- configure host-level integrations (e.g., TickerQ, database initialization) after the host is built
+10. **ConfigureHost** -- configure host-level integrations (e.g., database initialization and schema creation) after the host is built
 11. **OnStartAsync** -- one-time initialization after all services are registered
 12. **OnStopAsync** -- graceful shutdown cleanup
 13. **CheckHealthAsync** -- report module health status (Healthy, Degraded, Unhealthy)
@@ -316,7 +316,7 @@ public sealed class CreateProductRequest : FormRequest<CreateProductRequest>
 
 - Every `IViewEndpoint` must have a matching entry in `Pages/index.ts`.
 - The key must match the component name passed to `Inertia.Render()`.
-- Missing entries cause silent client-side 404s with no error in the console.
+- Missing entries throw a descriptive client-side error (the resolver names the missing page and lists the available ones) and surface an error toast -- they do not fail silently.
 - Run `npm run validate-pages` to verify all endpoints have matching page entries.
 
 ### Dynamic Imports
diff --git a/docs/site/frontend/overview.md b/docs/site/frontend/overview.md
index 78d0fad3..56c0d6b0 100644
--- a/docs/site/frontend/overview.md
+++ b/docs/site/frontend/overview.md
@@ -25,7 +25,7 @@ Each module compiles its React pages into a single ES module bundle (`{ModuleNam
 | Technology | Version | Purpose |
 |---|---|---|
 | React | 19 | UI rendering |
-| Inertia.js | 2.x | SPA-like navigation without a client-side router |
+| Inertia.js | 3.x | SPA-like navigation without a client-side router |
 | Vite | 6.x | Build tooling and dev server |
 | Tailwind CSS | 4.x | Utility-first styling |
 | TypeScript | 5.8 | Type safety |
diff --git a/docs/site/getting-started/introduction.md b/docs/site/getting-started/introduction.md
index 8b2b2330..6851ecf0 100644
--- a/docs/site/getting-started/introduction.md
+++ b/docs/site/getting-started/introduction.md
@@ -188,7 +188,7 @@ You don't write registration code, startup configuration, or reflection-based di
 | Testing | xUnit.v3, FluentAssertions, Bogus, Playwright, BenchmarkDotNet, NBomber |
 | Database | SQLite, PostgreSQL, SQL Server via EF Core |
 | File storage | Local, AWS S3, Azure Blob Storage |
-| Job scheduling | TickerQ with CRON support |
+| Job scheduling | Database-backed queue with CRON (Cronos) support |
 | CLI | System.CommandLine |
 
 ## Next Steps
diff --git a/docs/site/getting-started/quick-start.md b/docs/site/getting-started/quick-start.md
index d6c0119b..a5a7c3cd 100644
--- a/docs/site/getting-started/quick-start.md
+++ b/docs/site/getting-started/quick-start.md
@@ -227,7 +227,7 @@ export const pages: Record<string, unknown> = {
 ```
 
 ::: danger Don't Forget the Page Registry
-Every `IViewEndpoint` that calls `Inertia.Render("Customers/Something", ...)` **must** have a matching entry in `Pages/index.ts`. If you forget, the endpoint works on the server but silently 404s on the client with no error message.
+Every `IViewEndpoint` that calls `Inertia.Render("Customers/Something", ...)` **must** have a matching entry in `Pages/index.ts`. If you forget, the endpoint works on the server but the client throws a descriptive error (and shows an error toast) instead of rendering the page.
 
 Run `npm run validate-pages` to catch mismatches.
 :::
@@ -285,7 +285,7 @@ This starts:
 - The SimpleModule host app on **http://localhost:8080**
 - A **PostgreSQL** instance for production-like database behavior
 
-::: tip Development vs Customerion Database
+::: tip Development vs Production Database
 During local development with `npm run dev`, the app uses SQLite by default -- no database server needed. Docker Compose switches to PostgreSQL to match production behavior.
 :::
 
@@ -294,8 +294,8 @@ During local development with `npm run dev`, the app uses SQLite by default -- n
 | Command                  | What it does                                    |
 | ------------------------ | ----------------------------------------------- |
 | `npm run dev`            | Start backend + all frontend watchers           |
-| `npm run build`          | Customerion build (minified, optimized)          |
-| `npm run dev:build`      | Dev build (unminified, source maps)             |
+| `npm run build`          | Production build (minified, optimized)          |
+| `npm run build:dev`      | Dev build (unminified, source maps)             |
 | `npm run check`          | Lint + format check (Biome)                     |
 | `npm run check:fix`      | Auto-fix lint + formatting                      |
 | `npm run validate-pages` | Verify all endpoints have page registry entries |
diff --git a/docs/site/guide/endpoints.md b/docs/site/guide/endpoints.md
index 47628222..e890895e 100644
--- a/docs/site/guide/endpoints.md
+++ b/docs/site/guide/endpoints.md
@@ -246,7 +246,7 @@ public class EditEndpoint : IViewEndpoint
 ```
 
 ::: warning
-When adding a new `IViewEndpoint`, you **must** also register the corresponding component in your module's `Pages/index.ts`. The Inertia component name in `Inertia.Render("Customers/Edit", ...)` must have a matching key in the pages record. If you forget, the page will silently 404 on the client side with no error.
+When adding a new `IViewEndpoint`, you **must** also register the corresponding component in your module's `Pages/index.ts`. The Inertia component name in `Inertia.Render("Customers/Edit", ...)` must have a matching key in the pages record. If you forget, the client throws a descriptive error (and shows an error toast) instead of rendering the page.
 
 Run `npm run validate-pages` to verify all endpoints have matching frontend entries.
 :::
diff --git a/docs/site/guide/inertia.md b/docs/site/guide/inertia.md
index d20039dc..8b715b5a 100644
--- a/docs/site/guide/inertia.md
+++ b/docs/site/guide/inertia.md
@@ -270,7 +270,7 @@ export const pages: Record<string, unknown> = {
 ```
 
 ::: danger Critical
-Every `IViewEndpoint` that calls `Inertia.Render("Module/Page", ...)` **must** have a matching entry in the module's `Pages/index.ts`. Missing entries silently fail with no error in the console. Run `npm run validate-pages` to catch mismatches.
+Every `IViewEndpoint` that calls `Inertia.Render("Module/Page", ...)` **must** have a matching entry in the module's `Pages/index.ts`. Missing entries throw a descriptive client-side error (the resolver lists the available pages) and surface an error toast — they do not fail silently. Run `npm run validate-pages` to catch mismatches at build time.
 :::
 
 ### Writing a Page Component
diff --git a/docs/site/guide/modules.md b/docs/site/guide/modules.md
index 3bce1fde..ebcfc3a4 100644
--- a/docs/site/guide/modules.md
+++ b/docs/site/guide/modules.md
@@ -44,8 +44,9 @@ public interface IModule
 | `ConfigurePermissions` | Define module-specific permissions for authorization |
 | `ConfigureSettings` | Register configurable settings for the module |
 | `ConfigureFeatureFlags` | Register feature flag definitions |
+| `ConfigureAgents` | Register AI agent definitions |
 | `ConfigureRateLimits` | Register rate limit policies |
-| `ConfigureHost` | Configure host-level integrations after the host is built (e.g., TickerQ, database initialization) |
+| `ConfigureHost` | Configure host-level integrations after the host is built (e.g., database initialization and schema creation) |
 | `OnStartAsync` | One-time async initialization after all services are registered |
 | `OnStopAsync` | Graceful shutdown cleanup |
 | `CheckHealthAsync` | Report per-module health status |
diff --git a/docs/site/reference/api.md b/docs/site/reference/api.md
index 32a384cb..31df720f 100644
--- a/docs/site/reference/api.md
+++ b/docs/site/reference/api.md
@@ -42,8 +42,9 @@ public interface IModule
 | `ConfigurePermissions` | Application startup | Register permission definitions |
 | `ConfigureSettings` | Application startup | Register settings definitions |
 | `ConfigureFeatureFlags` | Application startup | Register feature flag definitions |
+| `ConfigureAgents` | Application startup | Register AI agent definitions |
 | `ConfigureRateLimits` | Application startup | Register rate limit policies |
-| `ConfigureHost` | After host is built | Configure host-level integrations (TickerQ, DB init) |
+| `ConfigureHost` | After host is built | Configure host-level integrations (database init, schema creation) |
 | `OnStartAsync` | After services registered | One-time async initialization |
 | `OnStopAsync` | Graceful shutdown | Cleanup, flush buffers, drain work |
 | `CheckHealthAsync` | Health check endpoint | Report module health status |
diff --git a/framework/SimpleModule.Core/README.md b/framework/SimpleModule.Core/README.md
index e800f79a..14ab0bf7 100644
--- a/framework/SimpleModule.Core/README.md
+++ b/framework/SimpleModule.Core/README.md
@@ -28,7 +28,7 @@ public sealed class ProductsModule : IModule
 - **IModule** interface for defining self-contained modules
 - **IEndpoint** interface for auto-discovered Minimal API endpoints
 - **[Dto]** attribute for cross-module data transfer types with TypeScript generation
-- **IEventBus** for decoupled module-to-module communication
+- **Domain events** (`IEvent` / `DomainEvent`) dispatched in-process via Wolverine's `IMessageBus` for decoupled module-to-module communication
 - **IMenuRegistry** for dynamic navigation menu registration
 - **Inertia.js integration** for server-driven React page rendering