feat: remove provider namespace scanning support

sdk/dapp-sdk/README.md

@@ -7,7 +7,7 @@
 
 ## Features
 
-- **Wallet Discovery** — Remote gateways, `window.*` namespace scanning, EIP-6963-style `canton:announceProvider` events, and pluggable adapters
+- **Wallet Discovery** — Remote gateways, EIP-6963-style `canton:announceProvider` events, and pluggable adapters
 - **Wallet Picker UI** — Built-in, framework-agnostic Web Component that lets users choose a wallet, enter custom gateway URLs, and manage recently used connections
 - **Wallet Connectivity** — Connect, disconnect, and monitor connection status
 - **Account Management** — List accounts and respond to account changes
@@ -74,22 +74,22 @@ The SDK is built around three layers:
 ┌──────────────────────────────────────────────┐
 │  DappClient                                  │
 │  Thin wrapper: typed RPC helpers, events,    │
-│  window.canton injection, session persist    │
+│  session persist                             │
 ├──────────────────────────────────────────────┤
 │  DiscoveryClient                             │
 │  Adapter registry, session restore,          │
 │  wallet picker integration                   │
 ├──────────────────────────────────────────────┤
 │  ProviderAdapter implementations             │
-│  ExtensionAdapter, InjectedAdapter           │
-│  (browser / postMessage, window.* inject)    │
+│  ExtensionAdapter (announce protocol)        │
+│  (browser / postMessage)                     │
 │  RemoteAdapter (HTTP/SSE gateway)            │
 └──────────────────────────────────────────────┘
 ```
 
 ## Wallet providers
 
-Wallet and extension authors: see **[Wallet providers (discovery)](https://github.com/canton-network/wallet-gateway/blob/main/docs/dapp-building/dapp-sdk/provider.md)** in the dApp Building docs for how to appear in the picker (`RemoteAdapter`, `window.*` scan, `canton:announceProvider`, and `additionalAdapters`).
+Wallet and extension authors: see **[Wallet providers (discovery)](https://github.com/canton-network/wallet-gateway/blob/main/docs/dapp-building/dapp-sdk/provider.md)** in the dApp Building docs for how to appear in the picker (`RemoteAdapter`, `canton:announceProvider`, and `additionalAdapters`).
 
 ## Usage
 
@@ -163,23 +163,6 @@ const client = new DappClient(provider)
 const result = await client.connect()
 ```
 
-### Provider API
-
-The SDK also exposes a CIP-103 provider on `window.canton` (injected by default when a `DappClient` is created):
-
-```typescript
-const provider = window.canton
-
-const result = await provider.request({ method: 'connect' })
-const accounts = await provider.request({ method: 'listAccounts' })
-
-provider.on('statusChanged', (event) => {
-    console.log('Status:', event.connection.isConnected)
-})
-
-provider.removeListener('statusChanged', listener)
-```
-
 ## API Reference
 
 ### DappClient
@@ -203,7 +186,6 @@ provider.removeListener('statusChanged', listener)
 
 | Option         | Type           | Default    | Description                                                               |
 | -------------- | -------------- | ---------- | ------------------------------------------------------------------------- |
-| `injectGlobal` | `boolean`      | `true`     | Inject the provider into `window.canton`                                  |
 | `providerType` | `ProviderType` | `'remote'` | Affects `open()` routing (`'browser'` uses postMessage, others use popup) |
 
 ### DiscoveryClient
@@ -221,11 +203,10 @@ provider.removeListener('statusChanged', listener)
 
 ### Built-in Adapters
 
-| Adapter            | Provider Type | Transport        | Description                                                                                                                                                                              |
-| ------------------ | ------------- | ---------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
-| `ExtensionAdapter` | `'browser'`   | `postMessage`    | Browser extensions (announced wallets or dApp-registered; optional explicit slot).                                                                                                       |
-| `InjectedAdapter`  | `'browser'`   | in-page `window` | Created when namespace scan finds a provider on `window` ([Wallet providers guide](https://github.com/canton-network/wallet-gateway/blob/main/docs/dapp-building/dapp-sdk/provider.md)). |
-| `RemoteAdapter`    | `'remote'`    | HTTP/SSE         | CIP-103 Wallet Gateways over the network.                                                                                                                                                |
+| Adapter            | Provider Type | Transport     | Description                                                                                                                                                                                 |
+| ------------------ | ------------- | ------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| `ExtensionAdapter` | `'browser'`   | `postMessage` | Browser extensions discovered via `canton:announceProvider` ([Wallet providers guide](https://github.com/canton-network/wallet-gateway/blob/main/docs/dapp-building/dapp-sdk/provider.md)). |
+| `RemoteAdapter`    | `'remote'`    | HTTP/SSE      | CIP-103 Wallet Gateways over the network.                                                                                                                                                   |
 
 ## Documentation
 

sdk/dapp-sdk/src/adapter/index.ts

@@ -5,7 +5,6 @@ export * from './types'
 export * from './errors'
 export * from './events'
 export { ExtensionAdapter } from './extension-adapter'
-export { InjectedAdapter } from './injected-adapter'
 export { RemoteAdapter } from './remote-adapter'
 export type { RemoteAdapterConfig } from './remote-adapter'
 export { WalletConnectAdapter } from './walletconnect-adapter'

sdk/dapp-sdk/src/client.ts

@@ -5,7 +5,6 @@ import type {
     Provider,
     EventListener,
 } from '@canton-network/core-splice-provider'
-import { injectProvider } from '@canton-network/core-provider-dapp'
 import { WalletEvent, type SpliceMessage } from '@canton-network/core-types'
 import type {
     AccountsChangedEvent,
@@ -27,8 +26,6 @@ import { popup } from '@canton-network/core-wallet-ui-components'
 import { clearAllLocalState } from './util'
 
 export interface DappClientOptions {
-    /** Inject provider into `window.canton`. Defaults to true. */
-    injectGlobal?: boolean | undefined
     /** Provider type hint — affects `open()` routing. Defaults to `'remote'`. */
     providerType?: ProviderType | undefined
     /** Optional routing key for extension open messages. */
@@ -40,7 +37,7 @@ export interface DappClientOptions {
  * `Provider<DappRpcTypes>`.
  *
  * It exposes typed RPC helpers, event subscription shortcuts,
- * `window.canton` injection, and session-persistence listeners.
+ * and session-persistence listeners.
  *
  * How to obtain a provider is **not** this class's concern.
  * Use `DiscoveryClient` + the wallet picker, or construct any
@@ -56,10 +53,6 @@ export class DappClient {
     ) {
         this.provider = provider
         this.options = options
-
-        if (options.injectGlobal !== false) {
-            injectProvider(provider)
-        }
     }
 
     // ── Provider access ───────────────────────────────────

sdk/dapp-sdk/src/index.ts

@@ -1,7 +1,7 @@
 // Copyright (c) 2025-2026 Digital Asset (Switzerland) GmbH and/or its affiliates. All rights reserved.
 // SPDX-License-Identifier: Apache-2.0
 
-// Import global Window augmentation for the DappProvider injection
+// Import global Window augmentation for `window.canton`
 import '@canton-network/core-provider-dapp'
 
 // ── Asset exports (icons for wallet adapters) ──

sdk/dapp-sdk/src/sdk.ts

@@ -43,7 +43,6 @@ import type {
 } from '@canton-network/core-wallet-dapp-rpc-client'
 import { DappClient } from './client'
 import { ExtensionAdapter } from './adapter/extension-adapter'
-import { InjectedAdapter } from './adapter/injected-adapter'
 import {
     RemoteAdapter,
     type RemoteAdapterConfig,
@@ -52,7 +51,6 @@ import * as storage from './storage'
 import { clearAllLocalState } from './util'
 import defaultGatewayList from './gateways.json'
 import { CANTON_LOGO_PNG } from './assets'
-import { discoverInjectedProviders } from './injected-discovery'
 import { requestAnnouncedProviders } from './announce-discovery'
 
 export interface DappSDKConnectOptions<
@@ -107,30 +105,6 @@ export class DappSDK {
         }
     }
 
-    private async registerInjectedNamespaceAdapters(
-        discovery: DiscoveryClient
-    ): Promise<void> {
-        const existingIds = new Set(
-            discovery.listAdapters().map((a) => a.providerId as string)
-        )
-
-        const injected = discoverInjectedProviders()
-        for (const item of injected) {
-            const id = `browser:${item.id}`
-            if (existingIds.has(id)) continue
-
-            const key = `${item.id} (injected)`
-            const adapter = new InjectedAdapter({
-                id: item.id,
-                name: key,
-                provider: item.provider,
-                description: `Injected provider from window.${item.id}`,
-            })
-            discovery.registerAdapter(adapter)
-            existingIds.add(id)
-        }
-    }
-
     private async registerAnnouncedAdapters(
         discovery: DiscoveryClient
     ): Promise<void> {
@@ -173,8 +147,7 @@ export class DappSDK {
             await this.registerAdapters(this.discovery, initAdapters)
         }
 
-        // These can appear after initial create() (injected providers, extensions).
-        await this.registerInjectedNamespaceAdapters(this.discovery)
+        // Extensions can announce after initial create().
         await this.registerAnnouncedAdapters(this.discovery)
 
         await this.discovery.restorePersistedSessionIfNeeded()
@@ -362,7 +335,6 @@ export class DappSDK {
         }
 
         const discovery = this.discovery!
-        await this.registerInjectedNamespaceAdapters(discovery)
         await this.registerAnnouncedAdapters(discovery)
 
         clearAllLocalState()