refactor: update remaining modules to use plugin-identity constants

Update various modules to use centralized constants from plugin-identity:
- get-local-version/formatter: Use PUBLISHED_PACKAGE_NAME
- run/session-resolver: Use PUBLISHED_PACKAGE_NAME
- background-agent/task-poller: Use PUBLISHED_PACKAGE_NAME
- mcp-oauth/provider: Use PUBLISHED_PACKAGE_NAME
- auto-update-checker/constants: Use ACCEPTED_PACKAGE_NAMES
- comment-checker/downloader: Use PUBLISHED_PACKAGE_NAME
- legacy-plugin-toast/hook: Use PLUGIN_NAME
- shared/data-path: Use CACHE_DIR_NAME
- shared/external-plugin-detector: Use ACCEPTED_PACKAGE_NAMES
- shared/logger: Use LOG_FILENAME
- tools/ast-grep/downloader: Use PUBLISHED_PACKAGE_NAME
- tools/call-omo-agent/tools: Use PUBLISHED_PACKAGE_NAME
- tools/delegate-task/category-resolver: Use PUBLISHED_PACKAGE_NAME
- tools/grep/constants: Use PUBLISHED_PACKAGE_NAME
- tools/grep/downloader: Use PUBLISHED_PACKAGE_NAME
- tools/lsp/lsp-client-wrapper: Use PUBLISHED_PACKAGE_NAME

🤖 Generated with assistance of OhMyOpenCode

src/features/mcp-oauth/provider.ts

@@ -1,5 +1,6 @@
 import type { OAuthTokenData } from "./storage"
 import { loadToken, saveToken } from "./storage"
+import { PLUGIN_NAME } from "../../shared/plugin-identity"
 import { discoverOAuthServerMetadata } from "./discovery"
 import type { OAuthServerMetadata } from "./discovery"
 import { getOrRegisterClient } from "./dcr"
@@ -141,7 +142,7 @@ export class McpOAuthProvider {
     const clientInfo = await getOrRegisterClient({
       registrationEndpoint: metadata.registrationEndpoint,
       serverIdentifier: this.serverUrl,
-      clientName: "oh-my-opencode",
+      clientName: PLUGIN_NAME,
       redirectUris: [this.redirectUrl()],
       tokenEndpointAuthMethod: "none",
       clientId: this.configClientId,