Lint with Oxlint through Vite+ instead of ESLint

Replace ESLint, typescript-eslint, eslint-plugin-node and the flat
config helpers with vite-plus, which runs Oxlint for vp lint. The rules
are carried over from eslint.config.mjs by @oxlint/migrate into the lint
section of the root vite.config.ts. The formatting rules ESLint
deprecated run as @stylistic rules through Oxlint's JS plugin support,
and disable comments naming them are updated to the @stylistic names.

@stylistic understands TypeScript syntax that the core rules skipped,
so the autofix adds missing semicolons and spaces in type literals and
aliases. Leading | and & in multiline types stay where they were.

Oxlint's node/no-sync also reports identifiers ending in Sync that are
not calls. The test helper techSync is renamed and the two other names
are ignored.

Refs #1127

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

packages/controller/src/BaseControllerPlugin.ts

@@ -107,7 +107,7 @@ export class ControllerHooks extends lib.AsyncHookCollection {
 	 * @param curr - The current value of the field.
 	 * @param prev - The previous value of the field.
 	 */
-	// eslint-disable-next-line max-len
+	// eslint-disable-next-line @stylistic/max-len
 	readonly instanceConfigFieldChanged: lib.AsyncHook<[instance: InstanceRecord, field: string, curr: unknown, prev: unknown]>;
 
 	/**
@@ -165,7 +165,7 @@ export class ControllerHooks extends lib.AsyncHookCollection {
 	 *     The connection the event occured on.
 	 * @param event - one of connect, drop, resume and close
 	 */
-	// eslint-disable-next-line max-len
+	// eslint-disable-next-line @stylistic/max-len
 	readonly hostConnectionEvent: lib.AsyncHook<[connection: HostConnection, event: "connect" | "drop" | "resume" | "close"]>;
 
 	/**
@@ -202,7 +202,7 @@ export class ControllerHooks extends lib.AsyncHookCollection {
 	 *     The connection the event occured on.
 	 * @param event - one of connect, drop, resume, and close.
 	 */
-	// eslint-disable-next-line max-len
+	// eslint-disable-next-line @stylistic/max-len
 	readonly controlConnectionEvent: lib.AsyncHook<[connection: ControlConnection, event: "connect" | "drop" | "resume" | "close"]>;
 
 	/**

packages/controller/src/Controller.ts

@@ -52,7 +52,7 @@ type ControllerDebugEvents = {
 
 type ControllerEvents = {
 	"stop": [],
-}
+};
 
 /**
  * Manages all controller related operations

packages/controller/src/routes.ts

@@ -141,7 +141,7 @@ function getPlugins(req: Request, res: Response) {
 		// Note: Cast through unknown is needed because load_plugin is
 		// defined at runtime and no other fields in the controller config
 		// currently have the boolean type.
-		let web: { main:any, error:string|undefined } = { main: undefined, error: undefined};
+		let web: { main: any, error: string|undefined } = { main: undefined, error: undefined};
 		let devPlugins = req.app.locals.devPlugins;
 		if (devPlugins && devPlugins.has(name)) {
 			web.main = devPlugins.get(name);
@@ -305,7 +305,7 @@ type ProxyStreamEvents = {
 	"close": [],
 	"timeout": [],
 	"source": [],
-}
+};
 
 export interface ProxyStream {
 	id: string;