Use the webview-ui linter during npm run lint (RooCodeInc#3938)

The webview-ui has an existing eslint config, but it was not being run as part of `npm run lint` command. Start running the webview specific linter (the top level linter doesn't run on tsx files, and webview linter has react specific checks).
Fix lint errors in slash-commands file.

Author: sjf

package.json

@@ -279,7 +279,7 @@
 		"watch-tests": "tsc -p . -w --outDir out",
 		"pretest": "npm run compile-tests && npm run compile && npm run compile-standalone && npm run lint",
 		"check-types": "npm run protos && tsc --noEmit",
-		"lint": "eslint src --ext ts && eslint webview-ui/src --ext ts",
+		"lint": "eslint src --ext ts && eslint webview-ui/src --ext ts && cd webview-ui && npm run lint",
 		"format": "prettier . --check",
 		"format:fix": "prettier . --write",
 		"test": "npm-run-all test:unit test:integration",

webview-ui/src/utils/slash-commands.ts

@@ -75,9 +75,9 @@ export function getWorkflowCommands(
 
 // Regex for detecting slash commands in text
 // currently doesn't allow whitespace inside of the filename
-export const slashCommandRegex = /\/([a-zA-Z0-9_\.-]+)(\s|$)/
+export const slashCommandRegex = /\/([a-zA-Z0-9_.-]+)(\s|$)/
 export const slashCommandRegexGlobal = new RegExp(slashCommandRegex.source, "g")
-export const slashCommandDeleteRegex = /^\s*\/([a-zA-Z0-9_\.-]+)$/
+export const slashCommandDeleteRegex = /^\s*\/([a-zA-Z0-9_.-]+)$/
 
 /**
  * Removes a slash command at the cursor position