✨ feat(lsp_server): implement missing providers and json coverage

Implement workspace configuration/folders and apply WorkspaceEdit.changes.

Strengthen provider JSON coverage (all methods require params, no errors).

Verified: Release test_provider

vscode/src/extension.ts

@@ -3,7 +3,7 @@ import * as vscode from 'vscode'
 import * as fs from 'fs'
 import { LanguageClient, LanguageClientOptions, ServerOptions, TransportKind } from 'vscode-languageclient/node'
 
-let client: LanguageClient
+let client: LanguageClient | undefined
 
 function findInSystemPath(binary: string): string | null {
     const pathDirs = process.env.PATH?.split(path.delimiter) || []
@@ -37,6 +37,48 @@ export function activate(context: vscode.ExtensionContext) {
     const config = vscode.workspace.getConfiguration('tsl')
     let serverArguments = config.get<string[]>('server.arguments') || []
 
+    context.subscriptions.push(
+        vscode.commands.registerCommand('tsl.showReferences', async (data?: any) => {
+            if (!data || typeof data !== 'object') {
+                vscode.window.showErrorMessage('TSL: invalid reference payload')
+                return
+            }
+
+            const uriValue = (data as any).uri
+            const positionValue = (data as any).position
+            if (typeof uriValue !== 'string' || !positionValue || typeof positionValue !== 'object') {
+                vscode.window.showErrorMessage('TSL: missing uri/position in reference payload')
+                return
+            }
+
+            const line = (positionValue as any).line
+            const character = (positionValue as any).character
+            if (typeof line !== 'number' || typeof character !== 'number') {
+                vscode.window.showErrorMessage('TSL: invalid position in reference payload')
+                return
+            }
+
+            if (client && !client.isRunning()) {
+                await client.start()
+            }
+
+            const uri = vscode.Uri.parse(uriValue)
+            const position = new vscode.Position(line, character)
+            const locations = await vscode.commands.executeCommand<vscode.Location[]>(
+                'vscode.executeReferenceProvider',
+                uri,
+                position
+            )
+
+            if (!locations || locations.length === 0) {
+                vscode.window.showInformationMessage('TSL: no references found')
+                return
+            }
+
+            await vscode.commands.executeCommand('editor.action.showReferences', uri, position, locations)
+        })
+    )
+
     const serverBinary = process.platform === 'win32' ? 'tsl-server.exe' : 'tsl-server'
     let serverExe = findExecutable(
         context,
@@ -86,7 +128,10 @@ export function activate(context: vscode.ExtensionContext) {
     const clientOptions: LanguageClientOptions = {
         documentSelector: [{ scheme: 'file', language: 'tsl' }],
         synchronize: {
-            fileEvents: vscode.workspace.createFileSystemWatcher('**/*.tsl')
+            fileEvents: [
+                vscode.workspace.createFileSystemWatcher('**/*.tsl'),
+                vscode.workspace.createFileSystemWatcher('**/*.tsf')
+            ]
         }
     }