Show coverage info button above harnesses unconditionally

The option to toggle this button on/off in settings didn't work, and I think it's better to just show it to people without hiding it in settings.
As long as we print the message that it's unstable (which we do), then there's no risk.

Author: Carolyn Zech

package.json

@@ -70,11 +70,6 @@
           "type": "boolean",
           "default": true
         },
-        "codelens-kani.highlightCoverage": {
-          "type": "boolean",
-          "default": false,
-          "description": "Controls the visibility of the `generate coverage` button by default."
-        },
         "Kani.showOutputWindow": {
           "type": "boolean",
           "default": false,

src/ui/CodeLensProvider.ts

@@ -78,40 +78,36 @@ export class CodelensProvider implements vscode.CodeLensProvider {
 				}
 			}
 
-			// The setting for the coverage code lens needs to be switched on for the mechanism
-			// to be enabled
-			if (vscode.workspace.getConfiguration('codelens-kani').get('highlightCoverage', true)) {
-				// Retrieve harness metadata from the tree-sitter which will be used to place the
-				// `Get coverage info` code lens button.
-				const kani_harnesses = await SourceCodeParser.getAttributeFromRustFile(text);
-
-				for (const harness of kani_harnesses) {
-					const harness_name = harness.harnessName;
-
-					// If the harness is empty or undefined, skip to the next iteration
-					if (harness_name === undefined || harness_name === '') {
-						continue;
-					}
-
-					const startPosition = harness.endPosition;
-
-					// This is the metadata that VSCode needs to place the codelens button
-					const line = document.lineAt(startPosition.row);
-					const indexOf = line.text.indexOf(harness_name);
-					const position = new vscode.Position(line.lineNumber, indexOf);
-					const range = document.getWordRangeAtPosition(position);
-
-					const codeCoverageAction = {
-						title: '$(play) Get coverage info',
-						tooltip: 'Highlight code with coverage information generated by Kani',
-						command: 'codelens-kani.highlightCoverage',
-						arguments: [harness_name],
-					};
-
-					if (range) {
-						const codeCoverageCodelens = new vscode.CodeLens(range, codeCoverageAction);
-						this.codeLenses.push(codeCoverageCodelens);
-					}
+			// Retrieve harness metadata from the tree-sitter which will be used to place the
+			// `Get coverage info` code lens button.
+			const kani_harnesses = await SourceCodeParser.getAttributeFromRustFile(text);
+
+			for (const harness of kani_harnesses) {
+				const harness_name = harness.harnessName;
+
+				// If the harness is empty or undefined, skip to the next iteration
+				if (harness_name === undefined || harness_name === '') {
+					continue;
+				}
+
+				const startPosition = harness.endPosition;
+
+				// This is the metadata that VSCode needs to place the codelens button
+				const line = document.lineAt(startPosition.row);
+				const indexOf = line.text.indexOf(harness_name);
+				const position = new vscode.Position(line.lineNumber, indexOf);
+				const range = document.getWordRangeAtPosition(position);
+
+				const codeCoverageAction = {
+					title: '$(play) Get coverage info',
+					tooltip: 'Highlight code with coverage information generated by Kani',
+					command: 'codelens-kani.highlightCoverage',
+					arguments: [harness_name],
+				};
+
+				if (range) {
+					const codeCoverageCodelens = new vscode.CodeLens(range, codeCoverageAction);
+					this.codeLenses.push(codeCoverageCodelens);
 				}
 			}
 			return this.codeLenses;

src/ui/coverage/coverageInfo.ts

@@ -32,7 +32,7 @@ enum CoverageStatus {
 	None = 'NONE',
 }
 
-const warningMessage = `Line coverage is an unstable feature.`;
+const warningMessage = `Source-based coverage is an unstable feature.`;
 
 // Callback function for the coverage code lens action
 export async function runCodeCoverageAction(