chore: clean up default env value references across the code to be consistent.

scripts/init.js

@@ -895,12 +895,12 @@ function setupMCPConfiguration(targetDir, projectName) {
 			command: 'npx',
 			args: ['-y', 'task-master-mcp'],
 			env: {
-				ANTHROPIC_API_KEY: '%ANTHROPIC_API_KEY%',
-				PERPLEXITY_API_KEY: '%PERPLEXITY_API_KEY%',
+				ANTHROPIC_API_KEY: 'YOUR_ANTHROPIC_API_KEY',
+				PERPLEXITY_API_KEY: 'YOUR_PERPLEXITY_API_KEY',
 				MODEL: 'claude-3-7-sonnet-20250219',
 				PERPLEXITY_MODEL: 'sonar-pro',
 				MAX_TOKENS: 64000,
-				TEMPERATURE: 0.3,
+				TEMPERATURE: 0.2,
 				DEFAULT_SUBTASKS: 5,
 				DEFAULT_PRIORITY: 'medium'
 			}