feat(coding-agent): add --no-context-files flag

closes #3253

packages/coding-agent/src/cli/args.ts

@@ -39,6 +39,7 @@ export interface Args {
 	noPromptTemplates?: boolean;
 	themes?: string[];
 	noThemes?: boolean;
+	noContextFiles?: boolean;
 	listModels?: string | true;
 	offline?: boolean;
 	verbose?: boolean;
@@ -150,6 +151,8 @@ export function parseArgs(args: string[]): Args {
 			result.noPromptTemplates = true;
 		} else if (arg === "--no-themes") {
 			result.noThemes = true;
+		} else if (arg === "--no-context-files" || arg === "-nc") {
+			result.noContextFiles = true;
 		} else if (arg === "--list-models") {
 			// Check if next arg is a search pattern (not a flag or file arg)
 			if (i + 1 < args.length && !args[i + 1].startsWith("-") && !args[i + 1].startsWith("@")) {
@@ -240,6 +243,7 @@ ${chalk.bold("Options:")}
   --no-prompt-templates, -np     Disable prompt template discovery and loading
   --theme <path>                 Load a theme file or directory (can be used multiple times)
   --no-themes                    Disable theme discovery and loading
+  --no-context-files, -nc        Disable AGENTS.md and CLAUDE.md discovery and loading
   --export <file>                Export session file to HTML and exit
   --list-models [search]         List available models (with optional fuzzy search)
   --verbose                      Force verbose startup (overrides quietStartup setting)

packages/coding-agent/src/core/resource-loader.ts

@@ -126,6 +126,7 @@ export interface DefaultResourceLoaderOptions {
 	noSkills?: boolean;
 	noPromptTemplates?: boolean;
 	noThemes?: boolean;
+	noContextFiles?: boolean;
 	systemPrompt?: string;
 	appendSystemPrompt?: string[];
 	extensionsOverride?: (base: LoadExtensionsResult) => LoadExtensionsResult;
@@ -163,6 +164,7 @@ export class DefaultResourceLoader implements ResourceLoader {
 	private noSkills: boolean;
 	private noPromptTemplates: boolean;
 	private noThemes: boolean;
+	private noContextFiles: boolean;
 	private systemPromptSource?: string;
 	private appendSystemPromptSource?: string[];
 	private extensionsOverride?: (base: LoadExtensionsResult) => LoadExtensionsResult;
@@ -220,6 +222,7 @@ export class DefaultResourceLoader implements ResourceLoader {
 		this.noSkills = options.noSkills ?? false;
 		this.noPromptTemplates = options.noPromptTemplates ?? false;
 		this.noThemes = options.noThemes ?? false;
+		this.noContextFiles = options.noContextFiles ?? false;
 		this.systemPromptSource = options.systemPrompt;
 		this.appendSystemPromptSource = options.appendSystemPrompt;
 		this.extensionsOverride = options.extensionsOverride;
@@ -448,7 +451,9 @@ export class DefaultResourceLoader implements ResourceLoader {
 			}
 		}
 
-		const agentsFiles = { agentsFiles: loadProjectContextFiles({ cwd: this.cwd, agentDir: this.agentDir }) };
+		const agentsFiles = {
+			agentsFiles: this.noContextFiles ? [] : loadProjectContextFiles({ cwd: this.cwd, agentDir: this.agentDir }),
+		};
 		const resolvedAgentsFiles = this.agentsFilesOverride ? this.agentsFilesOverride(agentsFiles) : agentsFiles;
 		this.agentsFiles = resolvedAgentsFiles.agentsFiles;
 

packages/coding-agent/src/main.ts

@@ -538,6 +538,7 @@ export async function main(args: string[], options?: MainOptions) {
 				noSkills: parsed.noSkills,
 				noPromptTemplates: parsed.noPromptTemplates,
 				noThemes: parsed.noThemes,
+				noContextFiles: parsed.noContextFiles,
 				systemPrompt: parsed.systemPrompt,
 				appendSystemPrompt: parsed.appendSystemPrompt,
 				extensionFactories: options?.extensionFactories,