add xhs-images prompt

skills/gemini-web/SKILL.md

@@ -11,6 +11,7 @@ description: Interacts with Gemini Web to generate text and images. Use when the
 npx -y bun scripts/main.ts "Hello, Gemini"
 npx -y bun scripts/main.ts --prompt "Explain quantum computing"
 npx -y bun scripts/main.ts --prompt "A cute cat" --image cat.png
+npx -y bun scripts/main.ts --promptfiles system.md content.md --image out.png
 ```
 
 ## Commands
@@ -60,6 +61,7 @@ npx -y bun scripts/main.ts "Hello" --json
 | Option | Short | Description |
 |--------|-------|-------------|
 | `--prompt <text>` | `-p` | Prompt text |
+| `--promptfiles <files...>` | | Read prompt from files (concatenated in order) |
 | `--model <id>` | `-m` | Model: gemini-3-pro (default), gemini-2.5-pro, gemini-2.5-flash |
 | `--image [path]` | | Generate image, save to path (default: generated.png) |
 | `--json` | | Output as JSON |
@@ -108,3 +110,9 @@ npx -y bun scripts/main.ts "A photorealistic image of a golden retriever puppy"
 ```bash
 npx -y bun scripts/main.ts "Hello" --json | jq '.text'
 ```
+
+### Generate image from prompt files
+```bash
+# Concatenate system.md + content.md as prompt
+npx -y bun scripts/main.ts --promptfiles system.md content.md --image output.png
+```

skills/gemini-web/scripts/main.ts

@@ -19,9 +19,11 @@ function printUsage(exitCode = 0): never {
   npx -y bun skills/gemini-web/scripts/main.ts --prompt "Hello"
   npx -y bun skills/gemini-web/scripts/main.ts "Hello"
   npx -y bun skills/gemini-web/scripts/main.ts --prompt "A cute cat" --image generated.png
+  npx -y bun skills/gemini-web/scripts/main.ts --promptfiles system.md content.md --image out.png
 
 Options:
   -p, --prompt <text>       Prompt text
+  --promptfiles <files...>  Read prompt from one or more files (concatenated in order)
   -m, --model <id>          gemini-3-pro | gemini-2.5-pro | gemini-2.5-flash (default: gemini-3-pro)
   --json                    Output JSON
   --image [path]            Generate an image and save it (default: ./generated.png)
@@ -51,8 +53,22 @@ async function readPromptFromStdin(): Promise<string | null> {
   return text ? text : null;
 }
 
+function readPromptFiles(filePaths: string[]): string {
+  const contents: string[] = [];
+  for (const filePath of filePaths) {
+    const resolved = path.isAbsolute(filePath) ? filePath : path.resolve(process.cwd(), filePath);
+    if (!fs.existsSync(resolved)) {
+      throw new Error(`Prompt file not found: ${resolved}`);
+    }
+    const content = fs.readFileSync(resolved, 'utf8').trim();
+    contents.push(content);
+  }
+  return contents.join('\n\n');
+}
+
 function parseArgs(argv: string[]): {
   prompt?: string;
+  promptFiles?: string[];
   model?: string;
   json?: boolean;
   imagePath?: string;
@@ -101,6 +117,19 @@ function parseArgs(argv: string[]): {
       out.prompt = arg.slice('--prompt='.length);
       continue;
     }
+    if (arg === '--promptfiles') {
+      out.promptFiles = [];
+      while (i + 1 < argv.length) {
+        const next = argv[i + 1];
+        if (next && !next.startsWith('-')) {
+          out.promptFiles.push(next);
+          i += 1;
+        } else {
+          break;
+        }
+      }
+      continue;
+    }
     if (arg === '--model' || arg === '-m') {
       out.model = argv[i + 1] ?? '';
       i += 1;
@@ -148,6 +177,7 @@ function parseArgs(argv: string[]): {
   if (out.imagePath === '') delete out.imagePath;
   if (out.cookiePath === '') delete out.cookiePath;
   if (out.profileDir === '') delete out.profileDir;
+  if (out.promptFiles?.length === 0) delete out.promptFiles;
 
   return out;
 }
@@ -227,7 +257,8 @@ async function main(): Promise<void> {
   }
 
   const promptFromStdin = await readPromptFromStdin();
-  const prompt = args.prompt || promptFromStdin;
+  const promptFromFiles = args.promptFiles ? readPromptFiles(args.promptFiles) : null;
+  const prompt = promptFromFiles || args.prompt || promptFromStdin;
   if (!prompt) printUsage(1);
 
   let cookieMap = await ensureGeminiCookieMap({ cookiePath, profileDir });