fix: wrap command output in {% raw %} to prevent template interpretation

Command substitution output (!`cmd`) can contain {{ variable }} patterns
that LiquidJS would interpret as template variables, causing unexpected
prompts for missing variables. Wrapping in {% raw %}...{% endraw %}
prevents this.

Author: johnlindquist

src/__snapshots__/snapshot.test.ts.snap

@@ -85,8 +85,10 @@ Process these files accordingly."
 exports[`Snapshot Tests Command substitution executes and inlines command output 1`] = `
 "Current date context:
 
+
 Test command output
 
+
 Please proceed with the task."
 `;
 

src/imports.test.ts

@@ -71,13 +71,14 @@ test("expandImports throws on missing file", async () => {
 test("expandImports executes command inline", async () => {
   const content = "Output: !`echo hello`";
   const result = await expandImports(content, testDir);
-  expect(result).toBe("Output: hello");
+  // Command output is wrapped in {% raw %} to prevent LiquidJS template interpretation
+  expect(result).toBe("Output: {% raw %}\nhello\n{% endraw %}");
 });
 
 test("expandImports handles command with arguments", async () => {
   const content = "!`echo one two three`";
   const result = await expandImports(content, testDir);
-  expect(result).toBe("one two three");
+  expect(result).toBe("{% raw %}\none two three\n{% endraw %}")
 });
 
 test("expandImports handles multiple imports", async () => {
@@ -89,7 +90,7 @@ test("expandImports handles multiple imports", async () => {
 test("expandImports handles mixed file and command", async () => {
   const content = "File: @./simple.md Command: !`echo test`";
   const result = await expandImports(content, testDir);
-  expect(result).toBe("File: Hello from simple.md Command: test");
+  expect(result).toBe("File: Hello from simple.md Command: {% raw %}\ntest\n{% endraw %}");
 });
 
 test("expandImports preserves content without imports", async () => {

src/imports.ts

@@ -761,10 +761,19 @@ async function processCommandInline(
     const stderr = result.stderr.toString().trim();
 
     // Combine stdout and stderr (stderr first if both exist)
+    let output: string;
     if (stderr && stdout) {
-      return `${stderr}\n${stdout}`;
+      output = `${stderr}\n${stdout}`;
+    } else {
+      output = stdout || stderr || "";
     }
-    return stdout || stderr || "";
+
+    // Wrap in {% raw %}...{% endraw %} to prevent LiquidJS from interpreting
+    // any template-like syntax (e.g., {{ variable }}) in command output
+    if (output) {
+      return `{% raw %}\n${output}\n{% endraw %}`;
+    }
+    return output;
   } catch (err) {
     throw new Error(`Command failed: ${command} - ${(err as Error).message}`);
   }