Clarify actionlint includes shellcheck and pyflakes in CLI output (#7656)

Author: Copilot

docs/src/content/docs/introduction/architecture.mdx

@@ -311,7 +311,7 @@ flowchart TB
     end
 
     subgraph Scanners["Security Scanners"]
-        ACTIONLINT["actionlint<br/>Workflow linting<br/>Shell script checks"]
+        ACTIONLINT["actionlint<br/>Workflow linting<br/>(includes shellcheck & pyflakes)"]
         ZIZMOR["zizmor<br/>Security vulnerabilities<br/>Privilege escalation"]
         POUTINE["poutine<br/>Supply chain risks<br/>Third-party actions"]
     end

pkg/cli/actionlint.go

@@ -105,7 +105,7 @@ func runActionlintOnFile(lockFile string, verbose bool, strict bool) error {
 	)
 
 	// Always show that actionlint is running (regular verbosity)
-	fmt.Fprintf(os.Stderr, "%s\n", console.FormatInfoMessage(fmt.Sprintf("Running actionlint on %s", relPath)))
+	fmt.Fprintf(os.Stderr, "%s\n", console.FormatInfoMessage(fmt.Sprintf("Running actionlint (includes shellcheck & pyflakes) on %s", relPath)))
 
 	// In verbose mode, also show the command that users can run directly
 	if verbose {