🤖 Use real mermaid in Storybook for visual inspection

Remove mermaid stub alias so diagrams render with actual mermaid.js.
This allows visual verification of the error handling fixes.

The stub is still updated with parse() method for test environments
that use VITE_DISABLE_MERMAID=1.

Generated with `cmux`

Author: ammar-agent

.storybook/main.ts

@@ -19,8 +19,6 @@ const config: StorybookConfig = {
       resolve: {
         alias: {
           "@": path.join(process.cwd(), "src"),
-          // Use mermaid stub for Storybook to avoid initialization issues
-          "mermaid": path.join(process.cwd(), "src/mocks/mermaidStub.ts"),
           // Note: VERSION mocking for stable visual testing is handled by overwriting
           // src/version.ts in the Chromatic CI workflow, not via alias here
         },