🚅 Deployed to the rivet-pr-4168 environment in rivet-frontend

Service	Status	Web	Updated (UTC)
website	😴 Sleeping (View Logs)	Web	Feb 19, 2026 at 2:29 am
frontend-cloud	❌ Build Failed (View Logs)	Web	Feb 16, 2026 at 4:39 pm
frontend-inspector	❌ Build Failed (View Logs)	Web	Feb 16, 2026 at 4:39 pm
ladle	❌ Build Failed (View Logs)	Web	Feb 16, 2026 at 4:39 pm
mcp-hub	✅ Success (View Logs)	Web	Feb 10, 2026 at 9:04 pm

• feat: add xyflow #4170 : 2 dependent PRs (#4172 , #4211 )
• feat: add ladle #4168 👈 (View in Graphite)
• main

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Graphite Automations

PR Review: feat: add ladle

Summary

This PR adds Ladle as a component development environment for the frontend. The core additions are solid: a shared Vite config base, Ladle configuration, a Caddy server config, a Dockerfile, and Railway deployment config. Several issues need to be addressed before merging.

Blockers

1. Accidentally committed scripts/skill-evals/results/ files

The following files are unrelated to Ladle and appear to be accidentally committed agent evaluation artifacts:

• scripts/skill-evals/results/auth-flow/ (3 files)
• scripts/skill-evals/results/fill-form/ (3 files)
• scripts/skill-evals/results/js-counter/ (7 files, including raw agent.log)
• scripts/skill-evals/results/open-and-snapshot/ (3 files)
• scripts/skill-evals/results/react-counter/ (4 files)

These should be removed from this PR. If these results need to be committed, they belong in a separate PR. Consider adding scripts/skill-evals/results/ to .gitignore.

2. CMD removed from cloud.Dockerfile and inspector.Dockerfile

Both files had their final CMD ["caddy", "run", "--config", "/etc/caddy/Caddyfile"] line removed. The only remaining directive is ENTRYPOINT ["/docker-entrypoint.sh"]. If docker-entrypoint.sh passes $@ to caddy, containers will now start with no arguments. Please confirm that the entrypoint script hardcodes the caddy command and this removal is intentional.

Issues

3. @ladle/react placed in dependencies, not devDependencies

Ladle is a build/development tool and should be in devDependencies. The same applies to @xyflow/react if it was added solely for Ladle stories.

4. railway.cloud-staging.toml deleted without explanation

This file was removed with no mention in the PR description. Was cloud-staging intentionally retired? If so, please add a note. If not, this deletion is unintentional.

5. railway.ladle.toml has incomplete watchPatterns

The watch patterns only include /frontend/** and /pnpm-lock.yaml, but ladle.Dockerfile copies many additional directories that can change independently:

/engine/sdks/typescript/**
/rivetkit-typescript/packages/**
/shared/typescript/**
/examples/**

Changes to rivetkit or engine SDK code will not trigger a Railway rebuild. This matches the same issue in the existing cloud/inspector Railway configs; consider fixing all three.

6. Turbo build:ladle inputs are incomplete

The turbo.json entry for build:ladle does not list the Ladle-specific config files as inputs, so turbo will not invalidate the cache when they change:

 "build:ladle": {
     "dependsOn": ["^build"],
     "inputs": [
         "src/**",
         "tsconfig.json",
+        ".ladle/**",
+        "vite.base.config.ts",
         "package.json"
     ],

Similarly, build:cloud and build:inspector should include vite.base.config.ts in their inputs since they now depend on it via mergeConfig(baseViteConfig(), ...).

Minor / Suggestions

7. Placeholder story in workflow.stories.tsx

The only story exported is:

export const World = () => <div>World</div>;

This does not demonstrate the actual Workflow component. Either replace it with a real story or, if this is intentional scaffolding, add a comment explaining it is a placeholder pending component work.

8. frontend/.ladle/config.mjs has no story glob

The Ladle config only sets viteConfig. Adding an explicit stories glob makes discovery behavior predictable and avoids Ladle scanning the entire src/ tree:

export default {
  viteConfig: ".ladle/vite.config.ts",
  stories: "src/**/*.stories.{tsx,ts}",
};

9. ladle.Dockerfile copies frontend/public/examples/ twice

COPY frontend/ frontend/
COPY frontend/public/examples/ frontend/public/examples/  # redundant, already included above

The second COPY is a no-op since frontend/ is already copied in full. Remove the redundant line.

10. ladle.Dockerfile missing bash / entrypoint

The cloud and inspector Dockerfiles install bash and use a custom entrypoint script for runtime env-var substitution. The ladle Dockerfile skips this. Since Ladle is static and has no runtime env vars to substitute, this is likely fine, but a brief comment in the Dockerfile clarifying the intentional difference would help future readers.

What Looks Good

• The extraction of shared Vite config into vite.base.config.ts reduces duplication correctly and uses mergeConfig properly.
• Caddy config (Caddyfile.ladle) has correct security headers, gzip compression, aggressive caching for static assets, and SPA catch-all routing.
• Docker layer ordering is good: workspace files first, then package sources, then install, then build.
• The pnpm cache mount IDs are unique per Dockerfile, which is correct.

pnpm add https://pkg.pr.new/rivet-dev/rivet/@rivetkit/cloudflare-workers@4168

pnpm add https://pkg.pr.new/rivet-dev/rivet/@rivetkit/framework-base@4168

pnpm add https://pkg.pr.new/rivet-dev/rivet/@rivetkit/next-js@4168

pnpm add https://pkg.pr.new/rivet-dev/rivet/@rivetkit/react@4168

pnpm add https://pkg.pr.new/rivet-dev/rivet/rivetkit@4168

pnpm add https://pkg.pr.new/rivet-dev/rivet/@rivetkit/sql-loader@4168

pnpm add https://pkg.pr.new/rivet-dev/rivet/@rivetkit/sqlite-vfs@4168

pnpm add https://pkg.pr.new/rivet-dev/rivet/@rivetkit/traces@4168

pnpm add https://pkg.pr.new/rivet-dev/rivet/@rivetkit/workflow-engine@4168

pnpm add https://pkg.pr.new/rivet-dev/rivet/@rivetkit/virtual-websocket@4168

pnpm add https://pkg.pr.new/rivet-dev/rivet/@rivetkit/engine-runner@4168

pnpm add https://pkg.pr.new/rivet-dev/rivet/@rivetkit/engine-runner-protocol@4168

commit: 21d269f

Merge activity

• Feb 19, 11:17 PM UTC: NathanFlurry added this pull request to the Graphite merge queue.
• Feb 19, 11:18 PM UTC: CI is running for this pull request on a draft pull request (#4244) due to your merge queue CI optimization settings.
• Feb 19, 11:19 PM UTC: Merged by the Graphite merge queue via draft PR: #4244.