Vite Release

[mayansharma]

PR Summary

Migrates Catalyst Core’s web runtime from the old webpack/@tata1mg/router stack to a Vite-first SSR pipeline, with updated routing, split rendering, asset extraction, template support, and test coverage.

Core Runtime

• Replaces webpack SSR/client build flow with Vite server/client builds.
• Adds Vite configs for shared, client, and server builds.
• Adds a custom Node ESM loader for aliases, extension resolution, JSX, CJS interop, and legacy require() compatibility.
• Moves Catalyst entrypoint to index.jsx and re-exports React Router plus Catalyst web-router helpers.
• Removes old webpack Babel configs, remove-client/remove-ssr plugins, and legacy webpack server startup paths.
• Adds preServerInit to preload app config/hooks before Express starts.

SSR, Routing, And Data

• Adds Catalyst-owned web-router layer: RouterDataProvider, MetaTag, route data fetching, metadata merging, router context, and typed declarations.
• Updates ClientRouter and ServerRouter to use the new prepared route structure.
• Fixes production route matching to use req.originalUrl.
• Adds optional store fallback so apps without Redux store files still run.
• Moves renderer files to JSX and splits document rendering into Head, Body, render, and handler.

Vite Split And Asset Pipeline

• Adds split() and hydrationReady() as the Vite replacement for @loadable/component.
• Adds SplitInview for visibility-gated loading and per-instance fallback support.
• Adds cache-key injection for split() calls.
• Adds categorized asset manifest generation for ssrTrue, ssrFalse, essential, and orphan chunks.
• Adds chunk extraction for critical/deferred JS and CSS.
• Preloads critical assets, inlines critical CSS, and scopes deferred asset caching by route.
• Fixes split statics propagation so serverFetcher, clientFetcher, and setMetaData remain available after lazy loading.
• Fixes production static serving for Vite assets under PUBLIC_STATIC_ASSET_PATH/client/assets.

Server Runtime

• Reworks Express server startup for Vite SSR.
• Preloads production render module once at startup.
• Adds build manifest cache so manifests are read once instead of per request.
• Adds CJS bridge helper for ESM server files.
• Supports custom Vite config loading.
• Adds serve:inspect.
• Improves env loading and client env define handling.

Templates And Fixture App

• Updates create-catalyst-app templates to import router/runtime APIs from catalyst-core instead of @tata1mg/router.
• Removes @loadable/component from templates and switches client hydration to hydrationReady().
• Converts template and fixture server middleware files to ESM.
• Updates the Catalyst fixture app to use split() routes, native React Router index route shape, and Vite-compatible env reads.
• Syncs fixture catalyst-core package metadata and bin during test setup.

Observability, Bots, And Security

• Makes OpenTelemetry opt-in via OTEL_ENABLE.
• Adds response compression/flush spans and bot attribution.
• Adds bot detection middleware and AI crawler/StatusCake user-agent detection.
• Externalizes optional OTEL dependencies from SSR build.
• Includes npm audit/Semgrep-related dependency and security fixes.
• Includes Vite CVE fix.

Build And Release

• Updates Catalyst package scripts and dependency set for Vite, React, Sass, SVGR, and native build handling.
• Adds native Babel config and native package metadata support.
• Updates release metadata, changelog, lockfile, and MCP package dependency metadata.
• Updates scripts/test-catalyst-core.sh to replace built dist, bin, and package metadata in the fixture before running checks.

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