fix(deps): require @tanstack/start-server-core ^1.169.8 for the /request-response subpath

[nandan-bhat]

Description

The server entry points import request and cookie helpers from @tanstack/start-server-core/request-response. This subpath was added in #39 to fix the Vite dependency-optimizer resolve failure in #38. The subpath is only exported by @tanstack/start-server-core version 1.169.8 and later. It is not present in 1.169.7 or earlier. But the dependency was still declared as ^1.0.0.

@tanstack/react-start pins a core version transitively, so a consumer on an older react-start can resolve a core below 1.169.8 that still satisfies ^1.0.0. The subpath import then fails at build or runtime.

Changes

• Bump @tanstack/start-server-core to ^1.169.8 in peerDependencies and devDependencies.
• Update the src/server/cookie-handler.ts import comment to say the subpath needs core 1.169.8 or later. It previously said the package was "always present", which ignores the version.
• Add @tanstack/start-server-core to the README peer-dependency table.

Testing

• Clean install: core 1.169.8 resolves @tanstack/start-server-core/request-response. Core 1.169.7 fails with ERR_PACKAGE_PATH_NOT_EXPORTED.
• npm run build, npm run lint, and npm test (311 tests) all pass.

References

• fix(server): import request and cookie helpers from @tanstack/start-server-core/request-response #39
• using @tanstack/start-server-core root imports causes build issues with vite dev server #38

[Piyush-85]

LGTM