fix(core): skip interactive-auth registration when client auth is disabled

[antfubot]

Description

Disabling client auth (via devtools: { clientAuth: false } or VITE_DEVTOOLS_DISABLE_CLIENT_AUTH=true) no longer trusted the client's RPC session: createDevToolsContext unconditionally registered devframe's interactive-auth RPC functions (anonymous:devframe:auth and friends) on the context RPC host, regardless of whether auth would end up disabled. This preempted devframe's auth: false auto-trust shim in initHub, which only installs its noop auto-trust handler when anonymous:devframe:auth isn't already registered — so the real interactive handler always won that race, leaving isTrusted stuck at false and the client stuck on the authorization prompt.

This PR:

• Extracts the auth-disabled check into a shared isClientAuthDisabled(context) helper in auth-handler.ts.
• Uses it in createDevToolsContext to skip registering the interactive-auth RPC functions entirely when auth is disabled, so devframe's auto-trust shim can register anonymous:devframe:auth itself.
• Uses the same helper in createDevToolsHub (previously computed inline) so both call sites agree on when the gate is off.
• Adds regression tests covering build mode, devtools.clientAuth: false, and the VITE_DEVTOOLS_DISABLE_CLIENT_AUTH env var, asserting anonymous:devframe:auth is left unregistered so the auto-trust shim can take over.

Linked Issues

Fixes #539

Additional context

Verified with pnpm -w exec vitest run packages/core packages/kit and pnpm typecheck (both green), plus a targeted eslint run over the touched files.

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This PR was created with the help of an agent.

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commit: 0e0cfc5