feat: observe option — observe build conditions + compiler componentNames

[ryansolid]

Summary

New observe: true option for production observability builds:

• Adds the observe export condition to every environment — client and server, resolve.conditions and resolve.externalConditions — and inlines the core runtime (and its consumers, via the semi-framework crawl) for server builds, the same way the dev posture does, so one build is loaded end to end rather than the app's solid-js resolving the observe build while an externalized consumer's import "solid-js" lands on Node's prod copy.
• Turns on the compiler's componentNames option, so component owner labels (<Home>) survive minification in diagnostic ownerPaths and attribution chains. The dev posture also gets componentNames (a lazy() or HMR wrapper otherwise hides the tag name).
• Under vite dev the development condition still wins (solid-js nests it above observe).

Verified on a Sentry adapter spike: with the local plugin and compilers linked, a minified vite build resolves the observe runtime and reports <Router> › … › <Layout> › … › <Show> › … › <For> instead of mangled names.

Gating

Depends on solidjs/solid#3340 (componentNames in @solidjs/compiler / @solidjs/babel-plugin). An older compiler rejects the unknown option, so before merging this PR needs @solidjs/compiler and @solidjs/babel-plugin bumped to the release that carries it (^2.0.0-rc.8) with the lockfile regenerated. Left unbumped here since that version isn't published yet.

Co-authored with Claude via Cursor.

[changeset-bot]

🦋 Changeset detected

Latest commit: 0ba22a0

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@solidjs/vite-plugin	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/@solidjs/vite-plugin@357

commit: 0ba22a0