feat: integrate Cloudflare tooling packages

[BlankParticle]

Summary

Flattens the standalone cloudflare-tools repository into the Alchemy monorepo and removes the cloudflare-tools submodule.

This brings the Cloudflare runtime, Cloudflare-specific framework adapters, shared test tooling, and end-to-end fixtures into the same workspace as Alchemy so they can be developed, tested, and released together.

What changed

• adds @alchemy.run/cloudflare-runtime, consolidating the Cloudflare core runtime and Vite/Rolldown integrations
• adds @alchemy.run/cloudflare-frameworks, consolidating the Cloudflare adapters for Astro, Next.js, Nuxt, Octane, SvelteKit, and Waku
• adds internal @alchemy.run/cloudflare-test-tools helpers and the framework E2E fixture suite
• updates Alchemy, examples, fixtures, and current documentation to use the consolidated @alchemy.run/* packages and valid root-package install commands
• integrates the imported packages into the workspace TypeScript, Turbo, Bun, formatting, and CI configuration
• folds the imported packages into the existing release workflow and keeps Cloudflare package tests in a dedicated workflow
• preserves the latest Website.Vite queue-consumer behavior from the target branch
• removes the old package references and the cloudflare-tools git submodule

Included cloudflare-tools PRs

• alchemy-run/cloudflare-tools#78 — build the Rolldown plugin before the runtime packages
• alchemy-run/cloudflare-tools#106 — keep framework build output interceptable by host reporters
• alchemy-run/cloudflare-tools#107 — pipe OpenNext runner output instead of inheriting stdio
• alchemy-run/cloudflare-tools#110 — expand framework fixture coverage and use assets-first routing by default

Verification

• vp install --frozen-lockfile
• vpr typecheck:cloudflare-packages
• vpx tsc -b --pretty false
• vpr docs:check
• framework unit tests: 259 passed
• Next.js fixture production build
• package dry runs for @alchemy.run/cloudflare-runtime, @alchemy.run/cloudflare-frameworks, and @alchemy.run/cloudflare-test-tools
• all 83 declared framework package export targets validated against built files

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[alchemy-version-bot]

Install the packages built from this commit:

alchemy

bun add alchemy@https://pkg.ing/alchemy/63750f8

@alchemy.run/better-auth

bun add @alchemy.run/better-auth@https://pkg.ing/@alchemy.run/better-auth/63750f8

@alchemy.run/cloudflare-runtime

bun add @alchemy.run/cloudflare-runtime@https://pkg.ing/@alchemy.run/cloudflare-runtime/63750f8

@alchemy.run/cloudflare-frameworks

bun add @alchemy.run/cloudflare-frameworks@https://pkg.ing/@alchemy.run/cloudflare-frameworks/63750f8

@alchemy.run/pr-package

bun add @alchemy.run/pr-package@https://pkg.ing/@alchemy.run/pr-package/63750f8