feat(cloudflare): inherit worker bindings from exact versions

[benpsnyder]

Summary

• add a first-class, value-free Worker binding inheritance contract pinned to an exact prior version
• propagate Cloudflare strict inheritance through regular, versioned, gradual-deployment, and dispatch-namespace uploads
• reject non-deterministic or ambiguous configurations, including latest, blank or duplicate names, and overlaps with explicit or Alchemy-managed bindings
• include the canonical inheritance contract in the Worker metadata hash
• document code-only deployment usage and add request-path plus live provider coverage

No inherited binding values are read, logged, or persisted by Alchemy.

Proposed DX

yield* Cloudflare.Worker("Api", {
  main: "./src/api.ts",
  bindingInheritance: {
    mode: "strict",
    versionId: priorVersionId,
    bindingNames: ["API_TOKEN", "SIGNING_KEY"],
  },
});

Validation

• bun tsc -b packages/alchemy/tsconfig.json
• bun run docs:check
• bun x oxfmt --check on all changed source and test files
• git diff --check
• executable runtime assertions for lowering, conflict rejection, and regular/dispatch request propagation

Closes #1024

[sam-goodwin]

Please include the proposed DX as a code snippet in PR description

[benpsnyder]

Added — the PR description now includes the proposed bindingInheritance DX with strict mode, an exact prior version ID, and the named bindings to inherit. Thanks!