docs(rust): point dependency examples at the published 1.0 line

[rinceyuan]

Summary

rust/README.md still pins version = "0.1" in every dependency example and says the crate is not published yet. It has been on crates.io since 1.0.0 (2026-06-02); the current stable is 1.0.11.

0.1.0 was published 2026-05-06 and predates the feature rename, so it exposes embedded-cli rather than bundled-cli / bundled-in-process. Copying the README's own feature examples fails outright:

$ cargo generate-lockfile     # github-copilot-sdk = { version = "0.1", features = ["bundled-in-process"] }
error: failed to select a version for `github-copilot-sdk`.

The bare github-copilot-sdk = "0.1" does resolve, but silently to the four-month-old 0.1.0, which is a pre-1.0 API.

This updates the six examples to "1.0" and drops the stale pre-publication caveat.

Verification

Real resolution, not cargo add --dry-run (which reports features "as of v1.0.0" and rejects bundled-in-process for that reason even when the requirement is satisfiable):

Dependency line	cargo generate-lockfile
{ version = "0.1", features = ["bundled-in-process"] }	fails to select a version
"0.1"	resolves to 0.1.0
{ version = "1.0", features = ["bundled-in-process"] }	resolves to 1.0.11, 214 packages locked

Feature sets from the crates.io API confirm the cause:

• 0.1.0 - default, derive, embedded-cli, test-support
• 1.0.11 - bundled-cli, bundled-in-process, default, derive, test-support

[Copilot]

Warning

Copilot couldn't run its full agentic review because it didn't start before the timeout. Make sure your repository has a runner available, or add a copilot-code-review.yml file specifying one with the runs-on attribute. See the docs for more details.

Pull request overview

Updates the Rust README dependency examples to target the published stable 1.0 crate line (instead of 0.1) and removes the outdated “not published yet” note so that documented feature examples resolve correctly on crates.io.

Changes:

• Bump all github-copilot-sdk dependency examples from version = "0.1" / "0.1" to version = "1.0" / "1.0".
• Remove the pre-publication caveat about needing path/git dependencies.

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[SteveSandersonMS]

Approved after validating the crates.io resolution and updating the README requirements to the repository's documented compatible \1\ Cargo style.