combine auth apis

[nikita-seedlabs]

• combines the auth api yamls back together
• removes version bump python script
• fixes rust package version inconsistencies

[Copilot]

Pull request overview

This PR consolidates the Auth OpenAPI specs back into a single YAML, removes the legacy Python-based version bump workflow, and aligns Rust crate versions to the current SDK versioning used elsewhere in the repo.

Changes:

• Merge auth-common.yaml components (schemas + default error response) into auth-api.yaml and update refs accordingly.
• Remove scripts/version_bump.py and drop the version-bump Makefile target.
• Fix Rust version inconsistencies by bumping rust/Cargo.toml and updating rust/Cargo.lock to 1.16.0.

Reviewed changes

Copilot reviewed 7 out of 8 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
scripts/version_bump.py	Deletes the legacy spec-hash/version bump Python script.
Makefile	Removes version-bump target; generate now only regenerates clients.
resources/auth-common.yaml	Removes the separate “auth common” spec file (now merged).
resources/auth-api.yaml	Adds DefaultError + LoginResponse and updates $refs to be self-contained.
rust/Cargo.toml	Bumps bluefin-pro version to 1.16.0 to match the workspace/dependency versions.
rust/Cargo.lock	Updates locked package versions for bluefin-pro and bluefin_api to 1.16.0.
rust/gen/bluefin_api/.openapi-generator/FILES	Updates generated-file manifest (drops .openapi-generator-ignore entry).
.apigen-state	Updates stored spec hashes / combined hash after auth spec consolidation.

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