Move auth code into login crate (#15150)

- Move the auth implementation and token data into codex-login.
- Keep codex-core re-exporting that surface from codex-login for
existing callers.

---------

Co-authored-by: Codex <noreply@openai.com>

codex-rs/core/Cargo.toml

@@ -31,17 +31,16 @@ codex-api = { workspace = true }
 codex-app-server-protocol = { workspace = true }
 codex-apply-patch = { workspace = true }
 codex-async-utils = { workspace = true }
-codex-client = { workspace = true }
 codex-connectors = { workspace = true }
 codex-config = { workspace = true }
 codex-exec-server = { workspace = true }
+codex-login = { workspace = true }
 codex-shell-command = { workspace = true }
 codex-skills = { workspace = true }
 codex-execpolicy = { workspace = true }
 codex-file-search = { workspace = true }
 codex-git = { workspace = true }
 codex-hooks = { workspace = true }
-codex-keyring-store = { workspace = true }
 codex-network-proxy = { workspace = true }
 codex-otel = { workspace = true }
 codex-artifacts = { workspace = true }
@@ -70,11 +69,9 @@ http = { workspace = true }
 iana-time-zone = { workspace = true }
 image = { workspace = true, features = ["jpeg", "png", "webp"] }
 indexmap = { workspace = true }
-keyring = { workspace = true, features = ["crypto-rust"] }
 libc = { workspace = true }
 notify = { workspace = true }
 once_cell = { workspace = true }
-os_info = { workspace = true }
 rand = { workspace = true }
 regex-lite = { workspace = true }
 reqwest = { workspace = true, features = ["json", "stream"] }
@@ -89,7 +86,6 @@ serde = { workspace = true, features = ["derive"] }
 serde_json = { workspace = true }
 serde_yaml = { workspace = true }
 sha1 = { workspace = true }
-sha2 = { workspace = true }
 shlex = { workspace = true }
 similar = { workspace = true }
 tempfile = { workspace = true }
@@ -120,13 +116,11 @@ wildmatch = { workspace = true }
 zip = { workspace = true }
 
 [target.'cfg(target_os = "linux")'.dependencies]
-keyring = { workspace = true, features = ["linux-native-async-persistent"] }
 landlock = { workspace = true }
 seccompiler = { workspace = true }
 
 [target.'cfg(target_os = "macos")'.dependencies]
 core-foundation = "0.9"
-keyring = { workspace = true, features = ["apple-native"] }
 
 # Build OpenSSL from source for musl builds.
 [target.x86_64-unknown-linux-musl.dependencies]
@@ -137,16 +131,12 @@ openssl-sys = { workspace = true, features = ["vendored"] }
 openssl-sys = { workspace = true, features = ["vendored"] }
 
 [target.'cfg(target_os = "windows")'.dependencies]
-keyring = { workspace = true, features = ["windows-native"] }
 windows-sys = { version = "0.52", features = [
     "Win32_Foundation",
     "Win32_System_Com",
     "Win32_UI_Shell",
 ] }
 
-[target.'cfg(any(target_os = "freebsd", target_os = "openbsd"))'.dependencies]
-keyring = { workspace = true, features = ["sync-secret-service"] }
-
 [target.'cfg(unix)'.dependencies]
 codex-shell-escalation = { workspace = true }