## Why
Standalone MCP commands must honor `application.network` restrictions during OAuth discovery and login, even when the MCP server is allowed by its identity requirements.
## What changed
- Apply local network policy to cloud configuration bootstrap authentication and activate the effective policy on the loaded CLI configuration.
- Load `codex mcp add` through the shared cloud configuration loader and use its resolved `codex_home` when saving server configuration.
- Block disallowed OAuth discovery requests before connecting while preserving the ability to save a server when discovery is unavailable.
## Testing
Add isolated regression tests for blocked MCP discovery and login, discovery with network policy disabled, allowed and denied HTTPS destinations, and rejection of malformed managed network policy. Connection checks verify that denied requests never reach a TCP listener.
GitOrigin-RevId: f91401b51d6e6b9472bb01838f0d0903f83d62f3
## Why
MCP OAuth configuration supported a pre-registered client ID but could not supply a client secret for token exchange or refresh.
## What changed
- Add `oauth.client_secret` and `codex mcp add --oauth-client-secret`, requiring a nonempty secret and client ID. Persist the secret in server configuration and accept `clientSecret` in plugin configuration.
- Pass configured credentials through CLI, app-server, and plugin login flows and token refresh. Require a new login when a configured confidential client's ID differs from stored credentials.
- Redact secrets in debug output and keep them out of authorization URLs and persisted OAuth token records.
- Invalidate cached OAuth connections when the configured client ID or secret changes.
## Testing
Add coverage for configuration validation and round trips, CLI argument redaction and subsequent login, app-server login, connection invalidation, and refresh with `client_secret_basic` and `client_secret_post` in both refresh modes. Verify secret exclusion from token records and reject mismatched client IDs before contacting the provider.
GitOrigin-RevId: 85bb0e410e9e68e6cd68eb6359badfc7eac78147
lsingh-oai