Codex CLI 0.158.0-alpha.6

• [new] Exec-server capability discovery (discover v2): locate and watch capabilities, including roots/location responses used when probing what the environment can do.
• [new] MCP resource-spec tool handler for working with MCP resource specifications in the tool path.
• [new] Realtime history presentation support for how live session history is shaped for display.
• [changed] Hook configuration recognizes a clearer set of handler kinds (agent, command, MCP tool, and prompt), including matching metadata.
• [changed] Account login modeling includes an Amazon Bedrock path alongside existing auth options.
• [changed] Gateway OAuth delivery prefers bearer tokens via header rather than cookie-based delivery.
• [changed] Scheduled tasks can use a weekly schedule (replacing the prior weekdays-oriented schedule variant).
• [changed] TUI analytics activity chart gains an explicit color palette for the activity view.

Under the hood

• New exec-server discover-v2 surface area (capability manager, location candidates, and watchers) with response types such as capability-location and discover-capabilities payloads.
• Broader filesystem helper/wire responses (canonicalize, open, metadata) and related helper request typing.
• Plugin and skill-oriented data models (ExecutorPlugin, ExecutorSkill, installed-plugin summaries) for describing executor extensions.
• Additional API-shaped payloads for agent list/interrupt, command exec, credit-usage events, project config, tool choice, and login cancel, among others.
• Event/ack adjustments around active-server acknowledgement and command spawn failure signaling; trace/tool-summary enums refined (including generic tool-call summary and runtime-ended trace payload).
• Removal of the older exec-server relay protobuf/framing path and the prior tools catalog-parameters module in favor of the newer layout.
• Version metadata and dependency locks bumped to 0.158.0-alpha.6.