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OpenAI Codex v0.148.0 Adds Markdown Export, Session Forking, and Amazon Bedrock Support

OpenAI released Codex v0.148.0, adding TUI conversation export to Markdown, session forking with `codex exec fork`, draft prompts during startup, and Amazon Bedrock Runtime as a built-in provider. Bug fixes include model switching, session restoration, and sandbox restrictions failing closed on denied paths.

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Summary last validated Aug 19, 2026

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