docs(agentydragon): add Task 12 for runtime internet toggle

agentydragon/tasks/12-internet-connection-toggle.md

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+# Task 12: Runtime Internet Connection Toggle
+
+> *This task is specific to codex-rs.*
+
+## Status
+
+**General Status**: Not started  
+**Summary**: Not started; missing Implementation details (How it was implemented and How it works).
+
+## Goal
+
+Allow users to enable or disable internet access at runtime within their container/sandbox session.
+
+## Acceptance Criteria
+
+- Slash command or CLI subcommand (`/toggle-network <on|off>`) to turn internet on or off immediately.
+- Persist network state in session metadata so that resuming a session restores the last setting.
+- Enforce the new network policy dynamically: block or allow outbound network connections without restarting the agent.
+- Reflect the current network status in the CLI prompt or shell title (e.g. 🌐/🚫).
+- Work across supported platforms (Linux sandbox, macOS Seatbelt, Windows) using appropriate sandbox APIs.
+- Include unit and integration tests to verify network toggle behavior and persistence.
+
+## Implementation
+
+**How it was implemented**  
+*(Not implemented yet)*
+
+**How it works**  
+*(Not implemented yet)*
+
+## Notes
+
+- Reuse the existing sandbox network-disable mechanism (`CODEX_SANDBOX_NETWORK_DISABLED_ENV_VAR`) for toggling.
+- On Linux, this may involve updating Landlock or seccomp rules at runtime.
+- On macOS, interact with the Seatbelt profile; consider session restart if necessary.
+- When persisting state, store a `network_enabled: bool` flag in the session JSON.