Unable to switch out of the exhausted Luna Reserve mode in an old resumed session

What version of Codex CLI is running?

codex-cli 0.155.0

What subscription do you have?

Just as the title described

Which model were you using?

gpt-reserve

What platform is your computer?

Linux 6.18.33.2-microsoft-standard-WSL2 x86_64 unknown

What terminal emulator and version are you using (if applicable)?

WSL2

Codex doctor report

{
  "schemaVersion": 1,
  "generatedAt": "1789732395s since unix epoch",
  "overallStatus": "fail",
  "codexVersion": "0.155.0",
  "checks": {
    "app_server.status": {
      "id": "app_server.status",
      "category": "app-server",
      "status": "ok",
      "summary": "background server is not running",
      "details": {
        "control socket": "/home/fomalhautbell/.codex/app-server-control/app-server-control.sock",
        "daemon state dir": "/home/fomalhautbell/.codex/app-server-daemon",
        "mode": "ephemeral",
        "pid file": "/home/fomalhautbell/.codex/app-server-daemon/app-server.pid (missing)",
        "settings": "/home/fomalhautbell/.codex/app-server-daemon/settings.json (missing)",
        "status": "not running",
        "update-loop pid file": "/home/fomalhautbell/.codex/app-server-daemon/app-server-updater.pid (missing)"
      },
      "remediation": null,
      "durationMs": 0
    },
    "auth.credentials": {
      "id": "auth.credentials",
      "category": "auth",
      "status": "ok",
      "summary": "auth is configured",
      "details": {
        "auth file": "/home/fomalhautbell/.codex/auth.json",
        "auth storage mode": "File",
        "stored API key": "false",
        "stored ChatGPT tokens": "true",
        "stored agent identity": "false",
        "stored auth mode": "chatgpt"
      },
      "remediation": null,
      "durationMs": 0
    },
    "config.load": {
      "id": "config.load",
      "category": "config",
      "status": "ok",
      "summary": "config loaded",
      "details": {
        "CODEX_HOME": "/home/fomalhautbell/.codex",
        "active thread overrides": "not inspected",
        "config.toml": "/home/fomalhautbell/.codex/config.toml",
        "config.toml parse": "ok",
        "configuration load ms": "17",
        "configuration scope": "invocation config, including cloud-managed policy",
        "cwd": "/home/fomalhautbell",
        "enabled feature flags": "shell_tool, view_image, sleep_tool, unified_exec, unified_exec_tty, unified_exec_zsh_fork, shell_snapshot, content_item_kinds, code_mode_host, terminal_resize_reflow, sqlite, hooks, enable_request_compression, unbounded_connection_retries, multi_agent, apps, tool_search_always_defer_mcp_tools, tool_suggest, plugins, in_app_browser, in_app_chat, in_app_dictation, in_app_local_automation, in_app_updates, browser_use, browser_use_full_cdp_access, browser_use_external, computer_use, remote_plugin, plugin_sharing, image_generation, resize_all_images, item_ids, skill_mcp_dependency_install, skill_search, mentions_v2, steer, guardian_approval, goals, collaboration_modes, tool_call_mcp_elicitation, auth_elicitation, personality, fast_mode, tui_app_server, compaction_image_budget, workspace_dependencies",
        "feature flag overrides": "none",
        "feature flags enabled": "47",
        "log dir": "/home/fomalhautbell/.codex/log",
        "mcp servers": "0",
        "model": "gpt-5.6-sol",
        "model provider": "openai",
        "sqlite home": "/home/fomalhautbell/.codex"
      },
      "remediation": null,
      "durationMs": 0
    },
    "git.environment": {
      "id": "git.environment",
      "category": "git",
      "status": "ok",
      "summary": "git executable found; execution not verified",
      "details": {
        "PATH git #1": "/usr/bin/git",
        "PATH git #2": "/bin/git",
        "PATH git entries": "2",
        "git execution": "not inspected (PATH helpers are not executed)",
        "repo detected": "false",
        "selected git": "/usr/bin/git"
      },
      "remediation": null,
      "durationMs": 6
    },
    "installation": {
      "id": "installation",
      "category": "install",
      "status": "ok",
      "summary": "installation looks consistent",
      "details": {
        "PATH codex #1": "/usr/local/bin/codex",
        "current executable": "/usr/local/lib/node_modules/@openai/codex/node_modules/@openai/codex-linux-x64/vendor/x86_64-unknown-linux-musl/bin/codex",
        "install context": "npm (package /usr/local/lib/node_modules/@openai/codex/node_modules/@openai/codex-linux-x64/vendor/x86_64-unknown-linux-musl, bin /usr/local/lib/node_modules/@openai/codex/node_modules/@openai/codex-linux-x64/vendor/x86_64-unknown-linux-musl/bin, resources /usr/local/lib/node_modules/@openai/codex/node_modules/@openai/codex-linux-x64/vendor/x86_64-unknown-linux-musl/codex-resources, path /usr/local/lib/node_modules/@openai/codex/node_modules/@openai/codex-linux-x64/vendor/x86_64-unknown-linux-musl/codex-path)",
        "managed by Vite+": "false",
        "managed by bun": "false",
        "managed by npm": "true",
        "managed by pnpm": "false",
        "managed package root": "/usr/local/lib/node_modules/@openai/codex",
        "npm update target": "not inspected (PATH helpers are not executed)"
      },
      "remediation": null,
      "durationMs": 7
    },
    "mcp.config": {
      "id": "mcp.config",
      "category": "mcp",
      "status": "ok",
      "summary": "no MCP servers configured",
      "details": {},
      "remediation": null,
      "durationMs": 0
    },
    "network.env": {
      "id": "network.env",
      "category": "network",
      "status": "ok",
      "summary": "network-related environment looks readable",
      "details": {
        "managed proxy": "not configured",
        "proxy env vars": "none",
        "respect system proxy": "disabled"
      },
      "remediation": null,
      "durationMs": 0
    },
    "network.provider_reachability": {
      "id": "network.provider_reachability",
      "category": "reachability",
      "status": "fail",
      "summary": "one or more required provider endpoints are unreachable over HTTP",
      "details": {
        "ChatGPT inference URL": "https://chatgpt.com/backend-api/<redacted> request timed out (required)",
        "reachability mode": "ChatGPT auth"
      },
      "remediation": "Check proxy, VPN, firewall, DNS, and custom CA configuration.",
      "durationMs": 8008
    },
    "network.websocket_reachability": {
      "id": "network.websocket_reachability",
      "category": "websocket",
      "status": "warning",
      "summary": "Responses WebSocket timed out; HTTPS fallback may still work",
      "details": {
        "DNS": "1 IPv4, 1 IPv6, first IPv4",
        "auth mode": "chatgpt",
        "connect timeout": "15000 ms",
        "endpoint": "wss://chatgpt.com/backend-api/<redacted>",
        "model provider": "openai",
        "provider name": "OpenAI",
        "proxy env vars": "none",
        "supports websockets": "true",
        "wire API": "responses"
      },
      "notes": [
        "handshake timed out"
      ],
      "remediation": "Check proxy, VPN, firewall, DNS, custom CA, and WebSocket policy support.",
      "durationMs": 15027
    },
    "runtime.provenance": {
      "id": "runtime.provenance",
      "category": "runtime",
      "status": "ok",
      "summary": "running npm on linux-x86_64",
      "details": {
        "commit": "unknown",
        "current executable": "/usr/local/lib/node_modules/@openai/codex/node_modules/@openai/codex-linux-x64/vendor/x86_64-unknown-linux-musl/bin/codex",
        "install method": "npm (package /usr/local/lib/node_modules/@openai/codex/node_modules/@openai/codex-linux-x64/vendor/x86_64-unknown-linux-musl, bin /usr/local/lib/node_modules/@openai/codex/node_modules/@openai/codex-linux-x64/vendor/x86_64-unknown-linux-musl/bin, resources /usr/local/lib/node_modules/@openai/codex/node_modules/@openai/codex-linux-x64/vendor/x86_64-unknown-linux-musl/codex-resources, path /usr/local/lib/node_modules/@openai/codex/node_modules/@openai/codex-linux-x64/vendor/x86_64-unknown-linux-musl/codex-path)",
        "platform": "linux-x86_64",
        "version": "0.155.0"
      },
      "remediation": null,
      "durationMs": 0
    },
    "runtime.search": {
      "id": "runtime.search",
      "category": "search",
      "status": "ok",
      "summary": "search command found (bundled); execution not verified",
      "details": {
        "search command": "/usr/local/lib/node_modules/@openai/codex/node_modules/@openai/codex-linux-x64/vendor/x86_64-unknown-linux-musl/codex-path/rg",
        "search command readiness": "file exists",
        "search provider": "bundled"
      },
      "remediation": null,
      "durationMs": 0
    },
    "sandbox.helpers": {
      "id": "sandbox.helpers",
      "category": "sandbox",
      "status": "ok",
      "summary": "sandbox configuration is readable",
      "details": {
        "approval policy": "OnRequest",
        "codex-linux-sandbox helper": "/home/fomalhautbell/.codex/tmp/arg0/codex-arg0gFW52N/codex-linux-sandbox",
        "denied-read glob rules": "0",
        "denied-read rules": "0",
        "execve wrapper helper": "/home/fomalhautbell/.codex/tmp/arg0/codex-arg0gFW52N/codex-execve-wrapper",
        "filesystem sandbox": "restricted",
        "glob scan max depth": "unbounded",
        "managed filesystem source": "none",
        "network sandbox": "restricted"
      },
      "remediation": null,
      "durationMs": 0
    },
    "security.endpoint": {
      "id": "security.endpoint",
      "category": "security",
      "status": "ok",
      "summary": "endpoint protection is not inspected on this platform",
      "details": {
        "endpoint products": "not inspected on this platform"
      },
      "remediation": null,
      "durationMs": 0
    },
    "state.paths": {
      "id": "state.paths",
      "category": "state",
      "status": "ok",
      "summary": "state paths and databases are inspectable",
      "details": {
        "CODEX_HOME": "/home/fomalhautbell/.codex (dir)",
        "active rollout files": "5 files, 15224965 total bytes, 3044993 average bytes",
        "archived rollout files": "0 files, 0 total bytes, 0 average bytes",
        "goals DB": "/home/fomalhautbell/.codex/goals_1.sqlite (file)",
        "goals DB integrity": "ok",
        "log DB": "/home/fomalhautbell/.codex/logs_2.sqlite (file)",
        "log DB integrity": "ok",
        "log dir": "/home/fomalhautbell/.codex/log (missing)",
        "memories DB": "/home/fomalhautbell/.codex/memories_1.sqlite (file)",
        "memories DB integrity": "ok",
        "memories v2 DB": "/home/fomalhautbell/.codex/memories_v2_1.sqlite (missing)",
        "memories v2 DB integrity": "skipped (missing)",
        "queue DB": "/home/fomalhautbell/.codex/queue_1.sqlite (file)",
        "queue DB integrity": "ok",
        "sqlite home": "/home/fomalhautbell/.codex (dir)",
        "state DB": "/home/fomalhautbell/.codex/state_5.sqlite (file)",
        "state DB integrity": "ok",
        "thread history DB": "/home/fomalhautbell/.codex/thread_history_1.sqlite (file)",
        "thread history DB integrity": "ok"
      },
      "remediation": null,
      "durationMs": 133
    },
    "state.rollout_db_parity": {
      "id": "state.rollout_db_parity",
      "category": "threads",
      "status": "ok",
      "summary": "rollout files and state DB thread inventory agree",
      "details": {
        "default model provider": "openai",
        "rollout DB active files": "5",
        "rollout DB active rows": "5",
        "rollout DB archive mismatches": "0",
        "rollout DB archived files": "0",
        "rollout DB archived rows": "0",
        "rollout DB duplicate DB paths": "0",
        "rollout DB duplicate rollout thread ids": "0",
        "rollout DB malformed file names": "0",
        "rollout DB missing active rows": "0",
        "rollout DB missing archived rows": "0",
        "rollout DB model providers": "openai=5",
        "rollout DB rows": "5",
        "rollout DB scan cap reached": "false",
        "rollout DB scan errors": "0",
        "rollout DB sources": "subagent:thread_spawn=4, cli=1",
        "rollout DB stale rows": "0"
      },
      "remediation": null,
      "durationMs": 26
    },
    "system.disk": {
      "id": "system.disk",
      "category": "disk",
      "status": "ok",
      "summary": "sufficient free disk space (952.8 GiB)",
      "details": {
        "CODEX_HOME available": "952.8 GiB",
        "failure threshold": "1.0 GiB",
        "warning threshold": "5.0 GiB",
        "worktree available": "952.8 GiB"
      },
      "remediation": null,
      "durationMs": 0
    },
    "system.environment": {
      "id": "system.environment",
      "category": "system",
      "status": "ok",
      "summary": "OS language C",
      "details": {
        "EDITOR": "not set",
        "LANG": "C.UTF-8",
        "VISUAL": "not set",
        "os": "Ubuntu 26.4.0 (resolute) [64-bit]",
        "os language": "C",
        "os type": "Ubuntu",
        "os version": "26.4.0"
      },
      "remediation": null,
      "durationMs": 7
    },
    "terminal.env": {
      "id": "terminal.env",
      "category": "terminal",
      "status": "ok",
      "summary": "terminal metadata was detected",
      "details": {
        "DISPLAY": "present",
        "WAYLAND_DISPLAY": "present",
        "WSL_DISTRO_NAME": "present",
        "WSL_INTEROP": "present",
        "WT_SESSION": "present",
        "color output": "enabled",
        "effective locale": "C.UTF-8",
        "stderr is terminal": "true",
        "stdin is terminal": "true",
        "stdout is terminal": "true",
        "terminal": "Windows Terminal",
        "terminal size": "130x28"
      },
      "remediation": null,
      "durationMs": 0
    },
    "terminal.title": {
      "id": "terminal.title",
      "category": "title",
      "status": "ok",
      "summary": "terminal title default",
      "details": {
        "terminal title activity": "true",
        "terminal title items": "activity, project-name",
        "terminal title project source": "cwd",
        "terminal title project value": "fomalhautbell",
        "terminal title source": "default"
      },
      "remediation": null,
      "durationMs": 0
    },
    "updates.status": {
      "id": "updates.status",
      "category": "updates",
      "status": "ok",
      "summary": "update configuration is locally consistent",
      "details": {
        "cached latest version": "0.155.0",
        "check for update on startup": "true",
        "last checked at": "2026-09-18T09:50:03.861721014Z",
        "latest version": "0.155.0",
        "latest version status": "current version is not older",
        "npm update target": "not inspected (PATH helpers are not executed)",
        "update action": "npm install -g @openai/codex",
        "version cache": "/home/fomalhautbell/.codex/version.json"
      },
      "remediation": null,
      "durationMs": 1592
    }
  }
}

What issue are you seeing?

I am a Plus subscriber. Yesterday, my Luna Reserve usage was exhausted, and my 5h limit was also exhausted. The next day, after the 5h limit refreshed, I reopened the Codex conversation that I had resumed yesterday and wanted to continue working. However, I found that regardless of updating, restarting WSL, or changing network settings, the original conversation could not switch out of Luna Reserve mode. However, when I entered a new conversation, the models under the /model command were refreshed.

What steps can reproduce the bug?

After running codex resume again, or using /resume in a new conversation to resume the original working conversation, /model was still stuck on gpt-5.6-luna.

What is the expected behavior?

After entering /model again, as in a new conversation, any of the other models besides GPT-5.6-Luna appeared.

Additional information

No additional information required.

Start by reproducing the problem in codex-cli 0.155.0 with an old resumed session whose gpt-reserve mode is exhausted, then trace the CLI's resumed-session model selection and switching entry points. Verify the session can switch to another available mode after the reserve is exhausted, and run the relevant CLI tests if they are found.