feat(codex): expose CLI personality selection in remote sessions

[swear01]

What feature would you like to see?

Expose Codex CLI personality selection in remote HAPI sessions.

Codex CLI supports friendly, pragmatic, and none, and the app-server protocol already accepts personality on thread/start, thread/resume, and turn/start. HAPI declares those protocol fields but currently has no session state, composer selector, slash handling, or launcher wiring for them.

Expected behavior

• Add a Codex-only personality setting to the session/composer runtime controls.
• Pass the selected personality to Codex app-server turns (and thread start/resume where appropriate).
• Support /personality friendly|pragmatic|none; querying without an argument should report the current value.
• Default/unset must preserve the user's Codex configuration instead of forcing a personality.
• Keep this scoped to Codex CLI parity; it is unrelated to HAPI voice personality.
• Add focused state propagation, slash parser, and turn-param tests.

[github-actions]

Verified. HAPI currently has the Codex app-server personality fields typed, but I did not find runtime/session/UI/slash-command wiring for selecting or forwarding a Codex CLI personality yet.

Current state:

• Codex app-server types include personality?: string on thread/start, thread/resume, and turn/start params.
• HAPI's runtime session state currently tracks permission mode, model, model reasoning effort, service tier, and Codex collaboration mode, but not personality.
• The web composer settings menu exposes Codex collaboration mode, permission mode, model, reasoning effort, and Fast mode; no personality selector was found.
• The Codex slash parser supports /status, /model, /reasoning, /fast, /permissions, /plan, /goal, etc.; /personality is not present.
• The app-server parameter builders do not set params.personality, so default/unset behavior currently means the field is omitted.

This looks like a real missing Codex parity feature, separate from the existing HAPI voice personality code.

Relevant code:

• cli/src/codex/appServerTypes.ts:69 - ThreadStartParams includes personality?: string.
• cli/src/codex/appServerTypes.ts:98 - ThreadResumeParams includes personality?: string.
• cli/src/codex/appServerTypes.ts:168 - TurnStartParams includes personality?: string.
• cli/src/codex/utils/appServerConfig.ts:114 - builds thread/start params, currently omits personality.
• cli/src/codex/utils/appServerConfig.ts:161 - builds turn/start params, currently omits personality.
• cli/src/codex/loop.ts:14 - Codex EnhancedMode has no personality field.
• shared/src/schemas.ts:207 - shared SessionSchema has no personality field.
• shared/src/socket.ts:204 - session-alive runtime config has no personality field.
• hub/src/sync/sessionCache.ts:15 - runtime config keys exclude personality.
• shared/src/apiTypes.ts:120 - Codex collaboration-mode request schema exists; no personality request schema found nearby.
• web/src/components/AssistantChat/HappyComposer.tsx:135 - composer props expose runtime controls, no personality prop.
• cli/src/codex/utils/slashCommands.ts:57 - Codex slash parser has no /personality branch.

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HAPI Bot