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Improve Plan mode reasoning selection flow (#12303)

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Addresses https://github.com/openai/codex/issues/11013

## Summary
- add a Plan implementation path in the TUI that lets users choose
reasoning before switching to Default mode and implementing
- add Plan-mode reasoning scope handling (Plan-only override vs
all-modes default), including config/schema/docs plumbing for
`plan_mode_reasoning_effort`
- remove the hardcoded Plan preset medium default and make the reasoning
popup reflect the active Plan override as `(current)`
- split the collaboration-mode switch notification UI hint into #12307
to keep this diff focused

If I have `plan_mode_reasoning_effort = "medium"` set in my
`config.toml`:
<img width="699" height="127" alt="Screenshot 2026-02-20 at 6 59 37 PM"
src="https://github.com/user-attachments/assets/b33abf04-6b7a-49ed-b2e9-d24b99795369"
/>

If I don't have `plan_mode_reasoning_effort` set in my `config.toml`:
<img width="704" height="129" alt="Screenshot 2026-02-20 at 7 01 51 PM"
src="https://github.com/user-attachments/assets/88a086d4-d2f1-49c7-8be4-f6f0c0fa1b8d"
/>

## Codex author
`codex resume 019c78a2-726b-7fe3-adac-3fa4523dcc2a`
This commit is contained in:
Charley Cunningham
2026-02-20 20:08:56 -08:00
committed by GitHub
parent 7ae5d88016
commit 4c1744afb2
10 changed files with 558 additions and 55 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
codex-rs/core/src/config/mod.rs
View File

@@ -376,6 +376,13 @@ pub struct Config {
/// Value to use for `reasoning.effort` when making a request using the
/// Responses API.
pub model_reasoning_effort: Option<ReasoningEffort>,
/// Optional Plan-mode-specific reasoning effort override used by the TUI.
///
/// When unset, Plan mode uses the built-in Plan preset default (currently
/// `medium`). When explicitly set (including `none`), this overrides the
/// Plan preset. The `none` value means "no reasoning" (not "inherit the
/// global default").
pub plan_mode_reasoning_effort: Option<ReasoningEffort>,
/// If not "none", the value to use for `reasoning.summary` when making a
/// request using the Responses API.
@@ -1107,6 +1114,7 @@ pub struct ConfigToml {
pub show_raw_agent_reasoning: Option<bool>,
pub model_reasoning_effort: Option<ReasoningEffort>,
pub plan_mode_reasoning_effort: Option<ReasoningEffort>,
pub model_reasoning_summary: Option<ReasoningSummary>,
/// Optional verbosity control for GPT-5 models (Responses API `text.verbosity`).
pub model_verbosity: Option<Verbosity>,
@@ -2042,6 +2050,9 @@ impl Config {
model_reasoning_effort: config_profile
.model_reasoning_effort
.or(cfg.model_reasoning_effort),
plan_mode_reasoning_effort: config_profile
.plan_mode_reasoning_effort
.or(cfg.plan_mode_reasoning_effort),
model_reasoning_summary: config_profile
.model_reasoning_summary
.or(cfg.model_reasoning_summary)
@@ -4588,6 +4599,7 @@ model_verbosity = "high"
hide_agent_reasoning: false,
show_raw_agent_reasoning: false,
model_reasoning_effort: Some(ReasoningEffort::High),
plan_mode_reasoning_effort: None,
model_reasoning_summary: ReasoningSummary::Detailed,
model_supports_reasoning_summaries: None,
model_catalog: None,
@@ -4708,6 +4720,7 @@ model_verbosity = "high"
hide_agent_reasoning: false,
show_raw_agent_reasoning: false,
model_reasoning_effort: None,
plan_mode_reasoning_effort: None,
model_reasoning_summary: ReasoningSummary::default(),
model_supports_reasoning_summaries: None,
model_catalog: None,
@@ -4826,6 +4839,7 @@ model_verbosity = "high"
hide_agent_reasoning: false,
show_raw_agent_reasoning: false,
model_reasoning_effort: None,
plan_mode_reasoning_effort: None,
model_reasoning_summary: ReasoningSummary::default(),
model_supports_reasoning_summaries: None,
model_catalog: None,
@@ -4930,6 +4944,7 @@ model_verbosity = "high"
hide_agent_reasoning: false,
show_raw_agent_reasoning: false,
model_reasoning_effort: Some(ReasoningEffort::High),
plan_mode_reasoning_effort: None,
model_reasoning_summary: ReasoningSummary::Detailed,
model_supports_reasoning_summaries: None,
model_catalog: None,