Struct CoreSection 

pub struct CoreSection {

    pub model: Option<String>,
    pub base_url: Option<String>,
    pub api_key_env: Option<String>,
    pub api_key_cmd: Option<String>,
    pub effort: Option<String>,
    pub temperature: Option<f32>,
    pub max_tokens: Option<u32>,
    pub max_iterations: Option<usize>,
    pub max_total_output_tokens: Option<u64>,
    pub max_tool_output_bytes: Option<usize>,
    pub parallel_tool_calls: Option<bool>,
    pub shell_env_snapshot: Option<bool>,
    pub system_prompt: Option<String>,
    pub append_system_prompt: Option<String>,
    pub project_context: Option<bool>,
    pub env_context: Option<bool>,
    pub context_injections: Option<bool>,
    pub nested_instructions: Option<bool>,
    pub instruction_imports: Option<bool>,
    pub project_root_markers: Option<Vec<String>>,
    pub hot_reload: Option<bool>,
    pub project_doc_max_bytes: Option<usize>,
    pub additional_dirs: Option<Vec<String>>,
    pub extra_headers: Option<HashMap<String, String>>,
    pub extra_body: Option<Map<String, Value>>,
    pub doom_loop_threshold: Option<u32>,
    pub model_switch: CoreModelSwitchConfig,
    pub retry: CoreRetryConfig,
    pub tools: CoreToolsConfig,
    pub skills: CoreSkillsConfig,
    pub prompts: BTreeMap<String, String>,
    pub compaction: CoreCompactionConfig,
    pub session: CoreSessionConfig,
    pub steering: CoreSteeringConfig,
    pub output: CoreOutputConfig,
}

[core] (§3.1 lines 581-609 + the named subtables that follow).

Fields

model: Option<String>

Config.model (config.rs).

base_url: Option<String>

Config.base_url (config.rs). [project-forbidden] (§3.3).

api_key_env: Option<String>

Config.api_key_env (config.rs). [project-forbidden] (§3.3).

api_key_cmd: Option<String>

NEW: credential helper (!command form, pi§6 / D6 row). [project-forbidden]. P4: consumed by the CLI’s credential resolution (userconfig::resolve_api_key) — captured, not yet wired.

effort: Option<String>

Config.effort (config.rs).

temperature: Option<f32>

Config.temperature (config.rs).

max_tokens: Option<u32>

Config.max_tokens (config.rs).

max_iterations: Option<usize>

Config.max_iterations (config.rs).

max_total_output_tokens: Option<u64>

Config.max_total_output_tokens (config.rs); 0/absent = off.

max_tool_output_bytes: Option<usize>

Config.max_tool_output_bytes (config.rs).

parallel_tool_calls: Option<bool>

NEW: universal parallel tool-call execution (catalog:59). P4e: consumed by Agent::run_tools_concurrently — see Config::parallel_tool_calls’s doc comment.

shell_env_snapshot: Option<bool>

NEW: shell-env snapshotting (catalog:338). P3/P4: consumed by the bash tool module.

system_prompt: Option<String>

Config.system_prompt (config.rs). [project-forbidden] (§3.3).

append_system_prompt: Option<String>

NEW: append lever (D2 row 1). [project-forbidden]. P4: consumed by prompt assembly, alongside system_prompt.

project_context: Option<bool>

Config.load_project_context (config.rs).

env_context: Option<bool>

NEW: environment block (catalog §4a). P4: consumed by prompt assembly.

context_injections: Option<bool>

NEW: synthetic nudge blocks (catalog:91). P4: consumed by prompt assembly.

nested_instructions: Option<bool>

NEW: on-demand subdir instruction loading (catalog:84). P4: consumed by the skills/instructions subsystem.

instruction_imports: Option<bool>

NEW: @path / instructions[] imports (catalog:85). P4: consumed by the skills/instructions subsystem.

project_root_markers: Option<Vec<String>>

NEW: directory-walk stop markers (catalog:232). P4: consumed by project-context discovery.

hot_reload: Option<bool>

NEW: live-apply config edits (catalog:221). ASPIRATIONAL / UNIMPLEMENTED (P4e assessment): a genuine config-file-watch + live-reload subsystem — detecting the resolved file changing on disk, re-resolving the full extends/layering chain, and safely swapping a live Agent’s Config mid-run without corrupting in-flight state — is M+ (an architecturally significant addition per catalog:221’s “COMMON row” classification, not a small runtime gap), not the S-sized “NEW: small” a config-plumbing-only key would be. This field parses and round-trips through every merge/overlay step (so a config file setting it is never silently dropped or misinterpreted) but has NO consumer: setting it does nothing. Needs explicit scheduling as its own unit (P5+), not a half-built watcher here.

project_doc_max_bytes: Option<usize>

P4b (design §5.2 “P4” “instruction-walk nuances”, cx§2 project_doc_max_bytes analog, §3.1 core.project_doc_max_bytes): hygiene cap on the total bytes of assembled instruction-file content — see Config::project_doc_max_bytes. Consumed by prompt assembly.

additional_dirs: Option<Vec<String>>

Config.additional_dirs (config.rs). Project files may only ADD under the repo root (§3.3) — enforced by sanitize_for_project’s is_safe_project_dir check (LOW-1, Fable-5 P4a review), which strips absolute/~/..-escaping/${VAR}-expanding entries from a project layer before this is expanded (to_config_profile). User/global layers are unrestricted.

extra_headers: Option<HashMap<String, String>>

Config.extra_headers (config.rs). [project-forbidden]: exfil channel (§3.3).

extra_body: Option<Map<String, Value>>

Config.extra_body (config.rs). [project-forbidden] (§3.3).

doom_loop_threshold: Option<u32>

P4c (design §5.2 “P4”, §5.2 P4 “doom-loop breaker”, oc doom_loop UNIQUE row, catalog D3): repeated-identical-tool-call threshold — see Config::doom_loop_threshold. None/absent = off (today’s behavior).

model_switch: CoreModelSwitchConfig

[core.model_switch] — see the module-level doc comment on the [core.model] naming conflict.

retry: CoreRetryConfig

[core.retry] (obligation 1; pi§3 naming).

tools: CoreToolsConfig

[core.tools] — registry shaping.

skills: CoreSkillsConfig

[core.skills] (obligation 4, D-7).

prompts: BTreeMap<String, String>

[core.prompts] — maps directly onto Config.prompts (config.rs); a table merged key-wise onto the built-ins, not a wholesale replace (§3.3), via ConfigBuilder::apply_profile.

compaction: CoreCompactionConfig

[core.compaction] (obligation 5).

session: CoreSessionConfig

[core.session] (obligation 6).

steering: CoreSteeringConfig

[core.steering] (obligation 7; pi§3 semantics).

output: CoreOutputConfig

[core.output] (obligation 9).

Trait Implementations

impl Clone for CoreSection

fn clone(&self) -> CoreSection

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for CoreSection

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Default for CoreSection

fn default() -> CoreSection

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for CoreSection

fn deserialize<__D>( __deserializer: __D, ) -> Result<CoreSection, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for CoreSection

fn eq(&self, other: &CoreSection) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for CoreSection

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for CoreSection