Struct PreflightInput 

pub struct PreflightInput {
    pub resume_flag: String,
    pub session_id: String,
    pub working_dir: String,
    pub config_dir: String,
    pub history_session_id: String,
    pub chain_head: Option<Head>,
    pub identity_key: Option<String>,
    pub fork_source: Option<Head>,
}

Everything preflight needs, lifted out of block meta by the caller so this stays a pure-ish function over plain values (one is_file and at most one read_dir of a single directory — no store, no block, no RPC types).

Fields

resume_flag: String

agent:resume_flag — empty means this provider has no --resume.

session_id: String

agent:sessionid — the id the next spawn would attempt, if any.

working_dir: String

cmd:cwd — unexpanded is fine; expansion matches the spawn path.

config_dir: String

CLAUDE_CONFIG_DIR out of cmd:env.

history_session_id: String

The session of the history this pane renders (persistent::pane_history_session_id). A first spawn with no session_id continues it when reachable. Empty when there is none.

chain_head: Option<Head>

The head of the agent’s segment chain (continuity_segments::chain_head), for the spawn’s resume gate (SPEC_RESUME_GATE_AND_SAME_IDENTITY_CONTINUATION_2026_09_25.md §4.2). None when the pane has no agent UID or the agent no chain.

identity_key: Option<String>

The identity config_dir is signed in as (account_email::identity_key_from_oauth_dir), for the gate’s identity check. None when unknown.

fork_source: Option<Head>

The chain head of the agent this one was forked from, when it has no chain of its own (continuity_segments::fork_source_head).

Trait Implementations

impl Clone for PreflightInput

fn clone(&self) -> PreflightInput

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PreflightInput

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

Formats the value using the given formatter.

impl Default for PreflightInput

fn default() -> PreflightInput

Returns the “default value” for a type.