zeph-core 0.15.2

Core agent loop, configuration, context builder, metrics, and vault for Zeph
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// SPDX-FileCopyrightText: 2026 Andrei G <bug-ops>
// SPDX-License-Identifier: MIT OR Apache-2.0

#[derive(Debug, thiserror::Error)]
pub enum SubAgentError {
    #[error("parse error in {path}: {reason}")]
    Parse { path: String, reason: String },

    #[error("invalid definition: {0}")]
    Invalid(String),

    #[error("agent not found: {0}")]
    NotFound(String),

    #[error("spawn failed: {0}")]
    Spawn(String),

    #[error("concurrency limit reached (active: {active}, max: {max})")]
    ConcurrencyLimit { active: usize, max: usize },

    #[error("cancelled")]
    Cancelled,

    #[error("invalid command: {0}")]
    InvalidCommand(String),

    #[error("transcript error: {0}")]
    Transcript(String),

    #[error("ambiguous id prefix '{0}': matches {1} agents")]
    AmbiguousId(String, usize),

    #[error("agent '{0}' is still running; cancel it first or wait for completion")]
    StillRunning(String),

    #[error("memory error for agent '{name}': {reason}")]
    Memory { name: String, reason: String },

    #[error("I/O error at {path}: {reason}")]
    Io { path: String, reason: String },

    #[error("LLM call failed: {0}")]
    Llm(String),

    #[error("channel send failed: {0}")]
    Channel(String),

    #[error("task panicked: {0}")]
    TaskPanic(String),
}