zeph_config/session.rs
1// SPDX-FileCopyrightText: 2026 Andrei G <bug-ops>
2// SPDX-License-Identifier: MIT OR Apache-2.0
3
4//! Session-scoped user experience settings (#3064).
5//!
6//! Configures behaviours that shape the user's experience per session, such as
7//! showing a recap of the previous conversation on resume.
8
9use serde::{Deserialize, Serialize};
10
11/// Top-level `[session]` config block.
12#[derive(Debug, Clone, Deserialize, Serialize)]
13#[serde(default)]
14pub struct SessionConfig {
15 /// Recap-on-resume settings.
16 pub recap: RecapConfig,
17 /// Whether to persist the last-used provider per channel across restarts.
18 ///
19 /// When `true` (the default), the agent stores the active provider name in `SQLite`
20 /// after each `/provider` switch and restores it on the next startup for the same
21 /// `(channel_type, channel_id)` pair.
22 ///
23 /// Set to `false` to always start with the configured primary provider.
24 pub provider_persistence: bool,
25}
26
27impl Default for SessionConfig {
28 fn default() -> Self {
29 Self {
30 recap: RecapConfig::default(),
31 provider_persistence: true,
32 }
33 }
34}
35
36/// `[session.recap]` — controls the session recap feature (#3064).
37///
38/// A recap summarises the previous conversation in a few sentences and is
39/// shown to the user when they resume a session that has a persisted digest.
40///
41/// # Example
42///
43/// ```toml
44/// [session.recap]
45/// on_resume = true
46/// max_tokens = 200
47/// provider = ""
48/// max_input_messages = 20
49/// ```
50#[derive(Debug, Clone, Deserialize, Serialize)]
51#[serde(default)]
52pub struct RecapConfig {
53 /// Show a recap of the previous session when resuming a conversation.
54 ///
55 /// When `true` and a persisted digest exists for the conversation, the
56 /// agent emits a brief recap before accepting the first user message.
57 /// Default: `true`.
58 pub on_resume: bool,
59
60 /// Maximum tokens for the recap text.
61 ///
62 /// Limits the length of the generated or cached recap. Default: `200`.
63 pub max_tokens: usize,
64
65 /// Provider name from `[[llm.providers]]` for recap LLM calls.
66 ///
67 /// An empty string falls back to the primary provider. Default: `""`.
68 pub provider: String,
69
70 /// Maximum recent messages included when generating a fresh recap.
71 ///
72 /// Used only when no cached digest is available (fresh-generation path).
73 /// Default: `20`.
74 pub max_input_messages: usize,
75}
76
77impl Default for RecapConfig {
78 fn default() -> Self {
79 Self {
80 on_resume: true,
81 max_tokens: 200,
82 provider: String::new(),
83 max_input_messages: 20,
84 }
85 }
86}