zeph-core 0.19.0

Core agent loop, configuration, context builder, metrics, and vault for Zeph
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131

// SPDX-FileCopyrightText: 2026 Andrei G <bug-ops>
// SPDX-License-Identifier: MIT OR Apache-2.0

use super::super::{Agent, Channel};

impl<C: Channel> Agent<C> {
    pub(crate) async fn check_trust_transition(&self, skill_name: &str) {
        if let Err(_elapsed) = tokio::time::timeout(
            std::time::Duration::from_secs(2),
            self.check_trust_transition_inner(skill_name),
        )
        .await
        {
            tracing::warn!(
                skill = skill_name,
                "check_trust_transition timed out after 2s"
            );
        }
    }

    #[allow(clippy::too_many_lines)]
    async fn check_trust_transition_inner(&self, skill_name: &str) {
        let Some(memory) = &self.memory_state.persistence.memory else {
            return;
        };
        let Some(config) = &self.learning_engine.config else {
            return;
        };
        let Ok(Some(metrics)) = memory.sqlite().skill_metrics(skill_name).await else {
            return;
        };
        let successes = u32::try_from(metrics.successes).unwrap_or(0);
        let failures = u32::try_from(metrics.failures).unwrap_or(0);
        let total = u32::try_from(metrics.total).unwrap_or(0);
        let posterior = zeph_skills::trust_score::posterior_mean(successes, failures);

        if total >= config.auto_promote_min_uses && posterior > config.auto_promote_threshold {
            if config.cross_session_rollout {
                match memory.sqlite().distinct_session_count(skill_name).await {
                    Ok(sessions) if sessions < i64::from(config.min_sessions_before_promote) => {
                        tracing::debug!(
                            skill = skill_name,
                            sessions,
                            required = config.min_sessions_before_promote,
                            "cross-session rollout: insufficient sessions for promotion"
                        );
                        return;
                    }
                    Ok(_) => {}
                    Err(e) => {
                        tracing::warn!("cross-session count query failed for {skill_name}: {e:#}");
                    }
                }
            }

            let trust_level = memory
                .sqlite()
                .load_skill_trust(skill_name)
                .await
                .ok()
                .flatten()
                .map(|r| r.trust_level);
            // Skip promotion only if explicitly blocked; promote even if no record exists.
            if trust_level.as_deref() != Some("trusted")
                && trust_level.as_deref() != Some("blocked")
            {
                tracing::info!(
                    skill = skill_name,
                    posterior = format!("{posterior:.3}"),
                    total,
                    "auto-promoting skill to trusted"
                );
                if trust_level.is_none() {
                    // No existing record — create one via upsert.
                    let _ = memory
                        .sqlite()
                        .upsert_skill_trust(
                            skill_name,
                            "trusted",
                            zeph_memory::store::SourceKind::Local,
                            None,
                            None,
                            "",
                        )
                        .await;
                } else {
                    let _ = memory
                        .sqlite()
                        .set_skill_trust_level(skill_name, "trusted")
                        .await;
                }
            }
        }

        if total >= config.auto_demote_min_uses && posterior < config.auto_demote_threshold {
            if config.cross_session_rollout {
                match memory.sqlite().distinct_session_count(skill_name).await {
                    Ok(sessions) if sessions < i64::from(config.min_sessions_before_demote) => {
                        tracing::debug!(
                            skill = skill_name,
                            sessions,
                            required = config.min_sessions_before_demote,
                            "cross-session rollout: insufficient sessions for demotion"
                        );
                        return;
                    }
                    Ok(_) => {}
                    Err(e) => {
                        tracing::warn!("cross-session count query failed for {skill_name}: {e:#}");
                    }
                }
            }

            let Ok(Some(trust_row)) = memory.sqlite().load_skill_trust(skill_name).await else {
                return;
            };
            if trust_row.trust_level == "trusted" || trust_row.trust_level == "verified" {
                tracing::warn!(
                    skill = skill_name,
                    posterior = format!("{posterior:.3}"),
                    total,
                    "auto-demoting skill to quarantined"
                );
                let _ = memory
                    .sqlite()
                    .set_skill_trust_level(skill_name, "quarantined")
                    .await;
            }
        }
    }
}