zeph_common/config/
memory.rs

1// SPDX-FileCopyrightText: 2026 Andrei G <bug-ops>
2// SPDX-License-Identifier: MIT OR Apache-2.0
3
4//! Shared runtime configuration structs for memory subsystems.
5//!
6//! These are plain (no serde) structs used as runtime parameters. They are separate from the
7//! serde-annotated config types in `zeph-config` which own the deserialization concerns.
8
9/// Runtime config for Kumiho belief revision passed into resolver methods.
10#[derive(Debug, Clone)]
11pub struct BeliefRevisionConfig {
12    pub similarity_threshold: f32,
13}
14
15/// Runtime config for A-MEM dynamic note linking.
16#[derive(Debug, Clone)]
17pub struct NoteLinkingConfig {
18    pub enabled: bool,
19    pub similarity_threshold: f32,
20    pub top_k: usize,
21    pub timeout_secs: u64,
22}
23
24impl Default for NoteLinkingConfig {
25    fn default() -> Self {
26        Self {
27            enabled: false,
28            similarity_threshold: 0.85,
29            top_k: 10,
30            timeout_secs: 5,
31        }
32    }
33}
34
35/// Runtime config for Hebbian background consolidation (HL-F3/F4, #3345).
36///
37/// Passed to `spawn_consolidation_loop` after being constructed from `HebbianConfig` in the
38/// top-level runner.
39#[derive(Debug, Clone)]
40pub struct HebbianConsolidationConfig {
41    /// How often the consolidation sweep runs, in seconds. `0` disables the loop.
42    pub consolidation_interval_secs: u64,
43    /// Minimum `degree × avg_weight` score for a candidate to qualify.
44    pub consolidation_threshold: f64,
45    /// Maximum candidates processed per sweep.
46    pub max_candidates_per_sweep: usize,
47    /// Re-consolidation cooldown per entity, in seconds.
48    pub consolidation_cooldown_secs: u64,
49    /// LLM prompt timeout per distillation call, in seconds.
50    pub consolidation_prompt_timeout_secs: u64,
51    /// Maximum neighbour summaries passed to the LLM per candidate.
52    pub consolidation_max_neighbors: usize,
53}
54
55impl Default for HebbianConsolidationConfig {
56    fn default() -> Self {
57        Self {
58            consolidation_interval_secs: 3600,
59            consolidation_threshold: 5.0,
60            max_candidates_per_sweep: 10,
61            consolidation_cooldown_secs: 86_400,
62            consolidation_prompt_timeout_secs: 30,
63            consolidation_max_neighbors: 20,
64        }
65    }
66}
67
68/// Runtime config for the consolidation sweep loop.
69#[derive(Debug, Clone)]
70pub struct ConsolidationConfig {
71    pub enabled: bool,
72    pub confidence_threshold: f32,
73    pub sweep_interval_secs: u64,
74    pub sweep_batch_size: usize,
75    pub similarity_threshold: f32,
76    /// LLM call timeout per `propose_merge_op` invocation, in seconds.
77    pub llm_timeout_secs: u64,
78}
79
80/// Runtime config for the forgetting sweep (#2397).
81#[derive(Debug, Clone)]
82pub struct ForgettingConfig {
83    /// Enable the forgetting sweep.
84    pub enabled: bool,
85    /// Per-sweep decay rate applied to importance scores. Range: (0.0, 1.0).
86    pub decay_rate: f32,
87    /// Importance floor below which memories are pruned. Range: [0.0, 1.0].
88    pub forgetting_floor: f32,
89    /// How often the forgetting sweep runs, in seconds.
90    pub sweep_interval_secs: u64,
91    /// Maximum messages to process per sweep.
92    pub sweep_batch_size: usize,
93    /// Hours: messages accessed within this window get replay protection.
94    pub replay_window_hours: u32,
95    /// Messages with `access_count` >= this get replay protection.
96    pub replay_min_access_count: u32,
97    /// Hours: never prune messages accessed within this window.
98    pub protect_recent_hours: u32,
99    /// Never prune messages with `access_count` >= this.
100    pub protect_min_access_count: u32,
101}
102
103impl Default for ForgettingConfig {
104    fn default() -> Self {
105        Self {
106            enabled: false,
107            decay_rate: 0.1,
108            forgetting_floor: 0.05,
109            sweep_interval_secs: 7200,
110            sweep_batch_size: 500,
111            replay_window_hours: 24,
112            replay_min_access_count: 3,
113            protect_recent_hours: 24,
114            protect_min_access_count: 3,
115        }
116    }
117}
zeph_common/config/memory.rs

zeph_common/config/
memory.rs
