context-governor 0.2.0

Crate-agnostic governed context compaction with receipts, exact fallback references, and recall quality filters
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

use context_governor::{
    archive_response_to_memory, compact_context, CompactRequest, CompactionPolicy,
    MemoryArchiveRecordV1, MemorySink, Message,
};

fn msg(role: &str, content: &str) -> Message {
    Message {
        id: None,
        role: role.into(),
        content: content.into(),
        name: None,
        metadata: Default::default(),
    }
}

#[derive(Default)]
struct RecordingSink {
    records: Vec<MemoryArchiveRecordV1>,
}

impl MemorySink for RecordingSink {
    fn archive_context_record(
        &mut self,
        record: &MemoryArchiveRecordV1,
    ) -> Result<Option<String>, context_governor::ContextGovernorError> {
        self.records.push(record.clone());
        Ok(Some(format!("fact:{}", record.item_id)))
    }
}

#[test]
fn memory_archive_records_are_explicit_and_result_bound() {
    let response = compact_context(CompactRequest {
        session_id: "memory".into(),
        messages: vec![
            msg("system", "system"),
            msg(
                "user",
                "Decision: archive this durable architecture choice.",
            ),
            msg("assistant", &"low value chatter ".repeat(400)),
            msg("user", "latest"),
        ],
        policy: CompactionPolicy {
            archive_memory_enabled: true,
            target_tokens: 120,
            protect_first_n: 0,
            protect_last_n: 1,
            ..Default::default()
        },
        focus: None,
    })
    .unwrap();

    let mut sink = RecordingSink::default();
    let outcome = archive_response_to_memory(&response, &mut sink).unwrap();

    assert!(!outcome.record_ids.is_empty());
    assert_eq!(outcome.record_ids.len(), sink.records.len());
    assert!(sink
        .records
        .iter()
        .all(|r| r.receipt_id == response.receipt.receipt_id));
    assert!(sink.records.iter().all(|r| !r.content_blake3.is_empty()));
    assert!(sink
        .records
        .iter()
        .any(|r| r.archive_reason.contains("semantic")));
}

#[test]
fn semantic_memory_enabled_without_sink_fails_loud_not_silent() {
    let response = compact_context(CompactRequest {
        session_id: "memory-no-sink".into(),
        messages: vec![
            msg(
                "assistant",
                "Decision: this should be archived only with a real sink.",
            ),
            msg("user", "latest"),
        ],
        policy: CompactionPolicy {
            semantic_memory_enabled: true,
            archive_memory_enabled: true,
            target_tokens: 80,
            protect_first_n: 0,
            protect_last_n: 1,
            ..Default::default()
        },
        focus: None,
    })
    .unwrap();

    assert!(response.receipt.semantic_memory_fact_ids.is_empty());
    assert!(response
        .receipt
        .warnings
        .iter()
        .any(|warning| warning.contains("archive requested but no memory sink")));
}