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add position field to capnp schema

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Position was only in the bincode cache (serde field) — it would
be lost on cache rebuild from capnp logs. Now persisted in the
append-only log via ContentNode.position @19.

Also fixes journal-tail sorting to extract dates from content
headers, falling back to key-embedded dates.
This commit is contained in:
ProofOfConcept 2026-02-28 23:15:10 -05:00
parent da10dfaeb2
commit f20ea4f827
2 changed files with 5 additions and 1 deletions
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3
schema/memory.capnp
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@ -31,6 +31,9 @@ struct ContentNode {
# Spaced repetition
lastReplayed @17 :Float64; # unix epoch
spacedRepetitionInterval @18 :UInt32; # days: 1, 3, 7, 14, 30
# Section ordering within a file
position @19 :UInt32; # 0 = file-level, 1+ = section index
}
enum NodeType {

3
src/capnp_store.rs
View file

@ -1106,7 +1106,7 @@ fn read_content_node(r: memory_capnp::content_node::Reader) -> Result<Node, Stri
state_tag: read_text(r.get_state_tag()),
last_replayed: r.get_last_replayed(),
spaced_repetition_interval: r.get_spaced_repetition_interval(),
position: 0,
position: r.get_position(),
community_id: None,
clustering_coefficient: None,
schema_fit: None,
@ -1161,6 +1161,7 @@ fn write_content_node(mut b: memory_capnp::content_node::Builder, node: &Node) {
b.set_state_tag(&node.state_tag);
b.set_last_replayed(node.last_replayed);
b.set_spaced_repetition_interval(node.spaced_repetition_interval);
b.set_position(node.position);
}
fn read_relation(r: memory_capnp::relation::Reader) -> Result<Relation, String> {