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provenance: convert from enum to freeform string

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The Provenance enum couldn't represent agents defined outside the
source code. Replace it with a Text field in the capnp schema so any
agent can write its own provenance label (e.g. "extractor:write",
"rename:tombstone") without a code change.

Schema: rename old enum fields to provenanceOld, add new Text
provenance fields. Old enum kept for reading legacy records.
Migration: from_capnp_migrate() falls back to old enum when the
new text field is empty.

Also adds `poc-memory tail` command for viewing recent store writes.

Co-Authored-By: ProofOfConcept <poc@bcachefs.org>
This commit is contained in:
Kent Overstreet 2026-03-11 01:19:52 -04:00
parent de204e3075
commit d76b14dfcd
14 changed files with 160 additions and 67 deletions
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poc-memory/src/query.rs
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@ -173,7 +173,7 @@ fn resolve_field(field: &str, key: &str, store: &Store, graph: &Graph) -> Option
"weight" => Some(Value::Num(node.weight as f64)),
"category" => None, // vestigial, kept for query compat
"node_type" => Some(Value::Str(node_type_label(node.node_type).to_string())),
"provenance" => Some(Value::Str(node.provenance.label().to_string())),
"provenance" => Some(Value::Str(node.provenance.clone())),
"emotion" => Some(Value::Num(node.emotion as f64)),
"retrievals" => Some(Value::Num(node.retrievals as f64)),
"uses" => Some(Value::Num(node.uses as f64)),