From b9d20d23d1b1bbb0e6e3df3d3cce45937276ace9 Mon Sep 17 00:00:00 2001
From: altair823 <dlsrks0734@gmail.com>
Date: Sat, 30 May 2026 10:31:07 +0000
Subject: [PATCH] feat(config): ingest.expansion.embed_aliases flag (default
 off)

---
 crates/kebab-config/src/lib.rs | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/crates/kebab-config/src/lib.rs b/crates/kebab-config/src/lib.rs
index 34ca1ba..568ff45 100644
--- a/crates/kebab-config/src/lib.rs
+++ b/crates/kebab-config/src/lib.rs
@@ -649,6 +649,8 @@ pub struct IngestExpansionCfg {
     pub max_aliases_per_chunk: usize,
     /// Prompt template version tag.
     pub prompt_version: String,
+    /// Whether alias embeddings are stored as separate dense vectors.
+    pub embed_aliases: bool,
 }
 
 impl Default for IngestExpansionCfg {
@@ -658,6 +660,7 @@ impl Default for IngestExpansionCfg {
             model: String::new(),
             max_aliases_per_chunk: 8,
             prompt_version: "expansion-v1".to_string(),
+            embed_aliases: false,
         }
     }
 }
@@ -1161,6 +1164,9 @@ impl Config {
                 "KEBAB_INGEST_EXPANSION_PROMPT_VERSION" => {
                     self.ingest.expansion.prompt_version = v.clone();
                 }
+                "KEBAB_INGEST_EXPANSION_EMBED_ALIASES" => {
+                    self.ingest.expansion.embed_aliases = parse_bool(v);
+                }
 
                 // Unknown KEBAB_* keys are silently ignored — see
                 // `env_unknown_key_is_ignored` test.
@@ -1911,6 +1917,20 @@ max_context_tokens = 8000
         assert_eq!(c.ingest.expansion.max_aliases_per_chunk, 12);
         assert_eq!(c.ingest.expansion.prompt_version, "expansion-v2");
     }
+
+    #[test]
+    fn embed_aliases_defaults_off() {
+        let cfg = Config::defaults();
+        assert!(!cfg.ingest.expansion.embed_aliases);
+    }
+
+    #[test]
+    fn embed_aliases_env_override() {
+        let mut env = HashMap::new();
+        env.insert("KEBAB_INGEST_EXPANSION_EMBED_ALIASES".into(), "true".into());
+        let c = Config::defaults().apply_env(&env);
+        assert!(c.ingest.expansion.embed_aliases);
+    }
 }
 
 #[cfg(test)]