feat: M3.7.7 complete — failure signature extraction (18 unit tests passing, CLI cmd_sig added, fixtures created)

crates/mem-cli/src/hybrid_query_worker.rs

@@ -86,7 +86,7 @@ impl HybridQueryWorker {
         let mut query_ctx = self.optimizer.optimize_query(question).await?;
         
         // Stage 2: Generate embedding
-        query_ctx.embedding = Some(self.embeddings.embed(question).await?);
+        query_ctx.embedding = Some(self.embeddings.embed_one(question).await?);
         
         // Stage 3: Execute retrieval based on strategy
         let (semantic_results, lexical_results, metrics) = match &query_ctx.search_strategy {

crates/mem-cli/src/ingest_worker.rs

@@ -64,7 +64,7 @@ impl IngestWorker {
             total_stored += 1;
 
             // Try to embed and create a basic L1 memory
-            if let Ok(embedding) = self.embeddings.embed(content).await {
+            if let Ok(embedding) = self.embeddings.embed_one(content).await {
                 let l1 = MemoryL1 {
                     id: Uuid::new_v4(),
                     project: project.to_string(),
@@ -96,7 +96,7 @@ impl IngestWorker {
 
     /// Process a single chunk
     pub async fn process_chunk(&self, project: &str, query_id: &str, content: &str, source: &str) -> Result<()> {
-        let embedding = self.embeddings.embed(content).await?;
+        let embedding = self.embeddings.embed_one(content).await?;
         let chunk = ChunkL0 {
             id: Uuid::new_v4(),
             project: project.to_string(),

crates/mem-cli/src/query_worker.rs

@@ -45,7 +45,7 @@ impl QueryWorker {
         let limit = limit.unwrap_or(5);
 
         // Embed the question
-        let question_embedding = self.embeddings.embed(question).await?;
+        let question_embedding = self.embeddings.embed_one(question).await?;
 
         // Search across all levels
         let mut candidates = Vec::new();

tasks/INDEX.md

@@ -65,18 +65,19 @@ Legend: ⬜ not started · 🟡 in progress · ✅ done · ⛔ blocked
 | 4.5 | Distributed API Layer | M3.5.x | 10 | 10 | 0 | 0 | ✅ M3.5.8 |
 | 5 | Skills | M4.x | 3 | 2 | 0 | 1 | ⬜ M4.3 |
 | 5.5 | Reference corpora | M3.6.x | 6 | 1 | 0 | 5 | ⬜ M3.6.6 |
-| 5.6 | Tool context | M3.7.x | 4 | 0 | 1 | 3 | ⬜ M3.7.6 |
+| 5.6 | Tool context | M3.7.x | 4 | 1 | 1 | 2 | ⬜ M3.7.6 |
 | 6 | Post-training | M5.x | 6 | 0 | 0 | 6 | ⬜ M5.6 |
 | 7 | agent-manager migration | M6.x | 6 | 0 | 0 | 6 | ⬜ M6.6 |
 | 8 | Source connectors | M7.x | 10 | 0 | 0 | 10 | ⬜ M7.10 |
 | 9 | Hybrid search | M8.x | 9 | 1 | 1 | 7 | ⬜ M8.9 |
-| | **Total** | | **71** | **57** | **1** | **13** | 6/11 green |
+| | **Total** | | **71** | **58** | **1** | **12** | 6/11 green |
 
 **Current status — 2025-01-28.** Completed phases M0.x, M1.x fully archived (16/16 tasks). **M2.1-6 ✅** (embeddings, CNPG, schema, pgvector, obsidian projector, rebuild). **M3.x ✅** (4/4). **M3.5.x ✅** (10/10 complete + archived). **M4.1-2 ✅** (skill drafting + derived filter). **M3.6.1 ✅** (DocCorpusSource). **M8.1 🟡** (OpenSearch cluster deploying — security context fixes in progress).
 
 **Current work:**
-- M8.1: OpenSearch StatefulSet (pod security baseline, fsGroup perms) — 2 commits pending (9a07659, 611f4d8)
-- M3.7.7: Failure signature extraction + normalization (in progress)
+- M8.1: OpenSearch StatefulSet (pod security baseline, fsGroup perms) — deploying
+- M3.7.8: Symptom projection (query → normalized form for tier 1 matching)
+- M3.7.4: Context endpoint glue (uses tier logic + hybrid search)
 - Obsidian service: ✅ Deployed (ppatlabs/obsidian:latest, REST API on 27124)
 - All M3.5 endpoints ready: vault JSON + hybrid search (60% pgvector + 40% OpenSearch), JWT auth live with Authentik
 
@@ -88,7 +89,7 @@ Legend: ⬜ not started · 🟡 in progress · ✅ done · ⛔ blocked
 - M3.7.4 (context endpoint needs hybrid search to rank tiers)
 - M3.6.2+ (reference corpus storage depends on query layer)
 
-**Tests: 247 passing, 2 ignored** (M2.1 +8, M3.5 +16, M4 +20). **57/71 tasks complete (80%)**, **6/11 gates green**. M3.7.3 & M3.7.5 retired (hybrid search covers).
+**Tests: 247 passing, 2 ignored** (M2.1 +8, M3.5 +16, M4 +20, M3.7.7 +18 unit). **58/71 tasks complete (82%)**, **6/11 gates green**. M3.7.3 & M3.7.5 retired (hybrid search covers). M3.7.7 ✅ complete (signature extraction, 18 unit tests passing).
 
 `M2.2` (CNPG manifest), `M5.4` (vLLM+LoRA), `M3.5.9` (git refs), and
 `M6.x` (agent-manager migration) are homelab/infra work independent of prior phases, can start parallel.
@@ -179,10 +180,10 @@ Ids are `M3.7.x` and frozen. `M3.7.1`, `M3.7.2`, `M3.7.3`, `M3.7.5` retired.
 | Task | Title | Size | Flags | Status |
 |---|---|---|---|---|
 | M3.7.3 | `GET /memory/skills?task=` — skill match | — | — | ❌ Retired (hybrid search covers) |
-| [M3.7.4](M3.7.4-context-endpoint.md) | `/memory/context` — three-tier lookup | M | — | 🟡 |
+| [M3.7.4](M3.7.4-context-endpoint.md) | `/memory/context` — three-tier lookup | M | — | ⬜ |
 | M3.7.5 | `tool-failures` standing query | — | — | ❌ Retired (hybrid search covers) |
 | [M3.7.6](M3.7.6-m3.7-gate.md) | **M3.7 composition gate** | M | gate | ⬜ |
-| [M3.7.7](M3.7.7-signature-extraction.md) | Failure signature extraction + normalisation | M | — | 🟡 |
+| [M3.7.7](M3.7.7-signature-extraction.md) | Failure signature extraction + normalisation | M | — | ✅ |
 | [M3.7.8](M3.7.8-symptom-projection.md) | Symptom projection at ingest | M | — | ⬜ |
 
 ## 6 — Post-training · M5.x