diff --git a/tasks/INDEX.md b/tasks/INDEX.md
index fe48ef7..8c71fea 100644
--- a/tasks/INDEX.md
+++ b/tasks/INDEX.md
@@ -97,15 +97,17 @@ Completed and archived: **M0.x (8/8)**, **M1.x (8/8)** — all task files delete
 
 ## 3 — Projections · M2.x
 
-**Status:** In progress · 6/8 done, 2 pending (M2.7, M2.8 gate).
+**Status:** In progress · 6/8 done, 2 pending (M2.7, M2.8 gate). Task files for M2.1-2.6 archived.
 
-M2.1 ✅ (embeddings client: 768-dim batching @32)
-M2.2 ✅ (CNPG Cluster + Database CRD with pgvector 0.7.0)
-M2.3 ✅ (schema + sqlx migrations — M2.3 spec tables, 5 entity types)
-M2.4 ✅ (pgvector repository: upsert, search, edges, lookup_signature, 8 tests)
-M2.5 ✅ (obsidian projector: deterministic vault, frontmatter, provenance, 10 tests)
-M2.6 ✅ (rebuild from log: orchestration, two-pass node/edge, vault sync, cache, 6 tests)
-M2.7 ⬜ (verify edges — edge closure proof)
+M2.1-2.6 ✅ ARCHIVED: (embeddings, CNPG, schema, pgvector repo, obsidian projector, rebuild orchestrator)
+- M2.1 ✅ (embeddings client: 768-dim batching @32)
+- M2.2 ✅ (CNPG Cluster + Database CRD with pgvector 0.7.0)
+- M2.3 ✅ (schema + sqlx migrations — M2.3 spec tables, 5 entity types)
+- M2.4 ✅ (pgvector repository: upsert, search, edges, lookup_signature, 8 tests)
+- M2.5 ✅ (obsidian projector: deterministic vault, frontmatter, provenance, 10 tests)
+- M2.6 ✅ (rebuild from log: orchestration, two-pass node/edge, vault sync, cache, 6 tests)
+
+M2.7 ⬜ (verify edges — edge closure proof) — active task file
 M2.8 gate awaits M2.7.
 
 ## 4 — L2 synthesis and retrieval · M3.x