chore(docs): delete stale mid-delivery markdown

AGENTS.md

@@ -157,8 +157,7 @@ unauthorized external action after completing independent, authorized work.
   production behavior. Wire it now or omit it truthfully.
 - Comments and docs explain invariants and why; remove narration, stale PR
   language, and superseded plan authority. `00-plan-set-index.md` is the sole
-  roadmap precedence; `NEXT.md` records current outcomes only, while historical
-  plans and benchmarks are archival.
+  roadmap precedence; historical plans and benchmarks are archival.
 - Name production modules, APIs, tests, scripts, and CI jobs for durable product
   capabilities, not PR numbers, milestones, phases, or temporary gates. Keep
   PR/milestone labels only in clearly archival plans and benchmark provenance.

docs/V2-OPERATING-MODEL.md

@@ -4,9 +4,8 @@ This is a concise operator and contributor summary of final-V2 storage, scope,
 host ingestion, and retrieval. The
 [V2 roadmap](plans/tracedecay-v2/00-plan-set-index.md) is the sole authority for
 precedence, rejected mechanisms, delivery order, and acceptance; its numbered
-plans own detailed behavior, and
-[`NEXT.md`](plans/tracedecay-v2/NEXT.md) reports current delivery status.
-Runtime status remains the truth for capabilities not yet delivered.
+plans own detailed behavior. Runtime status remains the truth for capabilities
+not yet delivered.
 
 ## Authorities