Introduce non-generic input acquisition requests

docs/roadmap/implementation.md

@@ -1,6 +1,6 @@
 # Consolidation Implementation Plan
 
-Status: in progress. Stages 1 through 3 are complete; follow Stage 4 through Stage 20 in order.
+Status: in progress. Stages 1 through 4 are complete; follow Stage 5 through Stage 20 in order.
 The target executor is a Luna coding agent working through one end-to-end sprint.
 
 ## Authority, Baseline, And Execution
@@ -237,7 +237,7 @@ load-wide defaults, source-version, and sequence-registration validation into
 shared settings preparation, and removed `selectOptions` plus its validation
 flag from grouped preflight. `GOTOOLCHAIN=local GOPROXY=off go test ./...` passed.
 
-## Stage 4 — Express Input Acquisition With Non-Generic Requests
+## Stage 4 — Express Input Acquisition With Non-Generic Requests (Complete)
 
 **Owners:** new engine `acquisition.go` and existing `load_input.go`.
 
@@ -263,6 +263,13 @@ flag from grouped preflight. `GOTOOLCHAIN=local GOPROXY=off go test ./...` passe
 `Options[T]` or an application type. Call-site and import-worker migration is
 completed by Stages 5–6; temporary non-compilation is acceptable.
 
+Progress notes (2026-10-25): introduced the non-generic acquisition request and
+policy/state/tier records, moved the input-acquisition implementation into
+`acquireInput`, and added the resolved-context handoff field. The focused engine
+test command currently cannot compile because the old assembly callers in
+`load_input.go` and `load_request.go` are scheduled to migrate in Stage 6; test
+verification is deferred until that integration.
+
 ## Stage 5 — Consolidate Import Requests And Default Ownership
 
 **Owners:** engine import entry points, `importTraversal`, `source_version.go`,