Avoid repeated prompt metadata lookups

docs/roadmap/remediation.md

@@ -21,7 +21,7 @@ resource-oriented profile result and changed post-handoff null fallback are
 deliberately selected compatibility changes, not accidental regressions.
 
 Review evidence below describes the pre-remediation implementation. Completion
-markers record the subsequent corrections.
+markers record the subsequent corrections. Both findings are now addressed.
 
 ## Findings
 
@@ -79,7 +79,14 @@ another implementation path, compatibility field, or new runtime test.
 
 ### R2. Hoist The Prompt Presence Lookup Out Of The Input Loop [P3]
 
-**Status:** Open for consideration. **Affected stage:** 4.
+**Status:** Complete. **Affected stage:** 4.
+
+Completion: `InspectPrompt` fetches the selected presence slice once before
+iterating over inputs. The loop now indexes that slice directly, with no new
+cache or public contract. Existing inherited-presence, captured-content, generic
+JSON/YAML encoding, typed-source, and isolation tests pass with Go 1.27.3 under
+the race detector; `go vet ./...` also passes. No benchmark or implementation-
+coupled lookup-count test was added.
 
 **Location:** [Prompt resource projection](../../internal/configuration/resources.go),
 `InspectPrompt`, lines 77–85, especially `state.promptMetadata[id][i]` at line 81.

internal/configuration/resources.go

@@ -76,9 +76,10 @@ func (state *loaded) InspectPrompt(ctx context.Context, id string) (*PromptResou
 	result := &PromptResource{ID: id, Hash: entry.hash, DefaultProfile: raw.DefaultProfile, Description: raw.Description, SessionID: raw.SessionID}
 	if raw.Inputs != nil {
 		inputs := make([]PromptInputResource, len(raw.Inputs))
+		presence := state.promptMetadata[id]
 		for i, input := range raw.Inputs {
 			inputs[i] = PromptInputResource{Name: input.Name, ContentType: input.ContentType, Description: input.Description}
-			if state.promptMetadata[id][i].required == fieldValue {
+			if presence[i].required == fieldValue {
 				required := input.Required
 				inputs[i].Required = &required
 			}