feat: add generated scene skill platform hardening

docs/superpowers/reports/2026-04-19-g3-export-plan-closure-report.md

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+# G3 Export Plan Closure Report
+
+> Date: 2026-04-19
+> Parent Plan: `docs/superpowers/plans/2026-04-19-g3-export-plan-closure-plan.md`
+> Parent Route: `Route 2: G3 / paginated_enrichment`
+
+## Scope
+
+This report closes the bounded `G3` export-plan subgroup:
+
+`paginated_enrichment + g3_export_plan + export_plan`
+
+The implementation only recovered missing export-plan evidence. It did not continue into residual Route 2 closure work.
+
+## Implementation Slice
+
+The bounded slice was implemented in:
+
+1. `src/generated_scene/analyzer.rs`
+2. `tests/scene_generator_test.rs`
+
+The recovery logic now recognizes `exportWord`-style export signals as valid `G3` export evidence, allowing export-plan closure without relaxing any workflow gate.
+
+## Bounded Validation
+
+Validated scene:
+
+1. `sweep-002-95598-12398`
+
+## Before / After
+
+1. `sweep-002-95598-12398`
+   Before: `fail-closed / C / exportPlan = null`
+   After: `pass / A / exportPlan.entry = exportWord`
+
+The failed gates that previously remained:
+
+1. `workflow_contract_complete: export_plan`
+2. `workflow_complete_for_archetype: export_plan`
+3. `g3_export_path_identified: g3_export_plan`
+
+were eliminated by the bounded export evidence recovery slice.
+
+## Coverage Delta
+
+Fixed input count:
+
+1. before: `1`
+2. resolved by this plan: `1`
+3. residual after this plan: `0`
+
+## Route 2 Residual
+
+After the enrichment-request closure plan and this export-plan closure plan:
+
+1. the targeted enrichment subgroup has been resolved
+2. the targeted export subgroup has been resolved
+3. residual Route 2 work, if any, must be handled under the separate residual-contract child plan
+
+## Completion
+
+This child plan is complete because:
+
+1. the fixed export-plan subgroup count is lower
+2. bounded rerun was completed
+3. stable `G3` canonical tests were preserved
+
+## Stop Statement
+
+This report closes the export-plan child plan.
+
+Do not continue into Route 2 residual closure under this plan.