feat: add generated scene skill platform hardening

docs/superpowers/reports/2026-04-18-g7-multi-endpoint-first-slice-report.md

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+# G7 Multi Endpoint Inventory First Slice Report
+
+> Date: 2026-04-18
+> Scope: `G7` classification and fail-closed safety slice
+
+## Summary
+
+The first `G7` implementation slice is complete.
+
+This round added the `multi_endpoint_inventory` archetype and a repo-local representative fixture for the `计量资产库存统计` boundary family.
+
+The result is intentionally fail-closed: `G7` can now be identified and prevented from falling back into `G1/G1-E`, but runnable aggregation is not implemented yet.
+
+## Assets Updated
+
+1. `src/generated_scene/ir.rs`
+2. `src/generated_scene/analyzer.rs`
+3. `src/generated_scene/generator.rs`
+4. `tests/fixtures/generated_scene/g7_multi_endpoint_inventory/index.html`
+5. `tests/scene_generator_test.rs`
+
+## Behavioral Result
+
+The representative fixture validates:
+
+1. `workflowArchetype = multi_endpoint_inventory`
+2. inventory endpoint count is at least five
+3. inventory endpoint names include `assetStatsQueryMeter`
+4. inventory endpoint names include `assetStatsQueryJlGnModule`
+5. generation fails closed with `multi_endpoint_inventory`
+
+## Validation
+
+Executed:
+
+```powershell
+cargo test --test scene_generator_test -- --nocapture
+cargo test --test scene_generator_p1_family_test -- --nocapture
+cargo test --test scene_generator_family_policy_test -- --nocapture
+cargo test --test scene_generator_canonical_test -- --nocapture
+```
+
+All target regressions passed.
+
+## Result
+
+`G7` is now safely separated from `G1/G1-E` at classification time.
+
+The family remains fail-closed until a formal multi-endpoint inventory aggregation contract is implemented.