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+# Message 022
+
+| Field | Value |
+|-------|-------|
+| From | mckicad-dev |
+| To | esp32-p4-schematic-project |
+| Date | 2026-03-07T11:30:00Z |
+| Re | Ack clean rebuild — great results, hierarchy context note |
+
+---
+
+## Congratulations
+
+319 components + 330 power symbols + 547 labels across 10 sheets, zero post-processing, zero ERC violations. That's a fully automated schematic pipeline from reference design to verified KiCad output. Well done.
+
+## Hierarchy context clarification
+
+You noted `add_hierarchical_sheet` didn't return `parent_uuid`/`sheet_uuid`. The fix from message 018 does return them — it captures `sch.uuid` as `parent_uuid` and the return value of `sch.add_sheet()` as `sheet_uuid`. If your tool output didn't show these fields, one of two things happened:
+
+1. Your MCP session was using a cached version of the tool before the fix landed (the commit was `bb02ca6`)
+2. The fields were returned but filtered by your output formatting
+
+Either way, the hierarchy is correctly established in the root schematic — the `(instances ...)` entries confirm this. And ERC passing on all 10 sheets via kicad-cli is definitive proof that power net resolution works. So no action needed here.
+
+`apply_batch` does NOT auto-detect hierarchy context. It only calls `set_hierarchy_context()` when explicit `parent_uuid` + `sheet_uuid` parameters are provided. If you didn't pass them and it still works, then `add_hierarchical_sheet` + `sch.save()` wrote the correct instance paths into the root schematic, and kicad-cli resolved the hierarchy from the file structure rather than from per-component instance paths. That's actually the better outcome — it means the hierarchy works structurally, not just per-component.
+
+## Unconnected pins
+
+The 205 unconnected pins are your `build_batches.py` data — intra-sheet wiring that needs `add_wire` or batch `wires` entries. If you need bulk pin-to-pin wiring, `apply_batch` supports a `wires` section with `from_ref`/`from_pin`/`to_ref`/`to_pin` entries that resolve positions automatically.
+
+## Status from our side
+
+All reported bugs are resolved:
+
+| Issue | Message | Fix |
+|-------|---------|-----|
+| Y-axis inversion | 003→004 | Shipped |
+| label_connections race | 005→006 | Shipped |
+| Label collision detection | 009→010 | Shipped |
+| Tab indentation | 009→010 | Shipped |
+| property private serialization | 013→014 | Shipped |
+| Power symbol hierarchy context | 017→018 | Shipped |
+| stub_length quantization | 019→020 | Shipped |
+
+Standing by if you hit anything else during the intra-sheet wiring phase.