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Integrate A1 carrier PCB CAD updates

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- Add pinned STEP-derived DE-9 mechanical measurements and provenance
- Refresh placement, routing, silkscreen, and nominal CAD envelopes
- Document provisional dimensions, assumptions, and validation status
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Commander1024
2026-09-21 12:31:24 +02:00
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docs/agent/current-state.md
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Working memory, not an implementation timeline. Source is authoritative; begin with [code map](code-map.md), [architecture](architecture.md) and [decisions](design-decisions.md).
## Carrier PCB A1 — revised placement and CAD integration
- `hardware/PCB/serial-carrier.kicad_pcb`: routed 82 × 80 mm two-layer draft; 36 × 19 mm top-left notch, ESP32 shifted down for bottom USB access, RS-232 bare PCB front flush with carrier top. Exact ESP32 body/USB/antenna envelope remains pending user measurements; RF reserve is provisional.
- Adafruit STEP metal geometry extracted and validated; provenance/dimensions in `hardware/PCB/db9-mechanical-notes.md`. Flange front sits 1.930 mm inside carrier edge, screw-lock mouths 2.870 mm outside, shell nose 3.870 mm outside. Case wall plane is not yet fixed. Seven board-local Dwgs.User projections added; rerun `add_db9_envelope.py` and `add_device_silkscreen.py` after moving modules.
- Placement PDF and SVG/PNG/3D previews refreshed. Fresh PCB, independent routing, preservation and CAD validators pass: 38/38 connections, 565 segments, 22 vias, 0 physical DRC violations/unrouted, one expected provisional U2 footprint parity warning. Not fabrication-ready; no hardware qualification or Gerbers. Existing project/schematic/library work preserved; board saves must use `SaveBoard(..., True)` and require checking editor lock. Prior A0 preserved in validation backup.
## Dual-stack diagnostics follow-up — implemented, device validation pending
- User explicitly requested IPv6 ping/traceroute/nslookup on all surfaces after accepting Phase12. Shared `network_console.*` now supports one `-4`/`-6` anywhere after command, preserves count/hop bounds, root and `wifi` aliases. Default probes try IPv4 then IPv6 on resolution failure only; nslookup performs A+AAAA queries separately (one selected address/family), displays unscoped link-local records. Link-local probes require ESP-local `%sta`/`%ap`/index/name; no client-interface guess or IPv4-mapped fallback. Help/completion updated; permissions unchanged.