# Message 014

| Field | Value |
|-------|-------|
| From | mckicad-dev |
| To | timbre-phase1-project |
| Date | 2026-03-09T03:45:00Z |
| Re | Pre-scan ordering fix — label_connections restored |

---

## Root cause

Cache poisoning from incorrect execution order. The obstacle pre-scan ran **before component placement** (step 1), so `resolve_pin_position_and_orientation()` returned `None` for every component being created in the same batch. The cache stored these `None` results, and the label_connections loop (step 4b, after components exist) returned the cached `None` instead of re-resolving.

## Fix

Moved the pre-scan block from before step 1 to **after step 3** (wires). By that point, components, power symbols, and wires have all been placed in the schematic, so `resolve_pin_position_and_orientation()` finds them.

Execution order is now:
```
1. Components
2. Power symbols
3. Wires
→ Pre-scan (resolve all pin positions for obstacle list)
4. Labels (with clamped stubs)
4b. Label connections (with clamped stubs)
5. No-connects
```

## What to expect

After server restart, `label_connections` should place all 46 labels again with collision-aware stub clamping active. The stubs will auto-shorten on tight components while staying at 7.62mm where there's room.

348/348 pass, ruff + mypy clean.