Fix AutoMap when creating a new project controller

[Mamat79]

What changed

• fixes AutoMap when the project has no Companion/OSC controller and the user selects “Create a new controller from the selected profile”
• uses the already validated probe controller UID instead of reading the final controller before it exists
• adds a regression test for explicit controller embedding
• documents validation against the supplied Baxter Dury LiveProfessor project

Root cause

The new-controller branch referenced controller.controller_uid before the final controller export assigned controller, raising UnboundLocalError before any plug-in mapping began.

Validation

• python -m pytest -q — 224 passed
• supplied project: 41 instances / 19 plug-in types mapped successfully
• custom selection: all five Saturn 2 instances excluded, remaining 36 instances mapped successfully
• source .rack2 SHA-256 stayed unchanged in both tests
• Windows EXE and installer rebuilt successfully
• corrected V.2026.4 installed locally; installed EXE hash matches the build

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Preserve the collision-adjusted UID for new controllers

When the project already contains any hardware controller using the profile's stable UID, selecting “Create a new controller” still uses the unadjusted probe UID here. If the collision is with a Companion/OSC controller, create_automapped_project silently selects that existing controller instead of embedding the new one; if it is with another controller type, _controller_from_template adjusts the embedded UID and then rejects it because it no longer matches this value. Use a UID that accounts for all project controllers and pass that same UID to the final export and AutoMap.

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