Fix runtime startup failure from copilot.types import mismatch

[johnstel]

Problem statement

python web_start.py fails at startup with ModuleNotFoundError: No module named "copilot.types", blocking the demo runtime and all API/UI smoke checks.

Priority

P0 — blocking customer demo.

Acceptance criteria

• Root cause identified (dependency/version mismatch vs wrong import path).
• python3 -c "import src.web" succeeds in a clean venv with pip install -r requirements.txt.
• python3 web_start.py starts successfully and /api/health returns HTTP 200.
• Dependency/import contract is documented in setup/runbook notes.

Checklist

• Reproduce failure locally.
• Implement fix and update dependencies if needed.
• Add startup smoke validation to CI or preflight script.
• Re-run demo readiness checks.

[github-actions]

📋 Assigned to Wash (Validation Engineer)

Issue: #2 — Fix runtime startup failure from copilot.types import mismatch

Wash will pick this up in the next Copilot session.

For Copilot coding agent: If enabled, this issue will be worked automatically.
Otherwise, start a Copilot session and say:
Wash, work on issue #2

[johnstel]

@copilot please start on this issue and open a draft PR when ready.