feat(windows): redesign Windows automation architecture

[JE-Chen]

This Draft PR establishes the Windows automation architecture and implementation roadmap discussed for AutoControlGUI.

It adds docs/windows_automation_architecture.md covering:

• Windows platform-layer module boundaries
• WindowsContext / Window / UIElement / Locator / Input / Process / Clipboard API contracts
• UIA-first deterministic automation strategy
• DPI, multi-monitor and explicit coordinate spaces
• ActionResult + verification direction
• Windows Events and semantic fallback/self-healing roadmap
• Migration rules to preserve existing wrapper/AC_* compatibility
• First implementation wave and PR order (Core → Window → DPI → UIA → Locator → Input → Process → Shell → Verification → integration)
• Acceptance criteria and out-of-scope boundaries

This PR is intentionally documentation/architecture-first. It does not yet replace existing Windows implementations or make breaking API changes. The next implementation PR should start with the Windows Core Contract.

[codacy-production]

Up to standards ✅

🟢 Issues 0 issues

Results:
0 new issues

View in Codacy

_{NEW Get contextual insights on your PRs based on Codacy's metrics, along with PR and Jira context, without leaving GitHub. Enable AI reviewer
TIP This summary will be updated as you push new changes.}

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud