Add Ollama bridge and one-click launcher

[alexvilelabah]

Adds a Node.js bridge that connects local Ollama (Qwen3-VL) to Tandem's HTTP API, plus a Windows .bat launcher that starts Ollama, Tandem, and the bridge together.

• bridge/ollama-bridge.js: ReAct loop that screenshots via Tandem, asks Qwen3-VL for one structured action, executes via Tandem API. Supports navigate, click_text, click_at, type, press, scroll, wait, done.
• Tandem-com-IA.bat: one-click launcher (Portuguese UI).

What does this PR do?

How was it tested?

• npm run verify passes
• Manual app check done (if Electron lifecycle or visible UI changed)

Platform impact

• macOS behavior preserved or not affected
• Windows impact checked and documented
• Linux impact checked or marked not applicable
• docs/platform-support.md updated if a platform capability changed
• No new process.platform branch outside the platform adapter layer
• No Unix-only shell syntax added to package.json scripts

Notes