Update .gitignore and README.md for CODESYS MCP project. Added entries to .gitignore for VSIX files and VS Code settings. Expanded README to include architecture, components, deployment instructions, and details about the Cursor extension.

python_scripting/what-you-can-do.md

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+# What You Can Do with Python in CODESYS
+
+Python in CODESYS is mainly for **engineering automation** (IDE/project automation), not for PLC runtime logic execution.
+
+## Typical use cases
+
+- **Project scaffolding**
+  - Create project structures, folders, and naming templates automatically.
+- **Bulk edits**
+  - Create or modify many POUs/objects consistently.
+- **Consistency checks**
+  - Enforce naming conventions, library versions, and structure rules.
+- **Build/export automation**
+  - Trigger exports and produce repeatable build artifacts.
+- **Documentation generation**
+  - Extract project metadata and generate docs/reports.
+- **Pre-release validation**
+  - Run scripted checks before handing over a project.
+
+## Practical examples
+
+- Generate standard folder trees and placeholder POUs for new machines.
+- Scan all variables and report naming/style violations.
+- Export project data for review and commit audit trails.
+- Produce release notes from project metadata.
+
+## What Python in CODESYS is NOT
+
+- Not a replacement for IEC 61131-3 application logic running on the PLC.
+- Not typically used for hard real-time control loops on the target runtime.
+
+## Good practices
+
+- Keep scripts idempotent where possible (safe to run multiple times).
+- Add a `dry-run` mode for scripts that change project data.
+- Write action logs (what changed, where, and when).
+- Use one script per purpose (small, focused scripts are easier to maintain).
+- Test against project copies before production use.
+
+## Suggested first automation tasks
+
+1. A read-only project inventory script (devices, POUs, libraries).
+2. A naming-convention checker script.
+3. A release/export helper script.
+
+These three give immediate value while keeping risk low.