Replace Unicode emojis with ASCII in installation scripts

[Copilot]

Windows PowerShell renders Unicode emojis and box-drawing characters as "?????", breaking installer output readability.

Changes

• install.ps1: Replace Unicode characters with ASCII equivalents

  • ✓ → [OK], ✗ → [ERROR], ⚠ → [WARNING], ▶ → [>], ℹ → [INFO]
  • Box-drawing (═╔╗╚╝║) → =
  • Emojis (🎉📖🐛🌐) → text labels [DOCS], [BUGS], [WEB]

• install.sh: Apply same replacements for consistency across platforms

Example

Before:

═══════════════════════════════════════════════════════
✓ Python 3.14.0 found (py)
✗ Failed to install package

After:

=======================================================
[OK] Python 3.14.0 found (py)
[ERROR] Failed to install package

Original prompt

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This section details on the original issue you should resolve

<issue_title>Install issue</issue_title>
<issue_description>PS D:\repos\gima-datawarehouse-brk-mutaties> iwr -useb https://raw.githubusercontent.com/ITlusions/ITLAuth/main/install.ps1 | iex

?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????
ITLAuth Zero-Click Installer
ITlusions Authentication Suite
?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????

??? Running as Administrator

??? Checking Python installation...
??? Python 3.14.0 found (py)
??? Checking pip installation...
??? pip found

??? Installing itl-kubectl-oidc-setup...
ERROR: Could not find a version that satisfies the requirement itl-kubectl-oidc-setup (from versions: none)
ERROR: No matching distribution found for itl-kubectl-oidc-setup
??? Failed to install package
??? Try manually: py -m pip install itl-kubectl-oidc-setup

??? Installation failed: package installation error</issue_description>

<agent_instructions>No emojies :D</agent_instructions>

Comments on the Issue (you are @copilot in this section)

• Fixes Install issue #9

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