Fix wiki pages name extraction and description handling

[Copilot]

Wiki pages were incorrectly capturing multiline content as the name (e.g., "Getting Started This wiki page explains..." instead of "Getting Started"), and descriptions were being lost entirely.

Changes

• Tag.ts: Use single-line regex patterns ([^\n\r\u2028\u2029]+) for non-rich tags to prevent multiline capture
• Tags.ts: Preserve newlines for alias tags so Tag.process can correctly extract first-line-only arguments
• WikiAliasTag.ts: New specialized alias that extracts name from first line and description from subsequent lines
• CategoryProject.ts: Use WikiAliasTag instead of standard alias for wiki category

Example

-- @wiki Getting Started
-- This wiki page explains how to get started.
--
-- @header Introduction
-- @text Welcome to the docs.

Before:

{
  "name": "Getting Started This wiki page explains how to get started.",
  "description": undefined,
  "content": [...]
}

After:

{
  "name": "Getting Started",
  "description": "This wiki page explains how to get started.",
  "content": [...]
}

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• dl.deno.land
  • Triggering command: /usr/bin/curl curl -s REDACTED (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Fix wiki pages</issue_title>
<issue_description>The wiki page is not being displayed properly:

-- @wiki Example UI: 3D2D Test UI

-- @header CNUI Example: 3D2D Test UI
-- @text This example shows how to create and populate a 3D2D CNUI panel infront of the player.

-- @code
concommand.Add("cnui_test_3d2d", function()

end)
-- @code

This page is only displaying the first header, and also is adding () on the end like this "Example UI: 3D2D Test UI()"
There is no text displayed and the code block is not there either

It should be showing the header, then the text element, then the code block element</issue_description>

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

• Fixes Fix wiki pages #13

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