feat: general improvements and optimizations (#7)

- Added dry-run functionality to preview changes without modifying files
- Improved pipeline input support and parameter validation
- Enhanced performance with compiled regex patterns and environment variable caching

Author: jonlabelle

.github/copilot-instructions.md

@@ -6,3 +6,4 @@
 - Always write meaningful documentation
 - Refer to the [PSScriptAnalyzerSettings.psd1](../PSScriptAnalyzerSettings.psd1) file for coding standards
 - All path operations must use `Join-Path` and the `-Path` and `-ChildPath` parameters. Do not ever use the `-AdditionalChildPath` parameter because it not support in PowerShell Desktop 5.1.
+- Don't use Unicode characters in output due to issues with Windows PowerShell 5.1 console.

.github/dependabot.yml

@@ -6,8 +6,6 @@ updates:
     schedule:
       interval: monthly
     target-branch: main
-    reviewers:
-      - jonlabelle
     commit-message:
       prefix: 'chore(deps): '
     groups:

.github/workflows/lint-markdown.yml

@@ -31,6 +31,6 @@ jobs:
 
       - uses: DavidAnson/markdownlint-cli2-action@main
         with:
-          config: .markdownlint.json
+          config: .markdownlint-cli2.jsonc
           globs: |
             README.md

.markdownlint-cli2.jsonc

@@ -0,0 +1,67 @@
+{
+  "config": {
+    "MD046": {
+      "style": "fenced"
+    },
+    "MD048": {
+      "style": "backtick"
+    },
+    "MD049": {
+      "style": "consistent"
+    },
+    "MD040": {
+      "allowed_languages": [
+        "bash",
+        "console",
+        "html",
+        "javascript",
+        "json",
+        "markdown",
+        "powershell",
+        "text",
+        "xml",
+        "yaml",
+        "plaintext"
+      ],
+      "language_only": true
+    },
+    "MD003": {
+      "style": "atx"
+    },
+    "MD035": {
+      "style": "---"
+    },
+    "MD013": {
+      "strict": false,
+      "code_blocks": false,
+      "line_length": 1000
+    },
+    "MD024": {
+      "siblings_only": true
+    },
+    "MD029": {
+      "style": "ordered"
+    },
+    "MD044": {
+      "code_blocks": false,
+      "names": [
+        "CommonMark",
+        "JavaScript",
+        "Markdown",
+        "markdown-it",
+        "markdownlint",
+        "markdownlint-cli2",
+        "Node.js"
+      ]
+    },
+    "MD036": {
+      "punctuation": ".,;:!?"
+    },
+    "MD004": {
+      "style": "dash"
+    },
+    "MD033": {
+      "allowed_elements": ["details", "summary", "strong", "br"]
+    }
+  }
+}