feat: auto-create custom fields, add try/catch coverage, PHPDoc, and Pint formatting

- Auto-create 'Initial Operating System' and 'Initial SSH Key' custom fields
  via Database::ensureCustomFields() on module load, eliminating the manual
  modify.sql step
- Delete modify.sql (no longer needed)
- Add try/catch blocks around every DB operation and API call across all PHP
  files per CLAUDE.md error handling rules
- Add comprehensive PHPDoc to all classes, methods, and properties
- Set up Laravel Pint (laravel/pint) with Laravel-style preset for consistent
  code formatting across the codebase
- Add git pre-commit hook (hooks/pre-commit) that runs Pint on staged PHP
  files, auto-installed via Composer post-install/post-update scripts
- Simplify README installation to a single copy-paste command

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

pint.json

@@ -0,0 +1,24 @@
+{
+    "preset": "laravel",
+    "rules": {
+        "declare_strict_types": false,
+        "blank_line_before_statement": {
+            "statements": ["return", "throw", "try"]
+        },
+        "concat_space": {
+            "spacing": "one"
+        },
+        "ordered_imports": {
+            "sort_algorithm": "alpha"
+        },
+        "single_quote": true,
+        "no_unused_imports": true,
+        "trailing_comma_in_multiline": {
+            "elements": ["arrays", "arguments"]
+        }
+    },
+    "exclude": [
+        "vendor",
+        "templates"
+    ]
+}