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>

hooks/pre-commit

@@ -0,0 +1,26 @@
+#!/bin/bash
+
+# Run Pint on staged PHP files before committing.
+# Fixes formatting in-place and re-stages the corrected files.
+
+STAGED_PHP=$(git diff --cached --name-only --diff-filter=ACM | grep '\.php$')
+
+if [ -z "$STAGED_PHP" ]; then
+    exit 0
+fi
+
+# Check that Pint is installed
+if [ ! -x "./vendor/bin/pint" ]; then
+    echo "Error: laravel/pint is not installed. Run 'composer install' first."
+    exit 1
+fi
+
+echo "Running Pint on staged PHP files..."
+./vendor/bin/pint $STAGED_PHP
+
+# Re-stage any files that Pint modified
+for FILE in $STAGED_PHP; do
+    if [ -f "$FILE" ]; then
+        git add "$FILE"
+    fi
+done