Add phone login support and member import functionality

Features:
- Support login via phone number or email (LoginRequest)
- Add members:import-roster command for Excel roster import
- Merge survey emails with roster data

Code Quality (Phase 1-4):
- Add database locking for balance calculation
- Add self-approval checks for finance workflow
- Create service layer (FinanceDocumentApprovalService, PaymentVerificationService)
- Add HasAccountingEntries and HasApprovalWorkflow traits
- Create FormRequest classes for validation
- Add status-badge component
- Define authorization gates in AuthServiceProvider
- Add accounting config file

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

app/Traits/HasApprovalWorkflow.php

@@ -0,0 +1,135 @@
+<?php
+
+namespace App\Traits;
+
+use App\Models\User;
+
+/**
+ * Trait for models with multi-tier approval workflows.
+ *
+ * Usage:
+ * 1. Add `use HasApprovalWorkflow;` to your model
+ * 2. Define STATUS_* constants for each approval stage
+ * 3. Define STATUS_REJECTED constant
+ * 4. Override methods as needed for custom approval logic
+ */
+trait HasApprovalWorkflow
+{
+    /**
+     * Check if document/payment is rejected
+     */
+    public function isRejected(): bool
+    {
+        return $this->status === static::STATUS_REJECTED;
+    }
+
+    /**
+     * Check if document/payment is pending (initial state)
+     */
+    public function isPending(): bool
+    {
+        return $this->status === static::STATUS_PENDING;
+    }
+
+    /**
+     * Check if self-approval is being attempted
+     * Prevents users from approving their own submissions
+     *
+     * @param User|null $user The user attempting to approve
+     * @param string $submitterField The field containing the submitter's user ID
+     */
+    protected function isSelfApproval(?User $user, string $submitterField = 'submitted_by_user_id'): bool
+    {
+        if (! $user) {
+            return false;
+        }
+
+        $submitterId = $this->{$submitterField};
+
+        return $submitterId && $submitterId === $user->id;
+    }
+
+    /**
+     * Get the human-readable status label
+     * Override in model for custom labels
+     */
+    public function getStatusLabelAttribute(): string
+    {
+        return ucfirst(str_replace('_', ' ', $this->status));
+    }
+
+    /**
+     * Check if approval can proceed based on current status
+     *
+     * @param string $requiredStatus The status required before this approval
+     * @param User|null $user The user attempting to approve
+     * @param bool $checkSelfApproval Whether to check for self-approval
+     */
+    protected function canProceedWithApproval(
+        string $requiredStatus,
+        ?User $user = null,
+        bool $checkSelfApproval = true
+    ): bool {
+        if ($this->status !== $requiredStatus) {
+            return false;
+        }
+
+        if ($checkSelfApproval && $this->isSelfApproval($user)) {
+            return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * Get the rejection details
+     */
+    public function getRejectionDetails(): ?array
+    {
+        if (! $this->isRejected()) {
+            return null;
+        }
+
+        return [
+            'reason' => $this->rejection_reason ?? null,
+            'rejected_by' => $this->rejectedBy ?? null,
+            'rejected_at' => $this->rejected_at ?? null,
+        ];
+    }
+
+    /**
+     * Check if model can be rejected
+     * Default: can reject if not already rejected
+     */
+    public function canBeRejected(): bool
+    {
+        return ! $this->isRejected();
+    }
+
+    /**
+     * Get the next approver role required
+     * Override in model to implement specific logic
+     */
+    public function getNextApproverRole(): ?string
+    {
+        return null;
+    }
+
+    /**
+     * Get approval history
+     * Returns array of approval stages that have been completed
+     */
+    public function getApprovalHistory(): array
+    {
+        $history = [];
+
+        // This should be overridden in each model to provide specific fields
+        // Example structure:
+        // [
+        //     ['stage' => 'cashier', 'user' => User, 'at' => Carbon],
+        //     ['stage' => 'accountant', 'user' => User, 'at' => Carbon],
+        // ]
+
+        return $history;
+    }
+}