first commit

app/Views/categories/form.php

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+<?= $this->extend('layout/main') ?>
+
+<?= $this->section('content') ?>
+<h1 class="h4 mb-3"><?= esc($title) ?></h1>
+
+<div class="card shadow-sm">
+    <div class="card-body">
+        <?php $action = $cat ? site_url('categories/' . $cat['id']) : site_url('categories'); ?>
+        <?= form_open($action) ?>
+            <div class="mb-3">
+                <label class="form-label">Nazwa</label>
+                <input type="text" name="name" class="form-control" required
+                       value="<?= esc(old('name', $cat['name'] ?? '')) ?>">
+            </div>
+            <div class="mb-3">
+                <label class="form-label">Typ</label>
+                <?php $t = old('type', $cat['type'] ?? 'expense'); ?>
+                <select name="type" class="form-select" required>
+                    <option value="income"  <?= $t === 'income'  ? 'selected' : '' ?>>Przychód</option>
+                    <option value="expense" <?= $t === 'expense' ? 'selected' : '' ?>>Wydatek</option>
+                </select>
+            </div>
+            <div class="mb-3">
+                <label class="form-label">Kategoria nadrzędna (opcjonalnie)</label>
+                <?php $p = old('parent_id', $cat['parent_id'] ?? ''); ?>
+                <select name="parent_id" class="form-select">
+                    <option value="">— brak —</option>
+                    <?php foreach ($parents as $pc): ?>
+                        <?php if ($cat && $pc['id'] == $cat['id']) continue; ?>
+                        <option value="<?= $pc['id'] ?>" <?= (string) $p === (string) $pc['id'] ? 'selected' : '' ?>>
+                            <?= esc($pc['indent_label']) ?> (<?= $pc['type'] === 'income' ? 'przychód' : 'wydatek' ?>)
+                        </option>
+                    <?php endforeach; ?>
+                </select>
+            </div>
+            <button type="submit" class="btn btn-primary">Zapisz</button>
+            <a href="<?= site_url('categories') ?>" class="btn btn-link">Anuluj</a>
+        <?= form_close() ?>
+    </div>
+</div>
+<?= $this->endSection() ?>

app/Views/categories/index.php

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+<?= $this->extend('layout/main') ?>
+
+<?= $this->section('content') ?>
+<div class="d-flex justify-content-between align-items-center mb-3">
+    <h1 class="h4 mb-0">Kategorie</h1>
+    <a href="<?= site_url('categories/new') ?>" class="btn btn-primary">+ Nowa kategoria</a>
+</div>
+
+<div class="card shadow-sm">
+    <div class="table-responsive">
+        <table class="table table-hover mb-0 align-middle">
+            <thead class="table-light">
+                <tr>
+                    <th>Nazwa</th>
+                    <th>Typ</th>
+                    <th class="text-end">Akcje</th>
+                </tr>
+            </thead>
+            <tbody>
+            <?php if (empty($categories)): ?>
+                <tr><td colspan="3" class="text-center text-muted py-4">Brak kategorii.</td></tr>
+            <?php else: foreach ($categories as $c): ?>
+                <tr>
+                    <td><?= esc($c['indent_label']) ?></td>
+                    <td>
+                        <?php if ($c['type'] === 'income'): ?>
+                            <span class="badge bg-success">Przychód</span>
+                        <?php else: ?>
+                            <span class="badge bg-danger">Wydatek</span>
+                        <?php endif; ?>
+                    </td>
+                    <td class="text-end">
+                        <a href="<?= site_url('categories/' . $c['id'] . '/edit') ?>" class="btn btn-sm btn-outline-secondary">Edytuj</a>
+                        <a href="<?= site_url('categories/' . $c['id'] . '/delete') ?>" class="btn btn-sm btn-outline-danger"
+                           onclick="return confirm('Usunąć kategorię?')">Usuń</a>
+                    </td>
+                </tr>
+            <?php endforeach; endif; ?>
+            </tbody>
+        </table>
+    </div>
+</div>
+<?= $this->endSection() ?>