Build MVP: campaigns, characters, combat, dice, compendium

- Rules abstraction (5e + pf2e) behind one interface, fully tested
- Pure combat engine: turn-order safe across add/remove/reorder/init-change
- Dexie storage with real cascade deletes + Zod validation on write
- Seedable dice engine with notation parser
- Lazy SRD compendium (code-split), bestiary -> combat
- Strict TS, 54 unit tests, Playwright e2e smoke (all green)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

e2e/smoke.spec.ts

@@ -0,0 +1,59 @@
+import { test, expect } from '@playwright/test';
+
+// Each test starts from a clean IndexedDB so runs are deterministic.
+test.beforeEach(async ({ page }) => {
+  await page.goto('/');
+  await page.evaluate(async () => {
+    indexedDB.deleteDatabase('ttrpg-manager');
+    localStorage.clear();
+  });
+  await page.reload();
+});
+
+test('full core flow: campaign → character → dice → combat → compendium', async ({ page }) => {
+  // --- Campaign ---
+  await expect(page.getByRole('heading', { name: 'Campaigns' })).toBeVisible();
+  await page.getByRole('button', { name: '+ New campaign' }).first().click();
+  await page.getByLabel('').first().waitFor(); // modal open
+  await page.locator('input[data-autofocus]').fill('Curse of Strahd');
+  await page.getByRole('button', { name: 'Create' }).click();
+
+  // Card appears and becomes active
+  await expect(page.getByRole('heading', { name: 'Curse of Strahd' })).toBeVisible();
+
+  // --- Character ---
+  await page.getByRole('link', { name: 'Characters' }).click();
+  await expect(page.getByRole('heading', { name: 'Characters' })).toBeVisible();
+  await page.getByRole('button', { name: '+ New character' }).first().click();
+  await page.locator('input[data-autofocus]').fill('Ireena');
+  await page.getByRole('button', { name: 'Create' }).click();
+  await page.getByRole('link', { name: /Ireena/ }).click();
+
+  // On the sheet: set STR to 16 and expect +3 modifier
+  await page.getByLabel('STR score').fill('16');
+  await expect(page.getByText('+3').first()).toBeVisible();
+
+  // --- Dice ---
+  await page.getByRole('link', { name: 'Dice' }).click();
+  await page.getByRole('button', { name: 'Roll' }).click();
+  // a result total renders (1..20 for default 1d20)
+  await expect(page.locator('text=/= \\d+/')).toBeVisible();
+
+  // --- Combat ---
+  await page.getByRole('link', { name: 'Combat' }).click();
+  await page.getByRole('button', { name: '+ New encounter' }).first().click();
+  await page.locator('input[data-autofocus]').fill('Ambush');
+  await page.getByRole('button', { name: 'Create' }).click();
+  await page.getByLabel('Name').fill('Goblin');
+  await page.getByRole('button', { name: 'Add', exact: true }).click();
+  await expect(page.getByText('Goblin')).toBeVisible();
+  await page.getByRole('button', { name: 'Start combat' }).click();
+  await expect(page.getByText(/Round 1/)).toBeVisible();
+
+  // --- Compendium ---
+  await page.getByRole('link', { name: 'Compendium' }).click();
+  await expect(page.getByText(/results/)).toBeVisible();
+  await page.getByPlaceholder('Search monsters…').fill('goblin');
+  await page.getByRole('button', { name: /^Goblin/ }).first().click();
+  await expect(page.getByRole('heading', { name: 'Goblin', exact: true })).toBeVisible();
+});