Add Logbuch: project update blog with admin, media and API

Public archive with sidebar navigation, project pages, month archive,
search and entry pages with image blocks. Admin area for brands,
projects, post types, users, api clients, media and the entry editor
with drag and drop images, preview per audience, scheduling and
publish checks. Read and write API with bearer tokens, audience
scoping, idempotent creation, OpenAPI document and editorial guide.
Magic link login with configurable allowed domains, whole app behind
the session gate. 456 tests including design rule checks.

tests/domain/access-paths.test.ts

@@ -0,0 +1,48 @@
+import { describe, expect, it } from 'vitest'
+import { isOpenPath, loginTarget, requiresSession } from '~/domain/access-paths'
+
+describe('isOpenPath', () => {
+	const open = [
+		'/login',
+		'/api/auth/sign-in/email',
+		'/api/auth/callback/magic-link',
+		'/api/v1/posts',
+		'/api/v1/media/file/2026/07/bild.webp',
+		'/_next/static/chunks/main.js',
+		'/favicon.ico',
+		'/robots.txt',
+	]
+
+	for (const path of open) {
+		it(`lässt ${path} ohne Anmeldung durch`, () => {
+			expect(isOpenPath(path)).toBe(true)
+		})
+	}
+
+	const closed = ['/', '/trakk', '/trakk/2026/07', '/trakk/ein-beitrag', '/search', '/admin', '/admin/entries/new']
+
+	for (const path of closed) {
+		it(`verlangt für ${path} eine Anmeldung`, () => {
+			expect(requiresSession(path)).toBe(true)
+		})
+	}
+
+	it('lässt sich nicht durch einen ähnlichen Anfang austricksen', () => {
+		expect(isOpenPath('/loginversuch')).toBe(false)
+		expect(isOpenPath('/api/v1x/posts')).toBe(false)
+	})
+})
+
+describe('loginTarget', () => {
+	it('merkt sich das gewünschte Ziel', () => {
+		expect(loginTarget('/trakk/ein-beitrag', '')).toBe('/login?next=%2Ftrakk%2Fein-beitrag')
+	})
+
+	it('nimmt die Abfrageparameter mit', () => {
+		expect(loginTarget('/search', '?q=regel')).toBe('/login?next=%2Fsearch%3Fq%3Dregel')
+	})
+
+	it('lässt die Startseite ohne Ziel', () => {
+		expect(loginTarget('/', '')).toBe('/login')
+	})
+})