feat: complete Epic 0 — foundation migration & infrastructure setup

Stories 0.2-0.5: rename folders→declarations (backend+frontend), configure
Redis for cache/queue/sessions, add foundation database migrations
(permissions, archived_at), replace DeclarationStatus enum with architecture
lifecycle values, create DeclarationObserver for status transition validation
and auto-archive, fix controller status transitions to respect observer rules.

93 tests pass (240 assertions).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

tests/Feature/Folder/FolderTypeTest.php

@@ -1,134 +0,0 @@
-<?php
-
-use App\Models\Client;
-use App\Models\User;
-use App\Models\Workspace;
-
-test('can create vat_monthly folder requiring month', function () {
-    $user = User::factory()->create();
-    $workspace = Workspace::factory()->create();
-    $workspace->users()->attach($user, ['role' => 'owner']);
-    $client = Client::factory()->create(['workspace_id' => $workspace->id]);
-    session(['current_workspace_id' => $workspace->id]);
-
-    $response = $this->actingAs($user)->post(route('folders.store'), [
-        'client_id' => $client->id,
-        'title' => 'TVA Mensuelle Mars 2026',
-        'type' => 'vat_monthly',
-        'period_year' => 2026,
-        'period_month' => 3,
-        'status' => 'draft',
-        'priority' => 'medium',
-    ]);
-
-    $response->assertRedirect();
-    $folder = $client->folders()->where('type', 'vat_monthly')->first();
-    expect($folder)->not->toBeNull();
-    expect($folder->period_month)->toBe(3);
-    expect($folder->period_quarter)->toBeNull();
-});
-
-test('vat_monthly validation fails without month', function () {
-    $user = User::factory()->create();
-    $workspace = Workspace::factory()->create();
-    $workspace->users()->attach($user, ['role' => 'owner']);
-    $client = Client::factory()->create(['workspace_id' => $workspace->id]);
-    session(['current_workspace_id' => $workspace->id]);
-
-    $response = $this->actingAs($user)->post(route('folders.store'), [
-        'client_id' => $client->id,
-        'title' => 'TVA Mensuelle Sans Mois',
-        'type' => 'vat_monthly',
-        'period_year' => 2026,
-        'status' => 'draft',
-        'priority' => 'medium',
-    ]);
-
-    $response->assertSessionHasErrors('period_month');
-});
-
-test('can create vat_quarterly folder requiring quarter', function () {
-    $user = User::factory()->create();
-    $workspace = Workspace::factory()->create();
-    $workspace->users()->attach($user, ['role' => 'owner']);
-    $client = Client::factory()->create(['workspace_id' => $workspace->id]);
-    session(['current_workspace_id' => $workspace->id]);
-
-    $response = $this->actingAs($user)->post(route('folders.store'), [
-        'client_id' => $client->id,
-        'title' => 'TVA Trimestrielle T1 2026',
-        'type' => 'vat_quarterly',
-        'period_year' => 2026,
-        'period_quarter' => 1,
-        'status' => 'draft',
-        'priority' => 'medium',
-    ]);
-
-    $response->assertRedirect();
-    $folder = $client->folders()->where('type', 'vat_quarterly')->first();
-    expect($folder)->not->toBeNull();
-    expect($folder->period_quarter)->toBe(1);
-    expect($folder->period_month)->toBeNull();
-});
-
-test('vat_quarterly validation fails without quarter', function () {
-    $user = User::factory()->create();
-    $workspace = Workspace::factory()->create();
-    $workspace->users()->attach($user, ['role' => 'owner']);
-    $client = Client::factory()->create(['workspace_id' => $workspace->id]);
-    session(['current_workspace_id' => $workspace->id]);
-
-    $response = $this->actingAs($user)->post(route('folders.store'), [
-        'client_id' => $client->id,
-        'title' => 'TVA Trimestrielle Sans Trimestre',
-        'type' => 'vat_quarterly',
-        'period_year' => 2026,
-        'status' => 'draft',
-        'priority' => 'medium',
-    ]);
-
-    $response->assertSessionHasErrors('period_quarter');
-});
-
-test('server rejects old vat type', function () {
-    $user = User::factory()->create();
-    $workspace = Workspace::factory()->create();
-    $workspace->users()->attach($user, ['role' => 'owner']);
-    $client = Client::factory()->create(['workspace_id' => $workspace->id]);
-    session(['current_workspace_id' => $workspace->id]);
-
-    $response = $this->actingAs($user)->post(route('folders.store'), [
-        'client_id' => $client->id,
-        'title' => 'Old VAT',
-        'type' => 'vat',
-        'period_year' => 2026,
-        'status' => 'draft',
-        'priority' => 'medium',
-    ]);
-
-    $response->assertSessionHasErrors('type');
-});
-
-test('vat_monthly nulls quarter field server-side', function () {
-    $user = User::factory()->create();
-    $workspace = Workspace::factory()->create();
-    $workspace->users()->attach($user, ['role' => 'owner']);
-    $client = Client::factory()->create(['workspace_id' => $workspace->id]);
-    session(['current_workspace_id' => $workspace->id]);
-
-    $response = $this->actingAs($user)->post(route('folders.store'), [
-        'client_id' => $client->id,
-        'title' => 'TVA Mensuelle With Quarter',
-        'type' => 'vat_monthly',
-        'period_year' => 2026,
-        'period_month' => 6,
-        'period_quarter' => 2,
-        'status' => 'draft',
-        'priority' => 'medium',
-    ]);
-
-    $response->assertRedirect();
-    $folder = $client->folders()->where('title', 'TVA Mensuelle With Quarter')->first();
-    expect($folder->period_quarter)->toBeNull();
-    expect($folder->period_month)->toBe(6);
-});

tests/Feature/Folder/MediaDownloadTest.php

@@ -1,103 +0,0 @@
-<?php
-
-use App\Models\Client;
-use App\Models\Folder;
-use App\Models\MediaDownload;
-use App\Models\User;
-use App\Models\Workspace;
-use Illuminate\Http\UploadedFile;
-use Illuminate\Support\Facades\Storage;
-
-function setupFolderWithMedia(): array
-{
-    $user = User::factory()->create();
-    $workspace = Workspace::factory()->create();
-    $workspace->users()->attach($user, ['role' => 'owner']);
-    $client = Client::factory()->create(['workspace_id' => $workspace->id]);
-    $folder = Folder::factory()->create([
-        'workspace_id' => $workspace->id,
-        'client_id' => $client->id,
-    ]);
-
-    Storage::fake('public');
-    $file = UploadedFile::fake()->create('document.pdf', 100, 'application/pdf');
-    $media = $folder->addMedia($file)->toMediaCollection('documents');
-
-    return [$user, $workspace, $folder, $media];
-}
-
-test('downloading creates a media download record', function () {
-    [$user, $workspace, $folder, $media] = setupFolderWithMedia();
-    session(['current_workspace_id' => $workspace->id]);
-
-    $this->actingAs($user)->get(route('folders.media.download', [
-        'folder' => $folder,
-        'mediaId' => $media->id,
-    ]));
-
-    $download = MediaDownload::query()
-        ->where('media_id', $media->id)
-        ->where('user_id', $user->id)
-        ->first();
-
-    expect($download)->not->toBeNull();
-    expect($download->downloaded_at)->not->toBeNull();
-});
-
-test('re-downloading updates timestamp without creating duplicates', function () {
-    [$user, $workspace, $folder, $media] = setupFolderWithMedia();
-    session(['current_workspace_id' => $workspace->id]);
-
-    $this->actingAs($user)->get(route('folders.media.download', [
-        'folder' => $folder,
-        'mediaId' => $media->id,
-    ]));
-
-    $firstDownload = MediaDownload::query()
-        ->where('media_id', $media->id)
-        ->where('user_id', $user->id)
-        ->first();
-    $firstTimestamp = $firstDownload->downloaded_at;
-
-    $this->travel(5)->minutes();
-
-    $this->actingAs($user)->get(route('folders.media.download', [
-        'folder' => $folder,
-        'mediaId' => $media->id,
-    ]));
-
-    $count = MediaDownload::query()
-        ->where('media_id', $media->id)
-        ->where('user_id', $user->id)
-        ->count();
-
-    expect($count)->toBe(1);
-
-    $firstDownload->refresh();
-    expect($firstDownload->downloaded_at->gt($firstTimestamp))->toBeTrue();
-});
-
-test('download status is per-user in show endpoint', function () {
-    [$user, $workspace, $folder, $media] = setupFolderWithMedia();
-    $otherUser = User::factory()->create();
-    $workspace->users()->attach($otherUser, ['role' => 'member']);
-    session(['current_workspace_id' => $workspace->id]);
-
-    MediaDownload::query()->create([
-        'media_id' => $media->id,
-        'user_id' => $user->id,
-        'downloaded_at' => now(),
-    ]);
-
-    $response = $this->actingAs($user)->get(route('folders.show', $folder));
-    $response->assertOk();
-    $documents = $response->original->getData()['page']['props']['documents'];
-    $doc = collect($documents)->firstWhere('id', $media->id);
-    expect($doc['is_downloaded'])->toBeTrue();
-
-    $response2 = $this->actingAs($otherUser)->get(route('folders.show', $folder));
-    $response2->assertOk();
-    $documents2 = $response2->original->getData()['page']['props']['documents'];
-    $doc2 = collect($documents2)->firstWhere('id', $media->id);
-    expect($doc2['is_downloaded'])->toBeFalse();
-});