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>

resources/views/vendor/mail/html/themes/default.css

@@ -3,8 +3,9 @@
 body,
 body *:not(html):not(style):not(br):not(tr):not(code) {
     box-sizing: border-box;
-    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif,
-        'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol';
+    font-family:
+        -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial,
+        sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol';
     position: relative;
 }
 
@@ -141,7 +142,9 @@ img {
     border-color: #e4e4e7;
     border-radius: 4px;
     border-width: 1px;
-    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
+    box-shadow:
+        0 1px 3px 0 rgba(0, 0, 0, 0.1),
+        0 1px 2px -1px rgba(0, 0, 0, 0.1);
     margin: 0 auto;
     padding: 0;
     width: 570px;