feat: bootstrap foundation application

apps/server/internal/database/migrations/000003_document_versions.up.sql

@@ -0,0 +1,11 @@
+CREATE TABLE IF NOT EXISTS document_versions (
+    id TEXT PRIMARY KEY,
+    document_id TEXT NOT NULL,
+    hash TEXT NOT NULL,
+    previous_hash TEXT,
+    created_at TEXT NOT NULL,
+    change_summary TEXT,
+    UNIQUE(document_id, hash),
+    FOREIGN KEY(document_id) REFERENCES documents(id) ON DELETE CASCADE
+);
+