Prototype with single host server and no admin panel (#2)

Reviewed-on: wrenn/sandbox#2
Co-authored-by: pptx704 <rafeed@omukk.dev>
Co-committed-by: pptx704 <rafeed@omukk.dev>

db/migrations/20260311224925_snapshots.sql

@@ -0,0 +1,14 @@
+-- +goose Up
+
+CREATE TABLE templates (
+    name         TEXT PRIMARY KEY,
+    type         TEXT NOT NULL DEFAULT 'base',        -- 'base' or 'snapshot'
+    vcpus        INTEGER,
+    memory_mb    INTEGER,
+    size_bytes   BIGINT NOT NULL DEFAULT 0,
+    created_at   TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+-- +goose Down
+
+DROP TABLE templates;