Promote as a real deployment; version state and scope dropdowns

Turns promotion into a first-class deployment (action='promote') so it lands
in the deployments UI with before/after content, per-server restart tracking,
and one-click rollback. Non-beta matching-scope servers get restart_state=
pending so the existing sweep drains and restarts them the same way drift does.

Also adds a per-version state (untested/tested/test-failed) so the upload
flow can visibly signal that a beta must land before promotion, and swaps
the scope-value text box for game/map dropdowns populated from the fleet.
Beta rollback at ready-promote is now labelled Reject and marks the version
test-failed.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/routes/api/scripts/+server.ts

@@ -32,6 +32,7 @@ export async function GET() {
                       version: versions[0].version,
                       sha256: versions[0].sha256,
                       size: versions[0].size,
+                      state: versions[0].state,
                       uploaded_at: versions[0].uploaded_at
                   }
                 : null,

src/routes/api/scripts/[id]/+server.ts

@@ -26,6 +26,7 @@ export async function GET({ params }: { params: { id: string } }) {
         sha256: v.sha256,
         size: v.size,
         notes: v.notes,
+        state: v.state,
         uploaded_at: v.uploaded_at
     }));
     const matched = script.scope_type && script.scope_value