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/lib/server/db/schema.sql

@@ -47,6 +47,7 @@ CREATE TABLE IF NOT EXISTS script_versions (
     size         INTEGER NOT NULL,
     content      BLOB NOT NULL,
     notes        TEXT,
+    state        TEXT NOT NULL DEFAULT 'untested',   -- 'untested' | 'tested' | 'test-failed'
     uploaded_at  TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ','now')),
     UNIQUE(script_id, version)
 );
@@ -96,11 +97,16 @@ CREATE TABLE IF NOT EXISTS beta_servers (
 CREATE INDEX IF NOT EXISTS idx_beta_servers_stage ON beta_servers(stage);
 
 CREATE TABLE IF NOT EXISTS deployments (
-    id           TEXT PRIMARY KEY,
-    action       TEXT NOT NULL,
-    started_at   TEXT NOT NULL,
-    finished_at  TEXT,
-    triggered_by TEXT
+    id                TEXT PRIMARY KEY,
+    action            TEXT NOT NULL,                          -- 'drift' | 'promote' | 'rollback'
+    started_at        TEXT NOT NULL,
+    finished_at       TEXT,
+    triggered_by      TEXT,
+    script_id         INTEGER REFERENCES scripts(id),         -- promote/rollback only
+    script_version_id INTEGER REFERENCES script_versions(id), -- the version this deployment lands / restores
+    prior_version_id  INTEGER REFERENCES script_versions(id), -- current_version_id before this promote
+    beta_id           INTEGER REFERENCES betas(id),           -- promote only
+    rolled_back_by    TEXT REFERENCES deployments(id)         -- set on the promote row when a rollback reverses it
 );
 
 CREATE INDEX IF NOT EXISTS idx_deployments_started ON deployments(started_at DESC);