Rework as scripts-centric, upload-only, gated beta lifecycle

Scripts become first-class: named, versioned, uploaded via the UI, optionally
scoped to a game or map. Any change that would land on scope-matched servers
(marking-required or new version of a scoped script) must first pass a beta.
The beta runs a per-server state machine — deploy -beta.gsc → wait empty →
Komodo restart → wait healthy → optionally wait for a real match end
(games_sp.log 'ExitLevel: executed') — before it's eligible for promotion.
Rollback is always available and restores from .OLD.

The shared/scripts mirror and its betas/ staging folder are gone. Every
server now has a tracked script inventory (server_scripts table), populated
only by explicit upload flows.

New: /scripts, /scripts/[id], /betas/[id] UI; /api/scripts + /api/betas +
/api/servers/[name]/scripts endpoints; scripts.ts, inventory.ts, beta.ts
(rewritten), beta-runner.ts, match-log.ts, komodoInspectHealthy().
Removed: push.ts, /api/push, BetaPanel, legacy importer.

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

.env.example

@@ -1,7 +1,8 @@
 # Filesystem paths — inside the Komodo container, these mirror the host layout
-SHARED_SCRIPTS=/root/zombies/shared/scripts
 SERVERS_ROOT=/root/zombies/t5
 REL_DEST=runtime/plutonium/storage/t5/raw/scripts/sp
+# On-disk archive of active beta files (cleared per-beta on promote/rollback)
+BETA_ARCHIVE_DIR=/root/zombies/beta-archive
 
 # SQLite location
 DB_PATH=/data/cherry.db