refactor(server): squash drizzle migrations 0000-0004 into single baseline

Generated by pnpm db:generate against the current schema.ts — replaces
five historical migrations (0000_initial, 0001_clear_earthquake,
0002_peer_approval_requests, 0003_classy_loki, 0004_cooing_black_knight)
with one baseline that matches the schema shape all five produced together.

Pi + VM __drizzle_migrations rows will be rewritten per the Phase 2
surgery procedure before this deploys to either instance; DBs already
match the new baseline, no DDL runs. Phase 1 audit verified no still-present
bugs depend on any of the squashed migrations.

Refs backlog #31 Phase 2.

packages/server/drizzle/meta/_journal.json

@@ -5,36 +5,8 @@
     {
       "idx": 0,
       "version": "6",
-      "when": 1775687181033,
-      "tag": "0000_initial",
-      "breakpoints": true
-    },
-    {
-      "idx": 1,
-      "version": "6",
-      "when": 1775734599940,
-      "tag": "0001_clear_earthquake",
-      "breakpoints": true
-    },
-    {
-      "idx": 2,
-      "version": "6",
-      "when": 1776689384005,
-      "tag": "0002_peer_approval_requests",
-      "breakpoints": true
-    },
-    {
-      "idx": 3,
-      "version": "6",
-      "when": 1776789567488,
-      "tag": "0003_classy_loki",
-      "breakpoints": true
-    },
-    {
-      "idx": 4,
-      "version": "6",
-      "when": 1776802580650,
-      "tag": "0004_cooing_black_knight",
+      "when": 1777065939127,
+      "tag": "0000_lethal_wildside",
       "breakpoints": true
     }
   ]