pack: v0.30.1 — fix lithostitched client-side bug

Client launcher reported on startup:
  Mod improved_village_placement requires lithostitched 1.4 or above
  Currently, lithostitched is not installed

Cause: lithostitched was flagged side=server in pack.lock and the
live manifest, so the client launcher skipped it during sync. But
Improved Village Placement (added in v0.29.1) declares lithostitched
as a runtime dependency and IVP itself is side=both, so the client
loaded IVP and then failed the dep check.

Lithostitched is a worldgen library — many mods that use it need it
on both sides (client renders modded structures using its hooks).
Flipping to side=both is the safer default for any library mod.

The other server-side flagged entries (Yung's Better X, noisium,
async-locator, servercore) are genuinely server-only and stay as-is.

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

pack/pack.lock.json

@@ -1,13 +1,13 @@
 {
   "$schema": "Brass-and-Sigil pack.lock.json - generated, do not edit by hand unless you know what you are doing",
   "name": "Brass and Sigil",
-  "version": "0.30.0",
+  "version": "0.30.1",
   "minecraft": "1.21.1",
   "loader": {
     "type": "neoforge",
     "version": "21.1.228"
   },
-  "lockedAt": "2026-05-29T19:46:44Z",
+  "lockedAt": "2026-05-30T20:06:36Z",
   "mods": [
     {
       "source": "modrinth",
@@ -557,7 +557,7 @@
       "url": "https://cdn.modrinth.com/data/XaDC71GB/versions/IONexlgI/lithostitched-1.7.2-neoforge-21.1.jar",
       "sha1": "ce35206214647131ebdf14212d1986349aeba79a",
       "size": 810015,
-      "side": "server"
+      "side": "both"
     },
     {
       "source": "modrinth",