fix(scripts): correctly detect an annotated tag at HEAD in changelog range

git rev-parse on an annotated tag (git tag -a, what the release process
uses) returns the tag object's hash, not the commit hash it points to
- so the HEAD == tag comparison never matched, and the script always
fell into the "not tagged yet" branch. Fixed by peeling the tag down
to its commit with ^{commit}. Verified against a real annotated tag:
now correctly shows "Changelog (<tag>)" with actual content instead
of an empty "since <tag>" section.

Also: untrack Outpost.xcodeproj/xcuserdata (already gitignored, but
was committed before that rule existed, so Xcode kept dirtying it and
blocking pulls - including the one that just happened) and ignore
scripts/package-dmg.sh's dist/ output.

.gitignore

@@ -60,3 +60,6 @@ fastlane/report.xml
 fastlane/Preview.html
 fastlane/screenshots/**/*.png
 fastlane/test_output
+
+# scripts/package-dmg.sh output
+/dist/

Outpost.xcodeproj/xcuserdata/psmattas.xcuserdatad/xcschemes/xcschememanagement.plist

@@ -1,14 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-	<key>SchemeUserState</key>
-	<dict>
-		<key>Outpost.xcscheme_^#shared#^_</key>
-		<dict>
-			<key>orderHint</key>
-			<integer>1</integer>
-		</dict>
-	</dict>
-</dict>
-</plist>

scripts/package-dmg.sh

@@ -98,7 +98,12 @@ if [ -z "$LATEST_TAG" ]; then
     HEADING="Changelog"
 else
     HEAD_COMMIT="$(git -C "$REPO_ROOT" rev-parse HEAD)"
-    TAG_COMMIT="$(git -C "$REPO_ROOT" rev-parse "$LATEST_TAG")"
+    # `^{commit}` peels an annotated tag down to the commit it points at —
+    # without it, `rev-parse` on an annotated tag (e.g. `git tag -a`) returns
+    # the tag *object's* hash, which never equals a commit hash, so this
+    # comparison would always take the "not tagged yet" branch below even
+    # when HEAD genuinely is the tagged commit.
+    TAG_COMMIT="$(git -C "$REPO_ROOT" rev-parse "${LATEST_TAG}^{commit}")"
     if [ "$HEAD_COMMIT" = "$TAG_COMMIT" ]; then
         PREV_TAG="$(git -C "$REPO_ROOT" describe --tags --abbrev=0 "${LATEST_TAG}^" 2>/dev/null || true)"
         RANGE="${PREV_TAG:+$PREV_TAG..}$LATEST_TAG"