fix(ci): add overrides for tarball install to resolve deps locally

bun resolves transitive deps from the npm registry even when all
packages are provided as local tarballs. Since 12.15.0 isn't published
yet, these lookups fail. Adding overrides in package.json forces bun
to resolve all @oh-my-pi/* packages from the local tarballs.

scripts/install-tests/run-ci.sh

@@ -83,9 +83,25 @@ mkdir -p "$TARBALL_APP_DIR"
 (
 	cd "$TARBALL_APP_DIR"
 	bun init -y >/dev/null
+
+	# Write overrides so bun resolves inter-package deps from tarballs, not the registry
+	# (version 12.x.y hasn't been published yet when CI runs pre-release)
+	node -e "
+		const pkg = JSON.parse(require('fs').readFileSync('package.json', 'utf8'));
+		pkg.overrides = {
+			'@oh-my-pi/pi-utils': '$utils_tgz',
+			'@oh-my-pi/pi-natives': '$natives_tgz',
+			'@oh-my-pi/pi-ai': '$ai_tgz',
+			'@oh-my-pi/pi-agent-core': '$agent_tgz',
+			'@oh-my-pi/pi-tui': '$tui_tgz',
+			'@oh-my-pi/omp-stats': '$stats_tgz',
+			'@oh-my-pi/pi-coding-agent': '$coding_agent_tgz'
+		};
+		require('fs').writeFileSync('package.json', JSON.stringify(pkg, null, 2));
+	"
+
 	bun add "$utils_tgz" "$natives_tgz" "$ai_tgz" "$agent_tgz" "$tui_tgz" "$stats_tgz" "$coding_agent_tgz"
 	smoke_cli ./node_modules/.bin/omp
-)
 
 echo ""
 echo "All install method smoke tests passed"