feat: Add pg_partman 5.5.0 as a SQL-only extension (NO_BGW)

.gitmodules

@@ -29,3 +29,6 @@
 [submodule "pglite/other_extensions/pgmq"]
 	path = pglite/other_extensions/pgmq
 	url = https://github.com/pgmq/pgmq
+[submodule "pglite/other_extensions/pg_partman"]
+	path = pglite/other_extensions/pg_partman
+	url = https://github.com/pgpartman/pg_partman.git

pglite/other_extensions/Makefile

@@ -18,6 +18,11 @@ ARCHIVE_DIR := /pglite/extensions/other
 EXTENSIONS := $(SUBDIRS)
 EXTENSIONS += postgis
 
+# NOTE: pg_partman is deliberately not in SUBDIRS: its default target would compile the
+# background worker, which cannot run in WASM. It is built SQL-only via its own
+# dist rule below with NO_BGW=1 (which is an officially supported pg_partman build mode).
+EXTENSIONS += pg_partman
+
 # Default target: build tarballs for all contribs
 dist: $(addsuffix .tar.gz,$(EXTENSIONS))
 
@@ -46,6 +51,18 @@ age.tar.gz:
 	files=$$(find . -type f -o -type l | sed 's|^\./||') && \
 	tar -czf $(ARCHIVE_DIR)/age.tar.gz $$files
 
+# pg_partman's core is pure SQL/PLpgSQL; NO_BGW=1 skips its background worker C module
+pg_partman.tar.gz:
+	@echo "=== Staging pg_partman (SQL-only, NO_BGW=1) ==="
+	rm -rf $(EXTENSIONS_BUILD_ROOT)/pg_partman
+	bash -c 'mkdir -p $(EXTENSIONS_BUILD_ROOT)/pg_partman/$(prefix)/{bin,lib,share/extension,share/doc,share/postgresql/extension}'
+	$(MAKE) -C pg_partman NO_BGW=1 install DESTDIR=$(EXTENSIONS_BUILD_ROOT)/pg_partman
+	@echo "=== Packaging pg_partman ==="
+	mkdir -p $(ARCHIVE_DIR)
+	cd $(EXTENSIONS_BUILD_ROOT)/pg_partman/$(prefix) && \
+	files=$$(find . -type f -o -type l | sed 's|^\./||') && \
+	tar -czf $(ARCHIVE_DIR)/pg_partman.tar.gz $$files
+
 dist-postgis:
 	@echo "=== Adding proj data to postgis archive ==="
 	gunzip $(ARCHIVE_DIR)/postgis.tar.gz
@@ -59,4 +76,4 @@ archive_clean:
 	rm -rf $(EXTENSIONS_BUILD_ROOT)/$*
 	rm -rf $(ARCHIVE_DIR)
 
-$(recurse)
+$(recurse)