Bump version to 0.2.7 to add upstream share card features

Makefile

@@ -1,13 +1,13 @@
-# Kamado Pool — StartOS 0.4.0 package.
+# Kamado Pool, StartOS 0.4.0 package.
 #
 # Prerequisites: node/npm, docker (with buildx), start-cli, rsync.
 # First run `npm ci`, then:
 #   make            -> kamado-pool.s9pk, the universal package (x86_64 +
-#                      aarch64 in one file) — this is what to ship.
+#                      aarch64 in one file), this is what to ship.
 #   make x86 / arm  -> single-arch packages, for faster dev iteration.
 #
 # Building the aarch64 image on an x86 host needs qemu binfmt handlers and
-# a builder that advertises linux/arm64 — `make setup` registers both.
+# a builder that advertises linux/arm64, `make setup` registers both.
 #
 # KamadoPool source is expected in a sibling checkout at ../KamadoPool
 # (override with `make KAMADO_SRC=/path/to/KamadoPool`). It is synced into
@@ -30,7 +30,7 @@ KAMADO_DEPS := $(shell find "$(KAMADO_SRC)/api" "$(KAMADO_SRC)/ui" "$(KAMADO_SRC
 	\( -name node_modules -o -name dist \) -prune -o -type f -print 2>/dev/null)
 
 ifeq (,$(wildcard node_modules/@start9labs/start-sdk/s9pk.mk))
-$(error node_modules missing — run 'npm ci' first)
+$(error node_modules missing, run 'npm ci' first)
 endif
 
 # overrides to s9pk.mk must precede the include statement