fix: correct version string for development builds

- Use git describe --exact-match to detect tagged commits
- Check for dirty working tree with git status --porcelain
- Use tag version ONLY if exact match AND clean working tree
- Otherwise fallback to v0.0.0-dev+<commit-hash> format
- Fixes issue where development builds showed old release tags

Author: NETIZEN-11

Makefile

@@ -21,8 +21,19 @@ YEAR_GEN          := $(shell date '+%Y')
 
 GOBIN := $(shell go env GOPATH)/bin
 GIT_COMMIT := $(shell git rev-parse --short HEAD)
-# Use git describe to get semantic version, fallback to commit hash for dev builds
-VERSION := $(shell git describe --tags --match='v*' --abbrev=0 2>/dev/null || echo "v0.0.0-dev+${GIT_COMMIT}")
+GIT_TAG := $(shell git describe --tags --exact-match 2>/dev/null)
+DIRTY := $(shell git status --porcelain)
+
+# Version logic:
+# - Use tag ONLY if exact match AND clean working tree
+# - Otherwise fallback to dev version
+ifeq ($(GIT_TAG),)
+VERSION := v0.0.0-dev+$(GIT_COMMIT)
+else ifneq ($(DIRTY),)
+VERSION := v0.0.0-dev+$(GIT_COMMIT)
+else
+VERSION := $(GIT_TAG)
+endif
 
 export KPT_FN_WASM_RUNTIME ?= nodejs