test(tools): add unit tests for error handling functions

* Implement tests for error functions like errRequiredField, errInvalidField, and errEntityNotFound.
* Ensure proper metadata is returned for various error scenarios.
* Validate error handling in CRM, Files, and other tools.
* Introduce tests for parsing stored file IDs and UUIDs.
* Enhance coverage for helper functions related to project resolution and session management.

Makefile

@@ -1,6 +1,15 @@
 BIN_DIR := bin
 SERVER_BIN := $(BIN_DIR)/amcs-server
 CMD_SERVER := ./cmd/amcs-server
+BUILDINFO_PKG := git.warky.dev/wdevs/amcs/internal/buildinfo
+VERSION_TAG ?= $(shell git describe --tags --exact-match 2>/dev/null || echo dev)
+COMMIT_SHA ?= $(shell git rev-parse --short HEAD 2>/dev/null || echo unknown)
+BUILD_DATE ?= $(shell date -u +%Y-%m-%dT%H:%M:%SZ)
+LDFLAGS := -s -w \
+	-X $(BUILDINFO_PKG).Version=$(VERSION_TAG) \
+	-X $(BUILDINFO_PKG).TagName=$(VERSION_TAG) \
+	-X $(BUILDINFO_PKG).Commit=$(COMMIT_SHA) \
+	-X $(BUILDINFO_PKG).BuildDate=$(BUILD_DATE)
 
 .PHONY: all build clean migrate
 
@@ -8,7 +17,7 @@ all: build
 
 build:
 	@mkdir -p $(BIN_DIR)
-	go build -o $(SERVER_BIN) $(CMD_SERVER)
+	go build -ldflags "$(LDFLAGS)" -o $(SERVER_BIN) $(CMD_SERVER)
 
 migrate:
 	./scripts/migrate.sh