diff --git a/Makefile b/Makefile
index 9755b49..34c9b56 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-.PHONY: build run test test-unit test-integration test-workflow-integration test-e2e test-e2e-verbose test-e2e-ssh test-e2e-api test-e2e-nix test-e2e-install test-docker test-ssh test-distributed test-all test-summary test-ci clean install install-gotestsum lint fmt db-seed db-clean db-migrate run-server-debug swagger update-ui snapshot-release github-release docker-toolbox docker-toolbox-run docker-toolbox-shell docker-publish
+.PHONY: build run test test-unit test-integration test-workflow-integration test-e2e test-e2e-verbose test-e2e-ssh test-e2e-api test-e2e-nix test-e2e-install test-docker test-ssh test-distributed test-all test-summary test-ci clean install install-gotestsum lint fmt db-seed db-clean db-migrate run-server-debug swagger update-ui snapshot-release github-release github-action docker-toolbox docker-toolbox-run docker-toolbox-shell docker-publish
 
 # Go parameters
 GOCMD=go
@@ -317,6 +317,9 @@ github-release:
 	@echo "$(PREFIX) Building and publishing GitHub release..."
 	export GORELEASER_CURRENT_TAG="$(VERSION)" && goreleaser release --clean
 
+github-action:
+	gh workflow run manual-release.yaml && gh workflow run nightly-release.yaml
+
 # Database commands
 db-seed: build
 	@echo "$(PREFIX) Seeding database..."
@@ -390,6 +393,7 @@ help:
 	@echo "    make snapshot-release Build local snapshot release (no publish)"
 	@echo "    make local-release    Build local snapshot for mac/linux arm (testing)"
 	@echo "    make github-release   Build and publish GitHub release"
+	@echo "    make github-action    Trigger manual and nightly GitHub workflows"
 	@echo ""
 	@echo "\033[33m  DATABASE\033[0m"
 	@echo "    make db-seed          Seed database with sample data"
diff --git a/internal/executor/executor.go b/internal/executor/executor.go
index bb3ca33..0efdf77 100644
--- a/internal/executor/executor.go
+++ b/internal/executor/executor.go
@@ -84,6 +84,19 @@ func NewExecutor() *Executor {
 	}
 }
 
+func BuildBuiltinVariables(cfg *config.Config, params map[string]string) map[string]interface{} {
+	if cfg == nil {
+		cfg = config.DefaultConfig()
+		cfg.ResolvePaths()
+	}
+
+	exec := NewExecutor()
+	runUUID := uuid.New().String()
+	execCtx := core.NewExecutionContext("func-eval", core.KindModule, runUUID, params["target"])
+	exec.injectBuiltinVariables(cfg, params, execCtx)
+	return execCtx.GetVariables()
+}
+
 // SetSpinner enables or disables spinner display
 func (e *Executor) SetSpinner(show bool) {
 	e.showSpinner = show
@@ -293,7 +306,7 @@ func (e *Executor) injectBuiltinVariables(cfg *config.Config, params map[string]
 	execCtx.SetVariable("TimeStamp", fmt.Sprintf("%d", now.Unix()))
 	execCtx.SetVariable("CurrentTime", now.Format("2006-01-02T15:04:05"))
 	execCtx.SetVariable("Today", now.Format("2006-01-02"))
-	execCtx.SetVariable("RandomString", generateRandomString(8))
+	execCtx.SetVariable("RandomString", generateRandomString(6))
 
 	// Chunk-related variables (when running in chunk mode)
 	if v, ok := params["chunk_index"]; ok && v != "" {
@@ -462,7 +475,7 @@ func sanitizeTargetSpace(target string) string {
 
 // generateRandomString generates a random alphanumeric string
 func generateRandomString(length int) string {
-	const charset = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
+	const charset = "abcdefghijklmnopqrstuvwxyz"
 	b := make([]byte, length)
 	for i := range b {
 		b[i] = charset[rand.Intn(len(charset))]
diff --git a/pkg/cli/function.go b/pkg/cli/function.go
index 0c2e016..0df0df9 100644
--- a/pkg/cli/function.go
+++ b/pkg/cli/function.go
@@ -6,7 +6,6 @@ import (
 	"io"
 	"os"
 	"os/signal"
-	"runtime"
 	"strings"
 	"sync"
 	"syscall"
@@ -294,16 +293,16 @@ func runBulkFunctionEval(printer *terminal.Printer, script string) error {
 
 // executeFunctionForTarget executes the script for a single target
 func executeFunctionForTarget(printer *terminal.Printer, script, target string) error {
-	// Build context with target and params
-	ctx := make(map[string]interface{})
-
-	// Inject platform detection variables (always available, even without target)
-	ctx["PlatformOS"] = runtime.GOOS
-	ctx["PlatformArch"] = runtime.GOARCH
-	ctx["PlatformInDocker"] = executor.DetectDocker()
-	ctx["PlatformInKubernetes"] = executor.DetectKubernetes()
-	ctx["PlatformCloudProvider"] = executor.DetectCloudProvider()
+	params := map[string]string{}
+	if target != "" {
+		params["target"] = target
+	}
+	if funcTargetsFile != "" {
+		params["target_file"] = funcTargetsFile
+	}
 
+	cfg := config.Get()
+	ctx := executor.BuildBuiltinVariables(cfg, params)
 	if target != "" {
 		ctx["target"] = target
 	}
diff --git a/pkg/cli/workflow.go b/pkg/cli/workflow.go
index 5c64b53..a06350c 100644
--- a/pkg/cli/workflow.go
+++ b/pkg/cli/workflow.go
@@ -1106,7 +1106,7 @@ var workflowShowCmd = &cobra.Command{
 				{terminal.Cyan("{{Today}}"), "Current date (YYYY-MM-DD)", terminal.Yellow("<current date>")},
 				{terminal.Cyan("{{TimeStamp}}"), "Unix timestamp", terminal.Yellow("<unix timestamp>")},
 				{terminal.Cyan("{{CurrentTime}}"), "Current time (ISO 8601)", terminal.Yellow("<ISO 8601 time>")},
-				{terminal.Cyan("{{RandomString}}"), "Random 8-char alphanumeric", terminal.Yellow("<generated>")},
+				{terminal.Cyan("{{RandomString}}"), "Random 6-char lowercase letters", terminal.Yellow("<generated>")},
 			}
 			printMarkdownTable([]string{"Variable", "Description", "Default Value"}, builtinVars)
 		} else {