refactor(repo): consolidate openflare-server to root and move subprojects to internal/apps

- Merge all files inside openflare-server to the repository root directory.
- Relocate agent, relay, and flared subprojects from internal/ to internal/apps/.
- Combine docker-compose files and update build context paths to root.
- Update GitHub workflows and Dockerfiles to refer to new directories and package names.
- Rewrite Go package imports across all files.
- Resolve database renew test race condition and clean up docs.

internal/apps/openflare/agent/config_test.go

@@ -0,0 +1,46 @@
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+package agent
+
+import (
+	"testing"
+
+	openrestyrender "github.com/Rain-kl/Wavelet/pkg/render/openresty"
+)
+
+func TestIsRuntimeGeneratedSupportFile(t *testing.T) {
+	tests := []struct {
+		path string
+		want bool
+	}{
+		{path: "pow_config.json", want: true},
+		{path: "waf_config.json", want: true},
+		{path: openrestyrender.SourceConfigFileName, want: true},
+		{path: "runtime/custom.json", want: false},
+		{path: "certs/example.pem", want: false},
+	}
+	for _, tc := range tests {
+		if got := isRuntimeGeneratedSupportFile(tc.path); got != tc.want {
+			t.Fatalf("isRuntimeGeneratedSupportFile(%q) = %v, want %v", tc.path, got, tc.want)
+		}
+	}
+}
+
+func TestSourceSupportFilesFiltersRuntimeGeneratedFiles(t *testing.T) {
+	files := []SupportFile{
+		{Path: "certs/example.pem", Content: "pem"},
+		{Path: "pow_config.json", Content: "{}"},
+		{Path: "waf_config.json", Content: "{}"},
+		{Path: openrestyrender.SourceConfigFileName, Content: "{}"},
+		{Path: "routes/extra.json", Content: "{}"},
+	}
+
+	filtered := sourceSupportFiles(files)
+	if len(filtered) != 2 {
+		t.Fatalf("expected 2 support files, got %d: %+v", len(filtered), filtered)
+	}
+	if filtered[0].Path != "certs/example.pem" || filtered[1].Path != "routes/extra.json" {
+		t.Fatalf("unexpected filtered files: %+v", filtered)
+	}
+}