Add serve mode, fix binary tags, document CLI tools, improve Docker

- Add 'serve' subcommand for ephemeral RAM-based relay at /dev/shm with
  open ACL mode for testing and benchmarking
- Fix e-tag and p-tag decoding to use ValueHex()/ValueBinary() methods
  instead of Value() which returns raw bytes for binary-optimized storage
- Document all command-line tools in readme.adoc (relay-tester, benchmark,
  stresstest, blossomtest, aggregator, convert, FIND, policytest, etc.)
- Switch Docker images from Alpine to Debian for proper libsecp256k1
  Schnorr signature and ECDH support required by Nostr
- Upgrade Docker Go version from 1.21 to 1.25
- Add ramdisk mode (--ramdisk) to benchmark script for eliminating disk
  I/O bottlenecks in performance measurements
- Add docker-compose.ramdisk.yml for tmpfs-based benchmark volumes
- Add test coverage for privileged policy with binary-encoded p-tags
- Fix blossom test to expect 200 OK for anonymous uploads when auth is
  not required (RequireAuth=false with ACL mode 'none')
- Update follows ACL to handle both binary and hex p-tag formats
- Grant owner access to all users in serve mode via None ACL
- Add benchmark reports from multi-relay comparison run
- Update CLAUDE.md with binary tag handling documentation
- Bump version to v0.30.2

cmd/blossomtest/main.go

@@ -36,12 +36,12 @@ var (
 
 // BlossomDescriptor represents a blob descriptor returned by the server
 type BlossomDescriptor struct {
-	URL       string   `json:"url"`
-	SHA256    string   `json:"sha256"`
-	Size      int64    `json:"size"`
-	Type      string   `json:"type,omitempty"`
-	Uploaded  int64    `json:"uploaded"`
-	PublicKey string   `json:"public_key,omitempty"`
+	URL       string     `json:"url"`
+	SHA256    string     `json:"sha256"`
+	Size      int64      `json:"size"`
+	Type      string     `json:"type,omitempty"`
+	Uploaded  int64      `json:"uploaded"`
+	PublicKey string     `json:"public_key,omitempty"`
 	Tags      [][]string `json:"tags,omitempty"`
 }
 
@@ -49,7 +49,7 @@ func main() {
 	flag.Parse()
 
 	fmt.Println("🌸 Blossom Test Tool")
-	fmt.Println("===================\n")
+	fmt.Println("===================")
 
 	// Get or generate keypair (only if auth is enabled)
 	var sec, pub []byte