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/benchmark/docker-compose.ramdisk.yml

@@ -0,0 +1,77 @@
+# Docker Compose override file for ramdisk-based benchmarks
+# Uses /dev/shm (tmpfs) for all database storage to eliminate disk I/O bottlenecks
+# and measure raw relay performance.
+#
+# Usage: docker compose -f docker-compose.yml -f docker-compose.ramdisk.yml up
+# Or via run-benchmark.sh --ramdisk
+
+version: "3.8"
+
+services:
+  # Next.orly.dev relay with Badger
+  next-orly-badger:
+    volumes:
+      - /dev/shm/benchmark/next-orly-badger:/data
+
+  # Next.orly.dev relay with DGraph
+  next-orly-dgraph:
+    volumes:
+      - /dev/shm/benchmark/next-orly-dgraph:/data
+
+  # DGraph Zero - cluster coordinator
+  dgraph-zero:
+    volumes:
+      - /dev/shm/benchmark/dgraph-zero:/data
+
+  # DGraph Alpha - data node
+  dgraph-alpha:
+    volumes:
+      - /dev/shm/benchmark/dgraph-alpha:/data
+
+  # Next.orly.dev relay with Neo4j
+  next-orly-neo4j:
+    volumes:
+      - /dev/shm/benchmark/next-orly-neo4j:/data
+
+  # Neo4j database
+  neo4j:
+    volumes:
+      - /dev/shm/benchmark/neo4j:/data
+      - /dev/shm/benchmark/neo4j-logs:/logs
+
+  # Khatru with SQLite
+  khatru-sqlite:
+    volumes:
+      - /dev/shm/benchmark/khatru-sqlite:/data
+
+  # Khatru with Badger
+  khatru-badger:
+    volumes:
+      - /dev/shm/benchmark/khatru-badger:/data
+
+  # Relayer basic example
+  relayer-basic:
+    volumes:
+      - /dev/shm/benchmark/relayer-basic:/data
+
+  # Strfry
+  strfry:
+    volumes:
+      - /dev/shm/benchmark/strfry:/data
+      - ./configs/strfry.conf:/etc/strfry.conf
+
+  # Nostr-rs-relay
+  nostr-rs-relay:
+    volumes:
+      - /dev/shm/benchmark/nostr-rs-relay:/data
+      - ./configs/config.toml:/app/config.toml
+
+  # Rely-SQLite relay
+  rely-sqlite:
+    volumes:
+      - /dev/shm/benchmark/rely-sqlite:/data
+
+  # PostgreSQL for relayer-basic
+  postgres:
+    volumes:
+      - /dev/shm/benchmark/postgres:/var/lib/postgresql/data