chore(oss): audit root config, compose, scripts, and catalog tests

Replace the 182-line inline schema in docker-compose.yml with a runner
over packages/server/migrations, add 004 restoring the constraints and
64-bit counters the inline SQL carried, skip migrations already recorded
in schema_versions, relabel the mount for SELinux, and drop the obsolete
compose version key. Retarget the catalog contract test at the migration
files.

Claude-Session: https://claude.ai/code/session_01Agoc9bRVE9KL7mmWtey9Vq

package.json

@@ -2,7 +2,7 @@
   "name": "elydora-open-source",
   "version": "0.1.0",
   "private": true,
-  "description": "Open-source responsibility layer for AI agents — tamper-evident audit trails with cryptographic proof for every action.",
+  "description": "Open-source responsibility layer for AI agents: tamper-evident audit trails with cryptographic proof for every action.",
   "keywords": [
     "ai",
     "agents",