fix(newos4): agent registration is absolute-path and honest about what it stored

Three of the four agent-cluster items, each with a test that is red on HEAD.

- MAINT-008 (module-agent-registry.js + module-orchestrator.js): registerAgent took args[0] as the
  agent id and only args[1] as the capability list, while both orchestrator callers passed the
  command word first — so the boot log read "Agent 'register' registered with 1 capabilities" and
  four capabilities were stored as one. The command word is now stripped, args[1..] are joined and
  split on commas (both "a,b" and "a b c" work), and the callers pass [id, ...caps].
- MAINT-007 (registry + aiassist): mkdir/rm used relative paths, so a registration made from /docs
  created /docs/agents/<id> and an unregister from any other cwd removed nothing — the leaked
  directories the report suspected. Every path in the registry (and the four /_sessions writes in
  module-aiassist.js) is absolute now.
- MAINT-009 (listAgents): a directory alone counted as a registered agent, so a hand-made
  /agents/foo appeared as "foo — unknown (0 capabilities)". Only a readable status.json with an id
  counts now; the rest are reported as unregistered directories.

Verification: test-agent-registry.js (11 asserts). RED on HEAD: 9 of 11 fail, including the exact
`✅ Agent 'register' registered with 1 capabilities` line and `hand-made — unknown (0
capabilities)`. Suite 15/15 files green; maintain --fix "node tests 15/15 pass".
Live on v4.6.109: boot prints "✅ Agent 'orchestrator-0' registered with 4 capabilities";
`agent-list` warns "1 directory(ies) in /agents have no status.json (not registered): hand-made";
register from / with a comma list stores 3; unregister from /docs removes the directory and leaves
no /docs/agents.

MAINT-006 stays open with a narrower note: the hard stop was only reachable when every call in a
batch was blocked, so a mixed batch (one repeated + one novel call) never ended. The same ceiling
now applies on the mixed path, but that branch lives inside agenticLoop and is not covered by a unit
test — it needs a live agent run that repeats a call.

1 files changed, 4 insertions, 2 deletions

diff --git a/modules/core/module-orchestrator.js b/modules/core/module-orchestrator.js
index 5e03b0b..9f23ceb 100644
--- a/modules/core/module-orchestrator.js
+++ b/modules/core/module-orchestrator.js
@@ -179,7 +179,9 @@ class OrchestratorModule {
         // Register orchestrator in the agent registry
         const registry = this.terminal.moduleManager.modules['AgentRegistryModule'];
         if (registry) {
-            registry.registerAgent(['register', 'orchestrator-0', 'delegate', 'spawn', 'monitor', 'purge']);
+            // MAINT-008: the agent id comes first; passing the command word as args[0] registered an
+            // agent literally named "register" with one capability.
+            registry.registerAgent(['orchestrator-0', 'delegate', 'spawn', 'monitor', 'purge']);
         }
         // Reconcile + pre-spawn the default team. VirtualFileSystem.loadFromStorage() is ASYNC,
         // so reconciliation MUST wait for it — running it synchronously saw an empty root and
@@ -385,7 +387,7 @@ class OrchestratorModule {
             // Register in agent registry
             const registry = this.terminal.moduleManager.modules['AgentRegistryModule'];
             if (registry) {
-                registry.registerAgent(['register', id, ...agent.capabilities]);
+                registry.registerAgent([id, ...agent.capabilities]);
                 // A2A Scratchpad registration
                 if (typeof registry.a2aRegister === 'function') {
                     registry.a2aRegister(id, agent.capabilities);