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, 13 insertions, 4 deletions

diff --git a/modules/core/module-aiassist.js b/modules/core/module-aiassist.js
index be5ebce..2ee95e9 100644
--- a/modules/core/module-aiassist.js
+++ b/modules/core/module-aiassist.js
@@ -1679,6 +1679,15 @@ buildSystemPrompt() {
                             // assistant message is pushed below.
                             res.tool_calls = _remaining;
                             this._pendingBlockedReplays = blocked;
+                            // MAINT-006: the hard stop was only reachable when EVERY call in the
+                            // batch was blocked, so a turn that mixed one repeated call with one
+                            // novel call never ended — the reported "agents loop on repetitive
+                            // turns". Apply the same ceiling on the mixed path.
+                            const _hsMixed = Math.min(_hardStopAt, maxTurns);
+                            if (blocked.some(b => b.entry.count >= _hsMixed)) {
+                                this.terminal.print(`⛔ ${_agentTag}: no progress after ${_hsMixed} identical calls — ending loop with partial result`, 'error');
+                                return { finalAnswer: this._loopSummary(toolTurns), toolTurns };
+                            }
                         }
                         this.terminal.print(`🔧 AI wants ${res.tool_calls.length} tool(s) — turn ${toolTurns}/${maxTurns} (${thinkTime}s)`, 'info');
                         messages.push(res.message);
@@ -2700,7 +2709,7 @@ buildSystemPrompt() {
                         case 'session_terminal': {
                             const tfs = this.terminal.fs;
                             try {
-                                const raw = tfs.readFile('_sessions/_auto.json');
+                                const raw = tfs.readFile('/_sessions/_auto.json');
                                 if (!raw) return JSON.stringify({ error: 'No auto-saved session found' });
                                 const data = JSON.parse(raw);
                                 const lines = (data.terminalLines || []).slice(-50);
@@ -3674,7 +3683,7 @@ buildSystemPrompt() {
                         const fs = this.terminal.fs;
                         if (fs) {
                             fs.mkdirRecursive('_sessions');
-                            fs.writeFile('_sessions/_auto-context.json', data);
+                            fs.writeFile('/_sessions/_auto-context.json', data);
                         }
                     } catch (e) {}
                 } catch (e) {
@@ -3800,8 +3809,8 @@ buildSystemPrompt() {
                 try {
                     const fs = this.terminal.fs;
                     if (fs) {
-                        fs.deleteFile('_sessions/_auto-context.json');
-                        fs.deleteFile('_sessions/_auto.json');
+                        fs.deleteFile('/_sessions/_auto-context.json');
+                        fs.deleteFile('/_sessions/_auto.json');
                     }
                 } catch (e) {}