fix(issue-10,11,13,15): complete agy purge, orchestrator purge, workspace-anchored registry

Issue #10 - agy purge_artifacts left resumable pieces behind: it now also
removes the SQLite sidecars (-wal/-shm/-journal), the title annotation and
the presence lock (the lock only once no live process references the
conversation), and residual_artifacts() reports anything under
~/.gemini/antigravity-cli still carrying the uuid.

Issue #13 - the orchestrator has no herdr_sessions row, so its conversation
could not be purged by any skill. `lib_py.agents purge <agent|auto> <uuid>`
resolves the adapter from what is on disk (orchestrator_uuids stores bare
uuids), refuses while a live process names the uuid (conversation_in_use:
process list minus the caller's own lineage, plus lsof), and prints what it
purged. `orc_onboard.sh --remove <uuid> --purge-conversation --yes [--agent]`
runs it before the registry update so a refusal changes nothing (exit 4
without --yes, 5 while in use).

Issue #11 - "Successfully removeed": conjugate add/remove explicitly.

Issue #15 - the job registry and audit log followed the caller's cwd, so the
pytest suite (create_session.sh with its default onboarding job, run from the
repo root) had left 593 test records in the real .mam/jobs. Defaults now
resolve MAM_JOBS_DIR / DELEGATE_JOB_LOGS_DIR, then $WORKSPACE_ROOT/.mam/...,
then the cwd (mqtt_common.default_registry_dir / get_logs_dir; registry.py,
publish_event.py, service.py, create_session.sh, stop_session.sh); the
sandbox fixture pins both. The tier suites that used to leak now leave the
real registry untouched (881 records before and after).

Tests: test_issue10_13_purge.py (13), test_issue15_registry_isolation.py (7);
T-O13 pins the corrected message; the R1 helper test and B-9 logs-dir test
now assert the workspace-anchored contract; publish_event snapshot updated.

Refs #10 #11 #13 #15

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VCgu9Fa9iT7TbJUSzdq4Ff

.agents/skills/lib_py/delegation/mqtt_common.py

@@ -137,6 +137,31 @@ DEFAULT_REGISTRY_DIR = ".mam/jobs"
 DEFAULT_TOPIC_ROOT = "python/mqtt/jobs"
 LOCK_FILENAME = ".lock"
 
+
+def _workspace_mam_dir(leaf: str) -> Optional[str]:
+    """`$WORKSPACE_ROOT/.mam/<leaf>` when lib.sh has told us which workspace we
+    serve; None otherwise."""
+    root = os.environ.get("WORKSPACE_ROOT")
+    if root and root.strip() and os.path.isdir(root):
+        return os.path.join(root, ".mam", leaf)
+    return None
+
+
+def default_registry_dir() -> str:
+    """Registry root, resolved at call time (Issue #15).
+
+    ``MAM_JOBS_DIR`` wins; otherwise the workspace lib.sh exported as
+    ``WORKSPACE_ROOT``; otherwise the historical cwd-relative ``.mam/jobs``.
+    Anchoring on the workspace is what keeps a test sandbox (or any caller
+    whose cwd is not the workspace) from registering jobs into whichever
+    ``.mam/jobs`` happens to sit under the current directory - the pytest
+    suite used to leave hundreds of onboarding records in the real registry.
+    """
+    env = os.environ.get("MAM_JOBS_DIR")
+    if env and env.strip():
+        return env
+    return _workspace_mam_dir("jobs") or DEFAULT_REGISTRY_DIR
+
 # Persistent audit-log layout: .mam/delegate_job_logs/<job_id>/{meta,events,status}.
 # This is a *separate* artifact from the registry: the registry is the live job
 # record (mutated in place), the audit log is an append-only history that
@@ -150,14 +175,16 @@ def get_logs_dir() -> str:
     """Audit-log root, resolved at call time (B-9).
 
     Overridable with ``DELEGATE_JOB_LOGS_DIR``; otherwise
-    ``<cwd>/.mam/delegate_job_logs``. Resolved per call rather than at import
-    so a chdir after import cannot strand the audit trail in the old tree —
-    the same reason ``DEFAULT_REGISTRY_DIR`` stays a relative string.
+    ``$WORKSPACE_ROOT/.mam/delegate_job_logs`` (Issue #15, see
+    ``default_registry_dir``); otherwise ``<cwd>/.mam/delegate_job_logs``.
+    Resolved per call rather than at import so a chdir after import cannot
+    strand the audit trail in the old tree — the same reason
+    ``DEFAULT_REGISTRY_DIR`` stays a relative string.
     """
     env = os.environ.get("DELEGATE_JOB_LOGS_DIR")
     if env and env.strip():
         return env
-    return os.path.join(os.getcwd(), ".mam", "delegate_job_logs")
+    return _workspace_mam_dir("delegate_job_logs") or os.path.join(os.getcwd(), ".mam", "delegate_job_logs")
 
 
 def __getattr__(name: str):          # PEP 562 (3.7+)