Import the wilm endpoint-monitor and channel-distribution work

Everything on origin/wilm that is not on the published main, applied as one
change because the published history has rewritten hashes: per-commit
cherry-pick conflicts against our main even though the squashed diff applies
clean.

Contents: endpoint monitor catalog + policy attachment + warn-only drift
reconciler, operator issue reports from the tray, agent launch-path allowlist,
and the GHCR channel-image distribution path for dev workstations.

NOT READY FOR main. Open items:
  - 10 new routes are absent from docs/api-inventory.json, so
    test_api_inventory_parity fails. That gate SKIPS on the published mirror
    (the test ships, its data file is scrubbed), which is why wilm never saw it.
  - dev-bootstrap.ps1 and Start-ShopDBDev.ps1 hardcode the ge-aero GitHub org.
  - plugins/endpoints/plugin.py carries a whitespace-only re-indent.

Scope: product

plugins/endpoints/models/endpoint.py

@@ -75,6 +75,13 @@ class EndpointState(db.Model):
     interfacesjson = db.Column(db.Text(length=16777215), nullable=True)
     scheduledtasksjson = db.Column(db.Text(length=16777215), nullable=True)
 
+    # Warn-only reconciler output, refreshed on every agent check-in in the same
+    # commit as servicesjson. Each entry names a policy/shipped-attached monitor
+    # the endpoint is expected to be running but the latest snapshot does not
+    # report as running, so an operator sees the drift and intervenes manually.
+    # This is warn-only: nothing here is auto-remediated. Null = never computed.
+    driftjson = db.Column(db.Text(length=16777215), nullable=True)
+
     # Last-known MTConnect agent run state, cached so the WebUI toggle can show
     # a real state between command polls. Set by the agent's mtconnect_status
     # result. Null = never reported (unknown).