feat: node workflow redesign — wizard auto-config, reset, MusicBrainz contact

Wizard (Electron):
- Auto-provisions node config (hub URL + username) from logged-in user
- node:start handles both cold start and restart of misconfigured daemon
- Waits for daemon to reach 'running', auto-links node key on hub
- probeNode accepts intermediate states for wizard progress feedback

Reset (meshbay-node reset):
- Unlinks node key from hub (DELETE /me/node_key, best-effort)
- Stops and disables daemon (systemctl --user disable --now)
- Erases ~/.config/meshbay, ~/.local/share/meshbay, ~/.local/state/meshbay

MusicBrainz contact:
- Resolved from owner's hub email instead of per-node roster config
- Removed musicbrainz_contact UI and WebRTC handshake field
- Removed set_musicbrainz_contact/musicbrainz_contact from roster

Node pairing:
- Added operator pairing banner on NodePage
- Added operator_paired flag to list_groups

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

1 files changed, 9 insertions, 17 deletions

diff --git a/packages/meshbay-node/src/meshbay_node/ops.py b/packages/meshbay-node/src/meshbay_node/ops.py
index c880c75..cb8e01e 100644
--- a/packages/meshbay-node/src/meshbay_node/ops.py
+++ b/packages/meshbay-node/src/meshbay_node/ops.py
@@ -326,7 +326,13 @@ async def list_groups(state: dict) -> dict:
             "roots": roots.describe() if roots else [],
             "peers": sum(1 for p in peers.values() if p.get("group_id") == gid),
         })
-    return {"groups": out}
+    roster = state.get("roster")
+    has_operator = False
+    if roster:
+        members = await roster.list_members()
+        has_operator = any(m["role"] == "operator" and m["status"] == "active"
+                          for m in members)
+    return {"groups": out, "operator_paired": has_operator}
 
 
 async def attach_group(state: dict, name: str, shared_dir: str,
@@ -783,22 +789,8 @@ async def set_tmdb_enabled(state: dict, group_id: str, enabled: bool) -> dict:
 
 # ── MusicBrainz config (Music app) ───────────────────────────────────────────
 
-async def set_musicbrainz_config(state: dict, contact: str | None = None) -> dict:
-    """
-    The node-wide User-Agent contact string MusicBrainz's usage policy asks
-    for (docs/musicbay.md §3.2). Unlike set_tmdb_config there is no token to
-    manage — MusicBrainz's read endpoints need no credential — so this is a
-    single field. `contact=""` explicitly clears a previously-set contact
-    (reverting to "no calls at all", never a generic/unidentified
-    User-Agent); `contact=None` leaves whatever was there unchanged.
-    """
-    roster = _roster(state)
-    await roster.set_musicbrainz_contact(contact, set_by=state.get("node_user_id", ""))
-    if contact is not None:
-        state["musicbrainz_contact_configured"] = bool(contact)
-    log.info("MusicBrainz config: contact_configured=%s", bool(contact))
-    return {"contact_configured": state.get("musicbrainz_contact_configured", False)}
-
+# set_musicbrainz_config removed — MusicBrainz contact is now the owner's
+# hub email, resolved at login (daemon.py / musicbrainz.py).
 
 async def set_musicbrainz_enabled(state: dict, group_id: str, enabled: bool) -> dict:
     """