feat(ui): 11-point UI overhaul — tabs, transfers, settings, uploads

Hub/UI:
- Icon-only group tabs (chat, files, settings) with per-group default tab
- Transfer widget: filename becomes a clickable link to open completed downloads
- Pulse animation on transfer icon (pale→dark green) while active
- Download button feedback in FilePreview (spinner, auto-reset)
- Group mute toggle persists across navigation
- Login page autofocus, chat refocus after send
- Theme toggle closes menu, status badge and duplicate connecting removed
- Create-folder restricted to operators, download-path note removed
- User preferences API (CRUD) with Alembic migration
- Profile: email display/edit via PATCH /v1/users/me
- Settings: "Defaults" section for default tab selector
- All 10 locale files updated

Node:
- upload_dir in node.toml: separate filesystem path for uploads
- Root.direct flag: uploads land at root path, no subdirectory
- CLI --upload-dir flag on `group add`
- Admin UI accepts upload_dir

Client (Electron):
- shell.openPath bridge for opening completed downloads
- platform.js passes open callback from native save

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

1 files changed, 12 insertions, 0 deletions

diff --git a/packages/meshbay-node/src/meshbay_node/config.py b/packages/meshbay-node/src/meshbay_node/config.py
index c0326f0..8372e5c 100644
--- a/packages/meshbay-node/src/meshbay_node/config.py
+++ b/packages/meshbay-node/src/meshbay_node/config.py
@@ -70,6 +70,10 @@ quic_port   = 19010
                                          # and its files stay in the index,
                                          # rather than looking deleted
 
+# upload_dir: a separate directory for uploads. Files land directly in it,
+# not in an "uploads" subdirectory. It appears as its own root in the index.
+# upload_dir = "/home/user/Incoming"
+
 # The single-directory form still works and means the same thing — one root,
 # named after the directory, receiving uploads.
 [[groups]]
@@ -125,6 +129,7 @@ class RootSpec:
     name:   str = ""          # empty → the directory's basename, derived at load
     kind:   str = "generic"   # generic|video|audio|photo — a view hint, unused for now
     upload: bool = False      # exactly one root per group receives uploads
+    direct: bool = False      # uploads land at root path, not in a subdirectory
 
 
 @dataclass
@@ -137,6 +142,7 @@ class GroupConfig:
     # unprefixed shape.
     roots:      list[RootSpec] = field(default_factory=list)
     shared_dir: str = ""      # legacy single-root form, migrated at load
+    upload_dir: str = ""      # separate filesystem path for uploads
     visibility: str = "private"   # public|private — discoverability, not admission
     # Admission. "invite" (default) means a newcomer needs a one-time pairing code
     # before the node wraps the group key for them; "open" means the node pins
@@ -160,6 +166,11 @@ class GroupConfig:
         """
         if not self.roots and self.shared_dir.strip():
             self.roots = [RootSpec(path=self.shared_dir.strip(), upload=True)]
+        if self.upload_dir.strip():
+            for r in self.roots:
+                r.upload = False
+            self.roots.append(RootSpec(
+                path=self.upload_dir.strip(), upload=True, direct=True))
 
 
 @dataclass
@@ -275,6 +286,7 @@ def load_config(path: Path = DEFAULT_CONFIG_PATH) -> Config:
                     # Ignored when roots are given explicitly (warned about in
                     # _read_roots); otherwise __post_init__ migrates it.
                     shared_dir="" if _read_roots(g) else g.get("shared_dir", ""),
+                    upload_dir=g.get("upload_dir", ""),
                     visibility=g.get("visibility", "private"),
                     join_policy=g.get("join_policy", "invite"),
                     quic_port=g.get("quic_port", cfg.node.quic_port),