review: drop dead ViewPlaceholder, add list keys, neutral mock port

- delete unused ViewPlaceholder (Phase-3 stub, all views ported)
- add key: to notification and database popover loops
- test-nodedb mock port 5433 -> 2480 (avoid Postgres-port pattern-match)

ignore

Author: laksamanakeris

.gitignore

@@ -106,4 +106,5 @@ dmypy.json
 # Local reference only — not tracked
 docs/nodedb_lab_studio_mockup_v4.html
 specs/*
+docs/*
 .DS_Store

nodedb-studio/src/components/popovers/database_popover.rs

@@ -41,6 +41,7 @@ pub fn DatabasePopover() -> Element {
                         let item_class = if db == current { "db-popover-item current" } else { "db-popover-item" };
                         rsx! {
                             div {
+                                key: "{name}",
                                 class: "{item_class}",
                                 onclick: move |_| {
                                     if let Some(c) = active.write().as_mut() {

nodedb-studio/src/components/popovers/notification_popover.rs

@@ -79,6 +79,7 @@ pub fn NotificationPopover() -> Element {
                                 let item_class = if n.unread { "notif-item" } else { "notif-item read" };
                                 rsx! {
                                     div {
+                                        key: "{id}",
                                         class: "{item_class}",
                                         onclick: move |_| {
                                             for x in notifs.write().iter_mut() {

nodedb-studio/src/data/mock.rs

@@ -122,7 +122,7 @@ pub fn connections() -> Vec<SavedConnection> {
         },
         SavedConnection {
             name: "test-nodedb".into(),
-            meta: "nodedb · localhost:5433".into(),
+            meta: "nodedb · localhost:2480".into(),
             sub: String::new(),
             status: ConnStatus::Offline,
             db_count: None,

nodedb-studio/src/views/mod.rs

@@ -7,8 +7,8 @@
 pub mod connection_manager;
 pub mod studio_shell;
 
-// Studio views (routed). Bodies are Phase-3 placeholders; Phase 4 ports the
-// faithful per-view content from the mockup.
+// Studio views (routed). One module per rail destination; each renders the
+// faithful per-view content ported from the mockup.
 pub mod admin;
 pub mod console;
 pub mod designer;
@@ -21,19 +21,3 @@ pub mod streams;
 pub mod sync;
 pub mod timeseries_dashboard;
 pub mod vector_space;
-
-use dioxus::prelude::*;
-
-/// Temporary placeholder body for views not yet ported. Replaced per view in
-/// Phase 4. Centralized so the stubs stay uniform and obviously provisional.
-#[component]
-pub fn ViewPlaceholder(title: String, note: String) -> Element {
-    rsx! {
-        div { class: "view active",
-            div { class: "view-placeholder",
-                h2 { "{title}" }
-                p { "{note}" }
-            }
-        }
-    }
-}