feat: a status pane, like lazygit's: version, updates, accounts, files and links

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

internal/ui/app/testdata/TestGolden.golden

@@ -1,8 +1,11 @@
-╭─ [1] Sources - Favourites ────╮╭─ platform-prod ─────────────────────────────────────────────────╮
-│ ▾ Azure (2)                   ││ name       platform-prod                                        │
-│   platform-prod               ││ ID         sub-prod                                             │
-│   platform-dev                ││ web        https://portal.azure.com/#resource/subscriptions/sub…│
-│ ▾ Databricks (2)              ││ vaults     3                                                    │
+╭─ [0] lazysecrets ─────────────╮╭─ platform-prod ─────────────────────────────────────────────────╮
+│ 2 accounts                    ││ name       platform-prod                                        │
+╰───────────────────────────────╯│ ID         sub-prod                                             │
+╭─ [1] Sources - Favourites ────╮│ web        https://portal.azure.com/#resource/subscriptions/sub…│
+│ ▾ Azure (2)                   ││ vaults     3                                                    │
+│   platform-prod               ││                                                                 │
+│   platform-dev                ││                                                                 │
+│ ▾ Databricks (2)              ││                                                                 │
 │   prod                        ││                                                                 │
 ╰────────────────────── 2 of 6 ─╯│                                                                 │
 ╭─ [2] Vaults ──────────────────╮│                                                                 │