fix(bitwarden): reopen vault after unlocking

[vieitesss]

Why the change

Keep Bitwarden’s vault command available while rbw unlock runs so GUI pinentry can receive focus, then reopen the same command with the unlocked entries.

Special things to note

• Unlock still requires manual confirmation in the GUI pinentry; the command now allows up to 120 seconds for it.
• The reopen flow tolerates an “Already closed” CLI response and uses command-specific vicinae-cli cmd launch rather than a toggle.

Change outline

Unlock remains in the foreground for pinentry, then refreshes the list and explicitly closes/reopens the command:

 on Unlock Vault
-  closeMainWindow()
-  runRbw(["unlock"])
+  runRbw(["unlock"], timeout: 120s)  // keep the GUI available for pinentry
   set unlocked
-  load entries
+  if load entries succeeds
+    close suspended root (treat “Already closed” as success)
+    launch this extension command
+  if reopen fails
+    restore Vicinae window and show failure

[clankus-aurelius]

Thanks for contributing an extension to Vicinae! 👋

Before publication, this pull request receives two reviews:

1. An automated review for extension guidelines, safety, error handling, and likely correctness issues.
2. A final review from a Vicinae maintainer.

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