* Add implementation plan for removing Phoenix and notebooks
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Phase 1: Decouple database shells from Phoenix to CloudShell-only
Migrate all shell terminals to the CloudShell path and remove the legacy Phoenix notebook-server terminal code so shells no longer depend on notebook provisioning.
- TerminalTab now always uses CloudShellTerminalComponentAdapter; removed the notebook-server adapter branch, getNotebookServerInfo, and the dead VCoreMongo firewall check
- Migrate Postgres and VCore Mongo quickstart tabs to CloudShellTerminalComponent (drop allocateContainer/useNotebook dependencies)
- Refactor useTerminal to send input via the CloudShell WebSocket instead of postRobot/iframe; register the socket from CloudShellTerminalComponent
- Simplify Explorer.openNotebookTerminal to always open a CloudShell terminal
- Delete NotebookTerminalComponent(+test/less/snapshot), NotebookTerminalComponentAdapter, and the src/Terminal/ entry point
- Remove the terminal.html webpack entry/HTML plugin and src/Terminal from tsconfig.strict.json
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>