Fix unsafe type assertions in VS Code Companion (Phase 4.2)

[mattKorwel]

Remove no-unsafe-type-assertion suppressions in packages/vscode-ide-companion/src/.

Files:

• packages/vscode-ide-companion/src/

Pattern:

• Casting vscode API results or IPC messages.

Fix Strategy:

• Use zod for IPC message validation between CLI and VS Code.

[mn3m-24]

/assign

[gemini-cli]

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[mn3m-24]

Actually, there are no no-unsafe-type-assertion suppressions in packages/vscode-ide-companion/src/
they were fixed in #19006
do you mean no-unsafe-assignment ?