fix(desktop): show armed goals waiting for their first Turn

[CxHsin]

Summary

• Carry a Goal's armed state through the Runtime Host projection and Desktop IPC.
• Show armed Goals as set for the next Turn without a running pulse.
• Keep a first Turn that is already active in the running presentation, then reject mixed protocol versions through compatibility epoch 32.

Fixes #3362

Verification

• npx biome check on changed files passed after rebasing onto main.
• Before the rebase, npm --workspace @maka/desktop run typecheck, the affected Runtime Host protocol tests, Desktop IPC tests, and the renderer timing regression test passed.
• The rebase changes only the Runtime Host compatibility epoch from 30 to 32, preserving upstream epoch 30 for credential pairing and epoch 31 for the Claude OAuth provider removal.

A fresh full workspace build in the isolated rebase worktree could not complete because the environment blocks the lockfile's remote @xterm/xterm tarball. The PR has no failing CI checks at present.

AI use

• No generative tool made a substantive contribution
• Generative tooling made a substantive contribution

Tool(s) and scope: Codex implemented the protocol, Desktop, UI, and test changes. The commit retains the required Generated-by: Codex trailer.

Checklist

• Tests cover the change and fail without it
• Lint, format, typecheck and the affected suites pass locally

Does this PR entail a change in behavior?

• Yes - an armed Goal now reports that it takes hold on the next Turn and does not pulse before that Turn starts.
• No