💡 Change Scope

• Small Change: Fast feedback, localized UI/logic, low-risk.
• Large Change: New feature, cross-boundary logic, runtime-risk (persistence, IPC, lifecycle, recovery).

📝 What Does This PR Do?

• Prevents the workspace canvas from auto-running global Fit view when the currently active Space is archived.
• Keeps the existing explicit "All spaces" behavior unchanged, so manual global navigation still fits the canvas.
• Adds a regression test that distinguishes between an intentional clear-to-all action and archive-driven Space removal.
• Adds the required CHANGELOG entry for this user-visible behavior fix. (#217)

🏗️ Large Change Spec (Required if "Large Change" is checked)

N/A. This is a Small Change.

✅ Delivery & Compliance Checklist

• My code passes the ultimate gatekeeper: pnpm pre-commit is completely green.
• I have signed the CLA if required (see CLA.md).
• I have included new tests to lock down the behavior (or explicitly stated why it's untestable).
• I have strictly adhered to the DEVELOPMENT.md architectural boundaries.
• I have attached a screenshot or screen recording (if this touches the UI).
• I have updated the documentation accordingly (if adding a feature or changing a contract).

Note: the main functional commit passed pnpm pre-commit. A second rerun triggered only for the changelog-only follow-up commit hit an unrelated recovery E2E failure in tests/e2e/recovery.agent-input-after-restart.spec.ts and one flaky retry in tests/e2e/recovery.agent-terminal-replies.spec.ts.

📸 Screenshots / Visual Evidence

Behavior-only viewport change. No screenshot was attached from CLI.