v0.6.2 is out: safer Ask mode for AI agents

DESIGN:OS Studio v0.6.2 shipped Oct 26. It's FREE, as always. This patch is mostly about agent safety:

- Ask-mode approval rights live outside every folder an agent can write to.

- Claude's hook reads from a private folder; project/local settings aren't loaded.

- The session folder never writes through links and never waits on a FIFO.

- Grok and Antigravity Ask tabs start only with Studio's correct config.

- MCP: tighter output paths and name checks, and no paths leaking outside the workspace.

Also new: create a text style from the Text section, and Gemini approval state in the panel.

Fixes: one-line code in the inspect panel, SwiftUI string escaping, instance layer names kept on sync, library styles in Properties.

Known issue: Windows tests are red on CI from a stack overflow in the tests, not a build failure. The Windows build ships normally. Tracked in #1158.

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