chore: prepare CLI v0.2.0 release

[Kinfe123]

The public installer still downloads v0.1.0, which cannot use the hosted setup flow. Prepare v0.2.0 with host-backed defaults: install → tress setup → join the saved thread, using the host's credentials. Standalone execution remains available through --local.

The release workflow tests each optimized macOS/Linux executable on ARM64 and x86-64 before packaging. It checks the embedded version, hosted defaults, private connection storage, redacted diagnostics, and hidden-key terminal input. Publishing requires the version tag after this PR merges.

Integrated the current main, including host diagnostics, demo limits, and the host/client role UI. Fixed managed stream probes to send Statewire negotiation headers: previously a healthy Harness connection could report HTTP 400. A regression test now exercises the actual Statewire host without sending commands. Updated the installer guidance, migration/release docs, and site version labels.

Validation:

• 75 Rust tests and the optimized macOS ARM64 binary's setup and PTY checks passed.
• All 13 installer tests passed.
• 34 host tests passed locally; 2 PostgreSQL tests run in CI.
• TypeScript and the Farm production build passed.
• GitHub CI and Vercel preview validate the combined branch; the four-platform release workflow runs after tagging.

[vercel]

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Project	Deployment	Actions	Updated
tress	Ready	Preview	Sep 27, 2026 12:00am UTC