0.7: Qualify Claude Code, Claude Desktop and agy images #305

Parent: #289. Inspect source: #291.

Work boundary 7/13 from the approved 0.7 → clients → Inspect sequence.

Dependencies: #301, #302.

Reuse existing images and qualification harness. Exercise real application startup, authentication, MCP and lifecycle. Unsupported host/architecture combinations must be explicit.

Acceptance criteria:

• Claude Code and agy start, authenticate, call MCP and complete a session under hermetic fixtures.
• Claude Desktop authenticated GUI path passes on supported hosts.
• Images promote only after their qualification passes.

Planned PR boundaries: Qualification groups and image-specific fixes in focused PRs.

Implementation progress and evidence: Sprinty in the isolated integration/0.7-clients-inspect worktree. Focused tests during development; fast checks/Citadel per PR; relevant black-box proof for runtime, credential or image boundaries. Respect the active release and machine locks.