Agent Plugins 0.19.2

• An explicit Worktree cleanup request authorizes exact eligible removals without a second
  approval prompt. Inspection-only requests remain read-only; recovery and lease checks remain.
• Restore the Rust 1.99 gate without weakening test assertions, and remove obsolete AEP command
  inventory entries.
• Verify the skills against AEP 0.68.0, ESS 0.52.0 and Worktree 0.8.2. Two isolated ESS
  full-package trials produced all nine outputs and passed 24 and 15 scenarios without failures
  or skips; the recorded trial evidence states the limits of those observations.
• Clarify Rust and Go implementation synthesis and Go conformance package placement.
• The release workflow prepares checksummed artifacts with read-only permissions; publication
  uses the organization bot rather than the default Actions identity.