1.2.9

[1.2.9] - 2026-08-07

Added

• Added Agent Runtime v2 capability negotiation with versioned tool manifests,
  session and project context binding, and runtime feature discovery.
• Added agent-definition schema v2 parsing with explicit tool allowlists,
  bounded turn limits, and compatibility warnings for legacy definitions.
• Added dependency-free verification for compact request-view pairing and
  truncation behavior.

Changed

• Hardened sidecar tool authorization with manifest validation, provider-visible
  tool reconciliation, input-schema checks, and project-scoped extension tools.
• Preserved raw provider tool arguments and rejected malformed or hook-mutated
  tool input before execution with structured error results.
• Changed context compression to use the generated summary as the complete
  model-visible history by default, while pairing boundaries and summaries by
  id and keeping their ordering stable.

Fixed

• Fixed compact summaries being missed when message sorting moved them before
  their associated compression boundary.
• Added session and canvas project checks to prevent capability snapshots from
  being reused with the wrong agent run context.