v1.13.0

Tracks Symbiont runtime v1.13.0.

Added

• .symbi agent file extension in the symbi agent create CLI: .symbi is the canonical extension as of Symbiont runtime v1.12.0; the CLI now accepts .symbi alongside .json and the legacy .dsl. Existing .dsl workflows continue to work indefinitely.

Changed

• Version bump to track Symbiont runtime v1.13.0. The HTTP surface is unchanged since v1.11.x — no other client code changes required to consume new runtime features:
  • symbi fmt subcommand for canonical .symbi formatting
  • tree-sitter grammar v2 covering the full DSL surface
  • LLM API keys via SecretStore (OPENROUTER_API_KEY_REF, OPENAI_API_KEY_REF, ANTHROPIC_API_KEY_REF)
  • SecurityTier::Hosted variant for E2B
  • ToolClad agent_summary typestate fence
  • symbi-invis-strip 0.2.0 with expanded INJECTION_MARKERS
  • slack signature timestamp overflow fix

Editor stack went standalone in this cycle

• tree-sitter-symbiont v0.1.0 on npm and crates.io
• vscode-symbiont v0.1.0 with a TextMate grammar (.vsix attached to its release)