fix: verify Lambda MicroVM teardown observability

[dubh3124]

Summary

• verifies Lambda MicroVM teardown before reporting completion
• emits token-free launch/auth/healthcheck/runtime/teardown lifecycle phases
• reports teardown_complete, teardown_pending, or teardown_failed based on adapter metadata
• frees Cognition-side quota even when teardown is pending
• prepares 0.11.0-rc.5 source metadata for the next pre-release image

Validation

• PYTHONPATH=/tmp/cognition-microvm-teardown-pr UV_CACHE_DIR=/tmp/uv-cache uv run pytest tests/unit/test_aws_lambda_microvm_sandbox.py tests/unit/test_sandbox_lifecycle_quotas.py tests/unit/api/test_message_runtime_persistence.py -q
• PYTHONPATH=/tmp/cognition-microvm-teardown-pr UV_CACHE_DIR=/tmp/uv-cache uv run ruff check packages/langchain-aws-lambda-microvms server/app tests/unit
• PYTHONPATH=/tmp/cognition-microvm-teardown-pr UV_CACHE_DIR=/tmp/uv-cache uv run mkdocs build --strict
• PYTHONPATH=/tmp/cognition-microvm-teardown-pr UV_CACHE_DIR=/tmp/uv-cache uv run mypy .
• git diff --check

Notes

After this PR is merged, run the pre-release image workflow for version 0.11.0 with prerelease tag rc5, then deploy ghcr.io/cognicellai/cognition:0.11.0-rc5 into the local k3d Lambda MicroVM test environment.

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Project	Deployment	Actions	Updated (UTC)
cognition	Ready	Preview, Comment	Jul 10, 2026 6:32am