surfaces/.planning/phases/04-matrix-mvp-shared-agent-context-and-context-management-comma/04-03-SUMMARY.md

phase	plan	subsystem	tags	requires	provides	affects	tech-stack	key-files	key-decisions	patterns-established	requirements-completed	duration	completed
04-matrix-mvp-shared-agent-context-and-context-management-comma	03	infra	docker docker-compose matrix uv lambda-agent-api	phase provides 04-01 Matrix MVP runtime and environment model	Matrix bot Docker image definition Single-service docker-compose setup for matrix-bot Env template entries for Agent API base URLs and real backend selection	deployment matrix local-dev	added patterns Dockerfile docker-compose uv-managed container install with system Python runtime local path install for lambda_agent_api	created modified Dockerfile docker-compose.yml .env.example	Kept compose scoped to matrix-bot only; platform-agent remains external to this stack. Set UV_PROJECT_ENVIRONMENT=/usr/local so uv-installed dependencies are available to CMD ["python", "-m", "adapter.matrix.bot"].	Install project dependencies with uv inside the container, then install lambda_agent_api from external/platform-agent_api via pip --ignore-requires-python.	Dockerfile for Matrix bot docker-compose.yml with matrix-bot service .env.example updated with AGENT_BASE_URL and MATRIX_PLATFORM_BACKEND	6min	2026-04-17

Phase 4 Plan 03: Matrix Bot Containerization Summary

Python 3.11 Matrix bot container with uv-managed app dependencies, local lambda_agent_api install bypass, and a single-service compose entrypoint

Performance

• Duration: 6 min
• Started: 2026-04-17T13:01:00Z
• Completed: 2026-04-17T13:07:04Z
• Tasks: 1
• Files modified: 4

Accomplishments

• Added a root Dockerfile for the Matrix bot using python:3.11-slim.
• Added docker-compose.yml with a single matrix-bot service using env_file: .env.
• Extended .env.example with AGENT_WS_URL, AGENT_BASE_URL, and MATRIX_PLATFORM_BACKEND=real.

Files Created/Modified

• Dockerfile - Builds the Matrix bot image, installs project dependencies with uv, and installs lambda_agent_api from the local external/ tree.
• docker-compose.yml - Defines the matrix-bot service with restart policy and .env loading.
• .env.example - Documents the agent WebSocket URL, agent HTTP base URL, and real backend selector.

Decisions Made

• Kept the compose scope limited to the Matrix bot, matching the phase boundary and excluding platform services.
• Added UV_PROJECT_ENVIRONMENT=/usr/local as a correctness fix so uv sync installs are visible to the final python runtime.

Deviations from Plan

Auto-fixed Issues

1. [Rule 2 - Missing Critical] Ensured uv installs are available to the container runtime

• Found during: Task 1 (Create Dockerfile and docker-compose.yml)
• Issue: The plan sketch used uv sync plus CMD ["python", ...]; by default, uv sync would install into a virtual environment that system python would not use.
• Fix: Set UV_PROJECT_ENVIRONMENT=/usr/local in the Dockerfile before running uv sync.
• Files modified: Dockerfile
• Verification: Required grep checks passed and the generated compose config remained valid.

---

Total deviations: 1 auto-fixed (1 missing critical) Impact on plan: Narrow correctness fix only. No scope expansion.

Issues Encountered

• docker compose config resolved values from the local .env, so verification was kept to config rendering and grep-style checks rather than a full image build.

User Setup Required

• Create .env from .env.example with real Matrix and agent values before running docker compose up.

Next Phase Readiness

• Matrix bot container packaging is in place and ready for operator-supplied secrets plus an external platform-agent deployment.
• No code changes were made outside the allowed containerization files.

Verification

• grep 'python:3.11-slim' Dockerfile
• grep 'ignore-requires-python' Dockerfile
• grep 'PYTHONPATH=/app' Dockerfile
• grep 'adapter.matrix.bot' Dockerfile
• grep 'matrix-bot' docker-compose.yml
• grep 'env_file' docker-compose.yml
• grep 'AGENT_BASE_URL' .env.example
• grep 'AGENT_WS_URL' .env.example
• grep 'MATRIX_PLATFORM_BACKEND' .env.example
• docker compose -f docker-compose.yml config

Self-Check: PASSED

• Found Dockerfile
• Found docker-compose.yml
• Found updated .env.example
• Found .planning/phases/04-matrix-mvp-shared-agent-context-and-context-management-comma/04-03-SUMMARY.md