Update README to reflect changes in test infrastructure organization and task decomposition workflow. Remove obsolete E2E test templates and clarify input specifications for integration tests. Enhance documentation for planning and implementation phases, including new directory structures and task management processes.

.cursor/skills/plan/templates/integration-environment.md

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+# E2E Test Environment Template
+
+Save as `PLANS_DIR/integration_tests/environment.md`.
+
+---
+
+```markdown
+# E2E Test Environment
+
+## Overview
+
+**System under test**: [main system name and entry points — API URLs, message queues, serial ports, etc.]
+**Consumer app purpose**: Standalone application that exercises the main system through its public interfaces, validating end-to-end use cases without access to internals.
+
+## Docker Environment
+
+### Services
+
+| Service | Image / Build | Purpose | Ports |
+|---------|--------------|---------|-------|
+| system-under-test | [main app image or build context] | The main system being tested | [ports] |
+| test-db | [postgres/mysql/etc.] | Database for the main system | [ports] |
+| e2e-consumer | [build context for consumer app] | Black-box test runner | — |
+| [dependency] | [image] | [purpose — cache, queue, mock, etc.] | [ports] |
+
+### Networks
+
+| Network | Services | Purpose |
+|---------|----------|---------|
+| e2e-net | all | Isolated test network |
+
+### Volumes
+
+| Volume | Mounted to | Purpose |
+|--------|-----------|---------|
+| [name] | [service:path] | [test data, DB persistence, etc.] |
+
+### docker-compose structure
+
+```yaml
+# Outline only — not runnable code
+services:
+  system-under-test:
+    # main system
+  test-db:
+    # database
+  e2e-consumer:
+    # consumer test app
+    depends_on:
+      - system-under-test
+```
+
+## Consumer Application
+
+**Tech stack**: [language, framework, test runner]
+**Entry point**: [how it starts — e.g., pytest, jest, custom runner]
+
+### Communication with system under test
+
+| Interface | Protocol | Endpoint / Topic | Authentication |
+|-----------|----------|-----------------|----------------|
+| [API name] | [HTTP/gRPC/AMQP/etc.] | [URL or topic] | [method] |
+
+### What the consumer does NOT have access to
+
+- No direct database access to the main system
+- No internal module imports
+- No shared memory or file system with the main system
+
+## CI/CD Integration
+
+**When to run**: [e.g., on PR merge to dev, nightly, before production deploy]
+**Pipeline stage**: [where in the CI pipeline this fits]
+**Gate behavior**: [block merge / warning only / manual approval]
+**Timeout**: [max total suite duration before considered failed]
+
+## Reporting
+
+**Format**: CSV
+**Columns**: Test ID, Test Name, Execution Time (ms), Result (PASS/FAIL/SKIP), Error Message (if FAIL)
+**Output path**: [where the CSV is written — e.g., ./e2e-results/report.csv]
+```
+
+---
+
+## Guidance Notes
+
+- The consumer app must treat the main system as a true black box — no internal imports, no direct DB queries against the main system's database.
+- Docker environment should be self-contained — `docker compose up` must be sufficient to run the full suite.
+- If the main system requires external services (payment gateways, third-party APIs), define mock/stub services in the Docker environment.