Files changed

• tests/unit/test_cli_artifact_validate.py

Briefing

You are the Coder Agent.

Based on the rules you must follow in the file .milkyflow/agents/developer/rules_coding_agent.md,
execute exactly one coding task: the task described in
'.milkyflow/agents/developer/prompts/EPIC_1_US_3/4_CLI_ARTIFACT_VALIDATE.md'.

Read the mandatory files listed in the prompt before writing any code. Implement only the
in-scope work, respect the out-of-scope section strictly, write the required tests, run the
validation commands, and save your answer file at the exact path the prompt specifies —
honestly reporting what passed, what failed, and what you could not complete.

Never run git commands. Never edit any README.md. If the prompt contradicts a contract or the
repository state is incompatible with its assumptions, stop and report in the answer file
instead of forcing an implementation.

Output

● Read rules_coding_agent.md
  │ .milkyflow/agents/developer/rules_coding_agent.md
  └ 192 lines read

● Read 4_CLI_ARTIFACT_VALIDATE.md
  │ .milkyflow/agents/developer/prompts/EPIC_1_US_3/4_CLI_ARTIFACT_VALIDATE.md
  └ 252 lines read

Now let me read the other mandatory files:

● Read commands.py
  │ src/backup_cockpit/raw_capture/cli/commands.py
  └ 1 line read

● Read manifest.py
  │ src/backup_cockpit/raw_capture/artifact/manifest.py
  └ 139 lines read

● Read enums.py
  │ src/backup_cockpit/raw_capture/domain/enums.py
  └ 48 lines read

● Read commands.py
  │ src/backup_cockpit/raw_capture/cli/commands.py
  └ L1:100 (100 lines read)

● Read commands.py
  │ src/backup_cockpit/raw_capture/cli/commands.py
  └ L100:400 (301 lines read)

● Read commands.py
  │ src/backup_cockpit/raw_capture/cli/commands.py
  └ L400:600 (201 lines read)

● Read commands.py
  │ src/backup_cockpit/raw_capture/cli/commands.py
  └ L600:700 (74 lines read)

Now I have all the context I need. Let me implement the changes:

● Edit commands.py +3
  └ src/backup_cockpit/raw_capture/cli/commands.py

Now add the handler before the `build_parser` function:

● Edit commands.py +110
  └ src/backup_cockpit/raw_capture/cli/commands.py

Now add the argparse registration at the end of `build_parser`:

● Edit commands.py +10
  └ src/backup_cockpit/raw_capture/cli/commands.py

Now create the test file:

● List existing test files (shell)
  │ ls /home/oem/Documents/Sandbox/Kody/Projects/Backupper/tests/unit/ | head -20
  └ 14 lines…

● Read test_cli_commands.py
  │ tests/unit/test_cli_commands.py
  └ L1:50 (50 lines read)

Now I have a good understanding of test patterns. Let me create the test file:

● Create test_cli_artifact_validate.py +308
  └ tests/unit/test_cli_artifact_validate.py

Now run the validation commands:

● Run pytest on new tests (shell)
  │ PATH=".venv/bin:$PATH" .venv/bin/pytest tests/unit/test_cli_artifact_validate.py -v 2>&1
  └ 11 lines…

All 10 tests pass. Now run ruff and mypy:

● Run ruff and mypy (shell)
  │ .venv/bin/ruff check src/backup_cockpit/raw_capture/cli/commands.py
  │ tests/unit/test_cli_artifact_validate.py 2>&1; .venv/bin/mypy
  │ src/backup_cockpit/raw_capture/cli/commands.py 2>&1
  └ 127 lines…

Fix the issues:

● Read commands.py
  │ src/backup_cockpit/raw_capture/cli/commands.py
  └ L565:600 (36 lines read)

● Edit commands.py +4 -1
  └ src/backup_cockpit/raw_capture/cli/commands.py

● Edit commands.py +2 -1
  └ src/backup_cockpit/raw_capture/cli/commands.py

Now fix the test file:

● Edit test_cli_artifact_validate.py +8 -5
  └ tests/unit/test_cli_artifact_validate.py

Now fix the long lambda line in the test:

● Edit test_cli_artifact_validate.py +4 -1
  └ tests/unit/test_cli_artifact_validate.py

● Run ruff and mypy again (shell)
  │ .venv/bin/ruff check src/backup_cockpit/raw_capture/cli/commands.py
  │ tests/unit/test_cli_artifact_validate.py 2>&1; .venv/bin/mypy
  │ src/backup_cockpit/raw_capture/cli/commands.py 2>&1
  └ 13 lines…

● Edit commands.py +3 -2
  └ src/backup_cockpit/raw_capture/cli/commands.py

● Run ruff and mypy final check (shell)
  │ .venv/bin/ruff check src/backup_cockpit/raw_capture/cli/commands.py
  │ tests/unit/test_cli_artifact_validate.py 2>&1; .venv/bin/mypy
  │ src/backup_cockpit/raw_capture/cli/commands.py 2>&1
  └ 3 lines…

● Final pytest run (shell)
  │ PATH=".venv/bin:$PATH" .venv/bin/pytest tests/unit/test_cli_artifact_validate.py -v 2>&1
  └ 11 lines…

All 10 tests pass, ruff and mypy clean. Now write the answer file and history entry:

● Create answer directory (shell)
  │ mkdir -p /home/oem/Documents/Sandbox/Kody/Projects/Backupper/.milkyflow/agents/developer/answers
  │ /EPIC_1_US_3
  └ 1 line…

● Create 4_CLI_ARTIFACT_VALIDATE.md +79
  └ .milkyflow/agents/developer/answers/EPIC_1_US_3/4_CLI_ARTIFACT_VALIDATE.md

Now append the history row:

● Append history row (shell)
  │ cd /home/oem/Documents/Sandbox/Kody/Projects/Backupper
  │ HISTORY_FILE=".milkyflow/agents/history.md"
  │ if [ ! -f "$HISTORY_FILE" ]; then
  │ echo "| Timestamp | Agent | Scenario | Details |" >> "$HISTORY_FILE"
  │ echo "|-----------|-------|----------|---------|" >> "$HISTORY_FILE"…
  └ 6 lines…

All done. Here's a summary:

## ✅ Task Complete — `4_CLI_ARTIFACT_VALIDATE`

**What was implemented:**
- `_cmd_artifact_validate` handler in `commands.py` — validates artifact integrity via SHA-256 (64 KB chunks), with path-traversal-safe `run_id` validation and proper exit codes (0/1/2).
- `artifact validate` subparser registered in `build_parser()`.

**Results:**
| Validation | Result |
|---|---|
| `pytest` (10 tests) | ✅ 10/10 passed |
| `ruff check` | ✅ All checks passed |
| `mypy` | ✅ No issues found |





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