[bug] v 2.0.0a2 - Diagnostic collection fails

### Bug Description

--diagnostics zip file creation failed:

`$ nac-test -d data -d .terraform/modules/catalyst_center/defaults/ -t templates -o ../results --diagnostic`

```
=== Creating Summary ===
  Performing final credential masking...

Creating archive: /tmp/nac-test-diagnostics-XFLr1C.zip
/home/arc2/sudoku/repos/.venv/lib/python3.12/site-packages/nac_test/support/nac-test-diagnostic.sh: line 850: zip: command not found

╔══════════════════════════════════════════════════════════════════╗
║              DIAGNOSTIC COLLECTION COMPLETE                       ║
╚══════════════════════════════════════════════════════════════════╝

Archive: /tmp/nac-test-diagnostics-XFLr1C.zip
ls: cannot access '/tmp/nac-test-diagnostics-XFLr1C.zip': No such file or directory
Size: 
Files: 55

Platform: Ubuntu 24.04.4 LTS
Architecture: Catalyst Center

Please send the file '/tmp/nac-test-diagnostics-XFLr1C.zip' for analysis.
NOTE: Credentials have been masked in all text, JSON, and log files.

⚠️  IMPORTANT: PyATS archive files (.zip) contain raw execution logs
   that MAY INCLUDE CREDENTIALS if debug logging was enabled.
   Please review archive contents before sharing if concerned.
```
The issue was fixed after installing zip: `sudo apt install zip unzip`

SW: WSL2 on Windows11


### Test Framework

Robot Framework (.robot or .j2 templates)

### Test Type (PyATS Only)

None

### Network as Code (NaC) Architecture

Catalyst Center (DNA Center)

### Operating System

Linux

### OS Version

WSL2

### Installation Method

uv (uv pip install nac-test)

### System Information Output

```text
=== Creating Summary ===
  Performing final credential masking...

Creating archive: /tmp/nac-test-diagnostics-XFLr1C.zip
/home/arc2/sudoku/repos/.venv/lib/python3.12/site-packages/nac_test/support/nac-test-diagnostic.sh: line 850: zip: command not found

╔══════════════════════════════════════════════════════════════════╗
║              DIAGNOSTIC COLLECTION COMPLETE                       ║
╚══════════════════════════════════════════════════════════════════╝

Archive: /tmp/nac-test-diagnostics-XFLr1C.zip
ls: cannot access '/tmp/nac-test-diagnostics-XFLr1C.zip': No such file or directory
Size: 
Files: 55

Platform: Ubuntu 24.04.4 LTS
Architecture: Catalyst Center

Please send the file '/tmp/nac-test-diagnostics-XFLr1C.zip' for analysis.
NOTE: Credentials have been masked in all text, JSON, and log files.

⚠️  IMPORTANT: PyATS archive files (.zip) contain raw execution logs
   that MAY INCLUDE CREDENTIALS if debug logging was enabled.
   Please review archive contents before sharing if concerned.
```

### Environment Variables Output

```bash
NA
```

### Reproduction Steps

see description

### Command Used

```bash
nac-test -d data -d .terraform/modules/catalyst_center/defaults/ -t templates -o ../results --diagnostic

$ nac-test --version
nac-test, version 2.0.0a2
```

### Data Model Snippet (if relevant)

```yaml

```

### Expected Behavior

Starting nac-test execution...


nac-test execution completed
  Exit code: 0
  Duration: 18s

=== Collecting nac-test Output ===
  Collecting: 110_pyats_archives
  Copied 0 recent PyATS archives
  Collecting: 120_robot_outputs
  Copied 40 Robot Framework output files

=== Creating Summary ===
  Performing final credential masking...

Creating archive: /tmp/nac-test-diagnostics-oomARS.zip

╔══════════════════════════════════════════════════════════════════╗
║              DIAGNOSTIC COLLECTION COMPLETE                       ║
╚══════════════════════════════════════════════════════════════════╝

Archive: /tmp/nac-test-diagnostics-oomARS.zip
Size: 628K
Files: 55

Platform: Ubuntu 24.04.4 LTS
Architecture: Catalyst Center

Please send the file '/tmp/nac-test-diagnostics-oomARS.zip' for analysis.
NOTE: Credentials have been masked in all text, JSON, and log files.

⚠️  IMPORTANT: PyATS archive files (.zip) contain raw execution logs
   that MAY INCLUDE CREDENTIALS if debug logging was enabled.
   Please review archive contents before sharing if concerned.


### Actual Behavior / Terminal Output

```text
$ nac-test -d data_c_0.4.1 -d data_c2_0.4.1 -d .terraform/modules/catalyst_center/defaults/ -t templates -o ../results --diagnostic
Running diagnostic collection...

╔══════════════════════════════════════════════════════════════════╗
║        NAC-Test Diagnostic Collection v5.0                       ║
║              Architecture-Agnostic Edition                        ║
╚══════════════════════════════════════════════════════════════════╝

=== NAC-Test Diagnostic Collection v5.0 ===
Timestamp: Thu Mar 19 17:54:00 CET 2026
Platform: Ubuntu 24.04.4 LTS
Architecture: Catalyst Center

Output directory: ../results
nac-test command: /home/arc2/sudoku/repos/.venv/bin/nac-test -d data_c_0.4.1 -d data_c2_0.4.1 -d .terraform/modules/catalyst_center/defaults/ -t templates -o ../results

=== Verifying Environment ===
  Virtual environment: /home/arc2/sudoku/repos/.venv
  nac-test found: /home/arc2/sudoku/repos/.venv/bin/nac-test

=== Environment Variable Status ===
  Collecting: 010_env_var_status

=== Collecting System Information ===
  Collecting: 020_system_info
  Collecting: 021_linux_details

=== Collecting Python Environment ===
  Collecting: 030_python_version
  Collecting: 031_python_path
  Collecting: 032_pip_packages
  Collecting: 033_nac_packages
  Collecting: 034_pyats_version

=== Collecting Multiprocessing Configuration ===
  Collecting: 040_mp_start_method

=== Collecting PyATS Configuration ===
  Collecting: 050_pyats_config

=== Collecting Network Configuration ===
  Collecting: 060_ssl_certs

╔══════════════════════════════════════════════════════════════════╗
║              EXECUTING NAC-TEST COMMAND                          ║
╚══════════════════════════════════════════════════════════════════╝

Command: /home/arc2/sudoku/repos/.venv/bin/nac-test -d data_c_0.4.1 -d data_c2_0.4.1 -d .terraform/modules/catalyst_center/defaults/ -t templates -o ../results
Output directory: ../results

Starting nac-test execution...


nac-test execution completed
  Exit code: 0
  Duration: 17s

=== Collecting nac-test Output ===
  Collecting: 110_pyats_archives
  Copied 0 recent PyATS archives
  Collecting: 120_robot_outputs
  Copied 40 Robot Framework output files

=== Creating Summary ===
  Performing final credential masking...

Creating archive: /tmp/nac-test-diagnostics-XFLr1C.zip
/home/arc2/sudoku/repos/.venv/lib/python3.12/site-packages/nac_test/support/nac-test-diagnostic.sh: line 850: zip: command not found

╔══════════════════════════════════════════════════════════════════╗
║              DIAGNOSTIC COLLECTION COMPLETE                       ║
╚══════════════════════════════════════════════════════════════════╝

Archive: /tmp/nac-test-diagnostics-XFLr1C.zip
ls: cannot access '/tmp/nac-test-diagnostics-XFLr1C.zip': No such file or directory
Size: 
Files: 55

Platform: Ubuntu 24.04.4 LTS
Architecture: Catalyst Center

Please send the file '/tmp/nac-test-diagnostics-XFLr1C.zip' for analysis.
NOTE: Credentials have been masked in all text, JSON, and log files.

⚠️  IMPORTANT: PyATS archive files (.zip) contain raw execution logs
   that MAY INCLUDE CREDENTIALS if debug logging was enabled.
   Please review archive contents before sharing if concerned.
```

### Troubleshooting Attempted

- [ ] Verified environment variables are set correctly
- [ ] Tried with `NAC_TEST_DEBUG=true` for verbose output
- [ ] Checked file permissions on data/test directories
- [ ] Tested with a minimal data model
- [ ] Verified controller is reachable

### Other Troubleshooting Attempted

_No response_

### Project Directory Structure

```text

```

### Additional Context

_No response_

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[bug] v 2.0.0a2 - Diagnostic collection fails #664

Bug Description

Test Framework

Test Type (PyATS Only)

Network as Code (NaC) Architecture

Operating System

OS Version

Installation Method

System Information Output

Environment Variables Output

Reproduction Steps

Command Used

Data Model Snippet (if relevant)

Expected Behavior

Actual Behavior / Terminal Output

Troubleshooting Attempted

Other Troubleshooting Attempted

Project Directory Structure

Additional Context

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

[bug] v 2.0.0a2 - Diagnostic collection fails #664

Description

Bug Description

Test Framework

Test Type (PyATS Only)

Network as Code (NaC) Architecture

Operating System

OS Version

Installation Method

System Information Output

Environment Variables Output

Reproduction Steps

Command Used

Data Model Snippet (if relevant)

Expected Behavior

Actual Behavior / Terminal Output

Troubleshooting Attempted

Other Troubleshooting Attempted

Project Directory Structure

Additional Context

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Issue actions