feat(noop-bb): add nix tool installation example and smoke test

[jannymeshi]

Summary

Updates the noop building block to demonstrate the nix-based package installation that is now available in the go runner image (shipped in meshfed-release #9885).

Changes

prerun.sh

• Replaces the old "not supported via apk add" placeholder with a working nix profile add nixpkgs#awscli2 example
• Verifies the installed CLI with aws --version so the runner logs confirm nix works

noop.tftest.hcl (new)

• Smoke test covering all input/output types of the noop building block
• Run locally with tofu test to validate the module applies cleanly
• FILE inputs (some-file.yaml, sensitive-file.yaml) are now included as fixture files so tofu test can run without a live meshStack instance

README.md

• New "Installing Tools in Pre-Run Scripts" section documenting the nix profile add pattern with examples

Related

• Implements remaining items from meshcloud/janny#1099
• Companion to meshfed-release #9885

[github-actions]

🎨 Missing Building Block Icons

Found 2 building block(s) without logo.png files.

Copy the AI Prompts below and use them with your favorite AI image generator (Gemini, DALL-E, Midjourney, Stable Diffusion, etc.).

Then follow the Post-Processing Steps to prepare the icons for upload.

---

Azure Virtual Machine Starterkit

Platform: azure

Path: /home/runner/work/meshstack-hub/meshstack-hub/modules/azure/azure-virtual-machine-starterkit/buildingblock/logo.png

AI Prompt (copy this to image generator)

Create a professional flat design icon for the meshcloud Building Block ecosystem.

Purpose: The Azure Virtual Machine Starterkit provides application teams with a pre-configured Azure environment. It includes a dedicated project, an Azure tenant, and a virtual machine for quick provisioning and testing.

Visual Style:
- Plain white background (#FFFFFF) for easy removal in post-processing
- Background will be converted to transparent (see post-processing steps)
- Use Azure colors: blue (#0078D4), cyan (#00BCF2), and light blue (#50E6FF) as accent colors
- Maximum 2-3 colors total
- Simple geometric shapes with clean lines
- Flat design (no gradients, shadows, or 3D effects)
- Minimalist, modern appearance

Composition:
- Square centered layout (NOT horizontal)
- Icon fills the entire canvas edge-to-edge (100% of area)
- No padding or margins around the icon
- Symmetrical arrangement
- Platform-appropriate symbol for AZURE (e.g., cloud, container, database, server, etc.)

Style: Enterprise professional, instantly recognizable at small sizes, similar to app icons or logos.
Dimensions: 800x800 pixels

Post-Processing Instructions

Step 1: Remove white background with GIMP (free)

a) Open image in GIMP
b) Right-click layer → "Add Alpha Channel"
c) Tools → "Select by Color" (Shift+O)
d) Click white background
e) Press Delete key
f) File → Export As → logo.png
g) Set Compression level to 9 → Export

Step 2: Resize to 800x800 pixels if needed

• GIMP: Image → Scale Image → 800x800px
• Or use any image editor

Step 3: Compress with pngquant (free command line tool)

• Install: brew install pngquant (Mac) or apt install pngquant (Linux)
• Run: pngquant --quality=20-30 logo.png --ext .png --force
• This reduces file size by 60-80% while maintaining quality

Target specs: 800x800px PNG with transparent background, under 100KB

---

Kubernetes Manifest (Helm)

Platform: kubernetes

Path: /home/runner/work/meshstack-hub/meshstack-hub/modules/kubernetes/manifest/buildingblock/logo.png

AI Prompt (copy this to image generator)

Create a professional flat design icon for the meshcloud Building Block ecosystem.

Purpose: Deploys arbitrary Kubernetes manifests into a tenant namespace via a local Helm chart, with operator-supplied templates and user-provided values.

Visual Style:
- Plain white background (#FFFFFF) for easy removal in post-processing
- Background will be converted to transparent (see post-processing steps)
- Use Kubernetes colors: blue (#326CE5), cyan (#00D3E0), and light blue (#7AB8FF) as accent colors
- Maximum 2-3 colors total
- Simple geometric shapes with clean lines
- Flat design (no gradients, shadows, or 3D effects)
- Minimalist, modern appearance

Composition:
- Square centered layout (NOT horizontal)
- Icon fills the entire canvas edge-to-edge (100% of area)
- No padding or margins around the icon
- Symmetrical arrangement
- Platform-appropriate symbol for KUBERNETES (e.g., cloud, container, database, server, etc.)

Style: Enterprise professional, instantly recognizable at small sizes, similar to app icons or logos.
Dimensions: 800x800 pixels

Post-Processing Instructions

Step 1: Remove white background with GIMP (free)

a) Open image in GIMP
b) Right-click layer → "Add Alpha Channel"
c) Tools → "Select by Color" (Shift+O)
d) Click white background
e) Press Delete key
f) File → Export As → logo.png
g) Set Compression level to 9 → Export

Step 2: Resize to 800x800 pixels if needed

• GIMP: Image → Scale Image → 800x800px
• Or use any image editor

Step 3: Compress with pngquant (free command line tool)

• Install: brew install pngquant (Mac) or apt install pngquant (Linux)
• Run: pngquant --quality=20-30 logo.png --ext .png --force
• This reduces file size by 60-80% while maintaining quality

Target specs: 800x800px PNG with transparent background, under 100KB

---

[aws-amplify-eu-central-1]

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[jannymeshi]

Superseded by #166 (commit 54969fa)