Release preparation: screenshots, demo video, roadmap, and test automation

[costiash]

Summary

This PR prepares CognivAgent for public release with comprehensive documentation updates, visual assets, and pre-release test automation.

Visual Assets

• Screenshots: 6 screenshots (dark/light modes) for Chat, Knowledge Graph, and Transcripts sections
• Demo Video: 5-minute walkthrough of full KG workflow (hosted via GitHub attachments)
• Icon: Moved cognivagent-icon.svg to assets/ folder

Documentation

• Mermaid Diagrams: Styled all 7 diagrams across README and guides with consistent color scheme and neutral gray backgrounds
• Roadmap: Complete rewrite with categorized features, clear statuses (Ready/Needs Design/Future), and contribution invitation
• Good First Issues: Updated with concrete, beginner-friendly tasks

Test Automation

• 3 test scripts: test-docker.sh, test-user-install.sh, test-dev-install.sh
• Docker fixes: Build improvements and health check validation
• Troubleshooting guide: New guides/docker-troubleshooting.md

PR Review Fixes

• Removed hardcoded paths in scripts/README.md
• Updated FFmpeg comment in test-user-install.sh
• Added explanatory comment in .dockerignore
• Softened instructions in prime.md

Files Changed

Category	Files
Assets	assets/ (new folder with icon + 6 screenshots)
README	Updated with screenshots, video, styled diagram, roadmap
Guides	6 files with styled Mermaid diagrams
Scripts	3 test automation scripts + README
Config	.dockerignore, Dockerfile, docker-compose.yml

Test Plan

• All 3 test scripts pass locally
• Screenshots render correctly on GitHub
• Demo video embeds and plays
• Mermaid diagrams render with neutral colors (no yellow backgrounds)
• Roadmap displays cleanly with status legend

[claude]

PR Review: Release Preparation

Overall, this is a well-organized release preparation PR that significantly improves the project's documentation and visual presentation. The changes are focused on documentation and assets with no code logic changes, which limits risk.

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Strengths

1. Excellent Mermaid Diagram Styling
The consistent styling across all 7 diagrams using %%{init: ...}%% directives is a great improvement:

• Neutral color palette avoids the default yellow backgrounds
• Consistent classDef definitions make diagrams visually cohesive
• Emoji prefixes in subgraph labels add visual hierarchy without being excessive

2. Well-Organized Roadmap
The new categorized roadmap with status indicators (Ready/Needs Design/Future) is much more actionable than the previous format. The "invitation to contribute" framing is welcoming to new contributors.

3. Asset Organization
Moving all visual assets to an assets/ folder is good housekeeping and follows common conventions.

4. Screenshot Coverage
Providing both dark and light mode screenshots for each major feature is thorough and helps users understand what they're getting.

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Suggestions

1. Consider Adding alt-text Descriptions
While the screenshot table format works well, the alt-text for images could be more descriptive for accessibility:

<!-- Current -->
![Chat Interface Dark](assets/chat_interface_dark.png)

<!-- Consider -->
![Chat interface showing conversation with AI agent in dark mode](assets/chat_interface_dark.png)

This improves accessibility and SEO.

2. Demo Video Embed Format
The GitHub user-attachments URL works for embedding, but consider adding a fallback link for users who have autoplay disabled or are viewing the README in contexts where the embed doesn't work:

https://github.com/user-attachments/assets/2b4d7f2e-edd0-43b5-8117-50464314be71

[Watch on YouTube](https://youtube.com/...) | [Download MP4](...)

3. Good First Issues - Difficulty Calibration
The "Good First Issues" section marks everything as "Easy" including "Show transcript language in library list" which touches Full Stack (frontend + backend). Consider if "Easy" accurately reflects the effort - it might discourage newcomers if they find it harder than expected.

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Minor Observations

1. Mermaid theme consistency: All diagrams use the same theme variables which is good. The color choices (indigo primary, slate lines) are readable and professional.

2. PR mentions test scripts and docker fixes but I don't see those files in the diff. Were they already merged or will they come in a separate PR?

3. Roadmap completeness: The roadmap is thorough but might benefit from a "Quick Wins" section that's even more specific than "Good First Issues" - e.g., specific function names or file locations.

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Security & Code Quality

• No security concerns: This PR contains only documentation, assets, and Mermaid diagram updates
• No code changes: No logic changes to review for bugs or performance
• Test coverage: N/A - documentation-only PR

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Verdict

LGTM - This PR improves project presentation significantly. The suggestions above are nice-to-haves rather than blockers.

The documentation quality reflects well on the project and should help with community adoption.