feat: web dashboard UI for local KCPNode (knowledge browser)

[tgosoul2019]

Context

Suggested by Gemini 2.0 during LLM evaluation. A visual interface dramatically lowers the barrier to adoption.

Problem

Currently, KCP is entirely CLI/API-driven. There's no way for non-technical users (or technical users who prefer a GUI) to:

• Browse their knowledge base
• See the lineage DAG visually
• Search with a text input
• Inspect artifact signatures and metadata

Proposed Solution

A single-file ui/index.html served by kcp serve at http://localhost:8800/ui.

Features

Knowledge Browser

• List all artifacts with title, tags, date, format badge
• Full-text search with highlighting
• Filter by: tag, format, visibility, date range

Lineage Visualizer

• Interactive DAG using D3.js or Cytoscape.js
• Click a node to see artifact details
• Highlight derivation chains

Artifact Inspector

• View full content (markdown rendered)
• Show cryptographic signature + content hash
• Copy artifact_id to clipboard
• One-click kcp_get / kcp_lineage output

Stats Panel

• Total artifacts, by format, by tag
• Storage size
• Last 5 published

Implementation Notes

• Single HTML file (no build step, no npm) — same philosophy as KCP itself
• Uses fetch() against the local kcp serve HTTP API
• Works offline (all local)

Acceptance Criteria

• sdk/python/kcp/ui/index.html — single-file web app
• Served at /ui by kcp serve
• Knowledge list + search
• Artifact detail view with signature verification status
• Basic lineage tree view
• Works on latest Chrome, Firefox, Safari

Related

• sdk/python/kcp/cli.py (serve command)
• Suggested by: Gemini 2.0