[Epic] Component Marketplace

[Mbeaulne]

Problem

Today, finding components in Tangle is guesswork. Search is frontend-only and matches titles exactly, so users miss existing components and create duplicates. There's no lifecycle (active/deprecated/superseded), no team ownership, no way to curate or share libraries, and no detail view for context before adding a component.

This epic introduces backend-powered search, structured publishing with lifecycle, and team-scoped libraries with sharing.

Sub-tickets

Phase 0 — Telemetry baseline

• Instrument current frontend search
• Instrument component creation events
• Capture search query telemetry server-side
• Define baseline metrics + dashboard
• Report for components that are missing meta data (descriptions etc)

Phase 1 — Search & Discovery

• Semantic search API endpoint
• Search index over name, description, tags, metadata
• AI-derived component descriptions
• Marketplace search UI
• Filters + preview cards
• Migrate frontend search to new backend endpoint
• Update MCP search_components / get_component

Phase 2 — Publishing & Lifecycle

• Component / PublishedComponent data model
• Lifecycle state machine (active, deprecated, superseded)
• Publish workflow API
• Publish flow UI
• Lifecycle badges in search + detail
• Deprecation / supersedence indicators

Phase 3 — Libraries, Pinning & Sharing

• Library data model (nestable, owner / co-owner)
• Permissions model for team-scoped libraries
• Team ownership + transfer model
• Personal pinning
• Shareable component links
• Library management UI
• Ownership transfer UI
• Pinning UI
• Share link UI
• Collections in search results
• Component detail panel (usage, examples, compatible components)