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feat: implement multi-source location extraction for enhanced node coloring

Problem

  • 68% of nodes appeared gray due to insufficient location information
  • LSP semantic analysis only covered ~30 nodes out of 94 total

Solution

  • Hybrid architecture: Tree-sitter for structure + multi-source LSP enhancement
  • Three-tier location extraction:
    1. Primary LSP semantic tokens (~30 locations)
    2. Hover-based analysis at operator positions (~20-40 additional)
    3. Default assignments for remaining nodes (100% coverage)

Key Changes

  • lspGraphExtractor.ts: Replaced LSP-first with hybrid tree-sitter + LSP approach
  • locationAnalyzer.ts: Added hover-first strategy with fallback coordination
  • lspAnalyzer.ts: Added analyzePositions() method for hover-based type extraction
  • package.json: Moved operator config from hardcoded to VS Code settings
  • updateOperators.js: Utility script to scan Hydro codebase for operators

Technical Improvements

  • Hover text parsing with regex patterns for location types
  • Smart deduplication between LSP sources
  • Default location assignment (networking→Cluster, sources→Process, etc.)
  • Enhanced tree-sitter variable binding and chain parsing
  • Dual hierarchy system (Location + Code structure)

Impact

  • Expected: 53-74% node coloring (up from 32%)
  • Guaranteed: 100% nodes get location assignment
  • Better network edge visualization with semantic tagging