feat(synth-overlay): expand to 5min/15min markets and ETH/SOL assets

[bitloi]

Summary

Expand the synth-overlay Chrome extension tool to support:

1. 5-minute and 15-minute markets — new up/down horizons from the Synth API
2. ETH and SOL assets — multi-asset support for all up/down market types (daily, hourly, 15min, 5min)

This implementation preserves the existing dual-horizon analysis (1h vs 24h cross-comparison) for daily/hourly markets while adding single-horizon analysis with reference-horizon context for the new 5min/15min markets.

Key Changes

Component	Changes
synth_client/client.py	Added get_polymarket_5min(), get_polymarket_15min(); added asset param to daily/hourly methods
tools/synth-overlay/matcher.py	Added MARKET_5MIN, MARKET_15MIN detection; added short prefixes (btc-, eth-, sol-) for asset extraction
tools/synth-overlay/server.py	Refactored to handle all market types × assets; preserves dual-horizon for daily/hourly, uses single-horizon for 5min/15min
tools/synth-overlay/analyzer.py	Added analyze_single_horizon() with cross-horizon reference and horizon-appropriate invalidation text
tools/synth-overlay/extension/	Updated UI for dynamic horizon labels, asset display, and both response formats
mock_data/polymarket/	Added 10 new mock files for 5min/15min × BTC/ETH/SOL and daily/hourly × ETH/SOL

Demo Video

https://screenrec.com/share/oGic2vSunU

Demo covers:

• BTC 5min market — single-horizon analysis with 15min reference context
• BTC 15min market — horizon-specific invalidation text, 1h reference
• ETH 5min market — multi-asset support, signal conflict detection
• SOL 5min market — low confidence warning, reference disagreement
• Side panel showing asset, horizon, edge, confidence, and invalidation

Related Issues

Closes #11

Type of Change

• Bug fix
• Improvement to existing tool
• Documentation
• Other (describe below)

Testing

• Tested against Synth API
• Manually tested
• Tests added/updated

Test Results

.venv/bin/python -m pytest tools/synth-overlay/tests/ -v
# 80 passed, 1 warning in 0.19s

New tests added:

• TestSingleHorizonAnalysis (6 tests) — covers single-horizon edge extraction, reference confirmation/conflict, horizon-specific invalidation text
• Server tests for 5min/15min endpoints with field assertions
• Dual-horizon field preservation tests for daily/hourly

Verification Steps

1. Start the server:

   python tools/synth-overlay/server.py

2. Test API endpoints:

   # BTC daily (dual-horizon response)
   curl -s "http://127.0.0.1:8765/api/edge?slug=bitcoin-up-or-down-on-february-26" | jq
   
   # ETH 15-minute (single-horizon response)
   curl -s "http://127.0.0.1:8765/api/edge?slug=eth-updown-15m-1772204400" | jq
   
   # SOL 5-minute
   curl -s "http://127.0.0.1:8765/api/edge?slug=sol-updown-5m-1772205000" | jq

3. Load extension in Chrome:

   • Extensions → Load unpacked → select tools/synth-overlay/extension
   • Navigate to Polymarket pages with different assets/horizons
   • Verify side panel displays correct asset, horizon, and signals

Checklist

• Code follows project style guidelines
• Self-review completed
• Changes are documented (if applicable)

Files Changed

File	Purpose
synth_client/client.py	Add 5min/15min methods, asset param to existing methods
tools/synth-overlay/server.py	Handle all market types with correct analysis path
tools/synth-overlay/analyzer.py	Add analyze_single_horizon() with reference context
tools/synth-overlay/matcher.py	Add 5min/15min detection and short asset prefixes
tools/synth-overlay/extension/sidepanel.html	Dynamic horizon/asset UI elements
tools/synth-overlay/extension/sidepanel.js	Handle both dual-horizon and single-horizon responses
tools/synth-overlay/README.md	Updated API usage documentation
tools/synth-overlay/tests/test_analyzer.py	6 new tests for single-horizon analysis
tools/synth-overlay/tests/test_matcher.py	Tests for 5min/15min detection and short prefixes
tools/synth-overlay/tests/test_server.py	Tests for new endpoints and field assertions
mock_data/polymarket/*.json	10 new mock files for expanded coverage

[bitloi]

Hi @e35ventura Please check the pr and give me your feedback.
Thank you.