v0.2.0: relations preview, item shop, abilities, overlay recommend, GSI enhancements

- Add relations/item/abilities preview (serve_relations.py + web/relations/)
- Add fetch scripts: hero_items, item_shop, items_meta, hero_abilities,
  ability_videos, patches, stratz, matchups, portraits
- Add overlay.py (role tags + Top-3 cyan marks), recommend.py
- Add http_utils.py, loc_format.py, hero_tags.py, item_fears.py
- GSI: full payload JSONL dump, foreground window detection
- Drop real template library; CDN-only matching
- Update docs: CHANGELOG 0.2.0, DESIGN config table, AGENTS module table
- .gitignore: exclude large regenerable assets (icons/portraits/videos)

.gitignore

@@ -13,3 +13,25 @@ preview/
 results/
 failures/
 samples/raw/
+_tools/
+_tmp_*
+_cmp_*
+plans/
+*_log.txt
+
+# Regenerable data caches / reports (re-fetch or re-run scripts)
+data/matchups.json
+data/synergies.json
+data/stratz_matchups.json
+data/relations_audit.json
+data/relations_import_report.json
+data/relations_patch_*
+
+# Large regenerable CDN media (fetch scripts)
+assets/ability_videos/
+assets/ability_icons/
+assets/hero_portraits/
+assets/item_icons/
+
+# Static site export (export_relations_site.py)
+dist/