Initial commit: OpenFUT Bridge

FIFA 23 reverse-engineering proxy and integration scaffold.

- Catch-all HTTP proxy that captures all incoming FIFA 23 traffic
- Known-route mapper (speculative FUT paths → Core API calls)
- Placeholder JSON responses for unmapped endpoints
- Admin endpoints: GET /_bridge/captures, GET /_bridge/unknown
- Capture persistence to captures/*.json for RE analysis
- 4 unit tests passing

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

docs/endpoint-map.md

@@ -0,0 +1,64 @@
+# FUT → OpenFUT Core Endpoint Map
+
+This document maps confirmed or suspected FIFA 23 FUT API endpoints to their OpenFUT Core equivalents.
+
+## Legend
+
+- ✅ Confirmed + implemented
+- 🟡 Suspected — implemented with placeholder
+- ❌ Unknown — not yet mapped
+
+---
+
+## Auth
+
+| FUT Endpoint | Core Endpoint | Status | Notes |
+|---|---|---|---|
+| `POST /ut/auth` | `POST /auth/local` | 🟡 | EA OAuth flow → local profile creation |
+
+## Profile / Club
+
+| FUT Endpoint | Core Endpoint | Status | Notes |
+|---|---|---|---|
+| `GET /ut/game/fut/user/settings` | `GET /profile` | 🟡 | |
+| `GET /ut/game/fut/usermassinfo` | `GET /club` | 🟡 | EA bulk endpoint |
+
+## Squad
+
+| FUT Endpoint | Core Endpoint | Status | Notes |
+|---|---|---|---|
+| `GET /ut/game/fut/squad/active` | `GET /squad` | 🟡 | |
+| `PUT /ut/game/fut/squad/active` | `POST /squad` | ❌ | |
+
+## Packs
+
+| FUT Endpoint | Core Endpoint | Status | Notes |
+|---|---|---|---|
+| `GET /ut/game/fut/store/packdetails` | `GET /packs` | 🟡 | |
+| `POST /ut/game/fut/pack/buy` | `POST /packs/open/:id` | ❌ | |
+
+## Transfer Market
+
+| FUT Endpoint | Core Endpoint | Status | Notes |
+|---|---|---|---|
+| `GET /ut/game/fut/transfermarket` | `GET /market` | 🟡 | |
+| `DELETE /ut/game/fut/trade/:id` | `POST /market/sell` | ❌ | |
+
+## Matches / Seasons
+
+| FUT Endpoint | Core Endpoint | Status | Notes |
+|---|---|---|---|
+| Unknown | `POST /matches/result` | ❌ | Needs capture |
+
+## Objectives
+
+| FUT Endpoint | Core Endpoint | Status | Notes |
+|---|---|---|---|
+| Unknown | `GET /objectives` | ❌ | Needs capture |
+
+## SBCs
+
+| FUT Endpoint | Core Endpoint | Status | Notes |
+|---|---|---|---|
+| Unknown | `GET /sbc` | ❌ | Needs capture |
+| Unknown | `POST /sbc/submit` | ❌ | Needs capture |