[codex] Add combined Binance and Polymarket oracle E2E

.agents/skills/gravity-oracle-demo/SKILL.md

@@ -0,0 +1,29 @@
+---
+name: gravity-oracle-demo
+description: Run, demo, or debug the Gravity Binance and Polymarket Oracle E2E suites.
+---
+
+# Gravity Oracle Demo
+
+Use `gravity_e2e/docs/ORACLE_E2E.md` as the canonical suite matrix and
+runbook. Do not duplicate its commands or revision table here.
+
+## Routing
+
+- Use `oracle_demo` for deterministic review or the combined local frontend.
+- Use `polymarket_mock` for three-outcome match settlement and claim behavior.
+- Use `binance_price_feed_multivalidator` for explicitly approved live Binance
+  validation and voting-power quorum.
+
+## Safety
+
+- Ask before public API or RPC traffic unless the user approved that exact run.
+- Never commit credentials, `.env` files, private RPC URLs, user-specific
+  absolute paths, generated runtime config, or cluster artifacts.
+- Use `--force-init` after changing genesis or a pinned contracts revision.
+- Stop clusters started by the current task unless `--keep-running` was
+  explicitly requested.
+
+For real Polymarket mirrors, require a reviewed manifest with frozen rules,
+condition and question IDs, CTF address, outcome labels, slot mapping, source
+block range, and metadata hashes.

.agents/workflows/build-and-test.md

@@ -131,7 +131,14 @@ Genesis artifacts are cached in `cluster_test_cases/<suite>/artifacts/`. Use `--
 
 ---
 
-## 4. Bridge E2E Test Details
+## 4. Oracle E2E
+
+Use `gravity_e2e/docs/ORACLE_E2E.md` for the canonical suite matrix, commands,
+live-network approval boundary, frontend mode, and pinned revisions.
+
+---
+
+## 5. Bridge E2E Test Details
 
 Suite directory: `gravity_e2e/cluster_test_cases/bridge/`
 
@@ -162,7 +169,7 @@ Suite directory: `gravity_e2e/cluster_test_cases/bridge/`
 
 ---
 
-## 5. Running Contract Unit Tests
+## 6. Running Contract Unit Tests
 
 Working directory: `gravity_chain_core_contracts`
 
@@ -179,4 +186,4 @@ forge test --match-path test/unit/integration/ConsensusEngineFlow.t.sol -vvv
 Run specific test function:
 ```bash
 forge test --match-test testBridgeFlow -vvv
-```
+```

.gitignore

@@ -112,6 +112,7 @@ lib/
 
 # Hardhat (if ever used)
 artifacts/
+mock_polymarket_metadata.json
 cache/
 typechain-types/