refactor: move all remaining files to orig/ directory

Completed clean root directory structure:
- Root now contains only: .git, .env, docs/, orig/
- Moved all remaining files and directories to orig/:
  - Config files (.claude, .dockerignore, .drone.yml, etc.)
  - All .env variants (except active .env)
  - Git config (.gitconfig, .github, .gitignore, etc.)
  - Tool configs (.golangci.yml, .revive.toml, etc.)
  - Documentation (*.md files, @prompts)
  - Build files (Dockerfiles, Makefile, go.mod, go.sum)
  - Docker compose files
  - All source directories (scripts, tests, tools, etc.)
  - Runtime directories (logs, monitoring, reports)
  - Dependency files (node_modules, lib, cache)
  - Special files (--delete)

- Removed empty runtime directories (bin/, data/)

V2 structure is now clean:
- docs/planning/ - V2 planning documents
- orig/ - Complete V1 codebase preserved
- .env - Active environment config (not in git)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

orig/tools/math-audit/vectors/balancer_wbtc_usdc.json

@@ -0,0 +1,25 @@
+{
+  "name": "balancer_wbtc_usdc",
+  "description": "Simplified Balancer 50/50 weighted pool",
+  "pool": {
+    "address": "0x0000000000000000000000000000000000000007",
+    "exchange": "balancer",
+    "token0": { "symbol": "WBTC", "decimals": 18 },
+    "token1": { "symbol": "USDC", "decimals": 18 },
+    "reserve0": { "value": "100000000000000000000", "decimals": 18, "symbol": "WBTC" },
+    "reserve1": { "value": "100000000000000000000", "decimals": 18, "symbol": "USDC" },
+    "weights": [
+      { "value": "5", "decimals": 1, "symbol": "W0" },
+      { "value": "5", "decimals": 1, "symbol": "W1" }
+    ]
+  },
+  "tests": [
+    {
+      "name": "amount_out_0_001_wbtc",
+      "type": "amount_out",
+      "amount_in": { "value": "1000000000000000000", "decimals": 18, "symbol": "WBTC" },
+      "expected": { "value": "1000000000000000000", "decimals": 18, "symbol": "USDC" },
+      "tolerance_bps": 1
+    }
+  ]
+}