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/scripts/extract_multicall_fixture.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+LOG_FILE=${1:-logs/diagnostics/multicall_samples.log}
+LIMIT=${2:-10}
+
+if [[ ! -f "$LOG_FILE" ]]; then
+  echo "No diagnostic log found at $LOG_FILE" >&2
+  exit 1
+fi
+
+echo "Found entries (showing up to $LIMIT):"
+awk '{print NR"|"$0}' "$LOG_FILE" | tail -n "$LIMIT"
+
+echo "\nTo fetch calldata for an entry (requires network + API key):"
+echo "  export ARBISCAN_API_KEY=<your_key>"
+echo "  ./scripts/fetch_arbiscan_tx.sh <tx_hash> | jq -r '.result.input'"