Setup Ralph.

loop.sh

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+#!/usr/bin/env bash
+# ABOUTME: Ralph outer loop script for autonomous development.
+# ABOUTME: Runs Claude in headless mode, iterating on IMPLEMENTATION_PLAN.md.
+
+# Usage: ./loop.sh [plan] [max_iterations]
+# Examples:
+#   ./loop.sh           # Build mode, unlimited iterations
+#   ./loop.sh 20        # Build mode, max 20 iterations
+#   ./loop.sh plan      # Plan mode, unlimited iterations
+#   ./loop.sh plan 5    # Plan mode, max 5 iterations
+
+set -e
+
+# Parse arguments
+if [ "$1" = "plan" ]; then
+    MODE="plan"
+    PROMPT_FILE="PROMPT_plan.md"
+    MAX_ITERATIONS=${2:-0}
+elif [[ "$1" =~ ^[0-9]+$ ]]; then
+    MODE="build"
+    PROMPT_FILE="PROMPT_build.md"
+    MAX_ITERATIONS=$1
+else
+    MODE="build"
+    PROMPT_FILE="PROMPT_build.md"
+    MAX_ITERATIONS=0
+fi
+
+ITERATION=0
+CURRENT_BRANCH=$(git branch --show-current)
+
+echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
+echo "🔄 Ralph Loop Starting"
+echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
+echo "Mode: $MODE"
+echo "Prompt: $PROMPT_FILE"
+echo "Branch: $CURRENT_BRANCH"
+[ $MAX_ITERATIONS -gt 0 ] && echo "Max iterations: $MAX_ITERATIONS"
+echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
+
+# Verify prompt file exists
+if [ ! -f "$PROMPT_FILE" ]; then
+    echo "Error: $PROMPT_FILE not found"
+    exit 1
+fi
+
+# Verify we're in a git repo
+if ! git rev-parse --git-dir > /dev/null 2>&1; then
+    echo "Error: Not in a git repository"
+    exit 1
+fi
+
+while true; do
+    if [ $MAX_ITERATIONS -gt 0 ] && [ $ITERATION -ge $MAX_ITERATIONS ]; then
+        echo ""
+        echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
+        echo "✅ Reached max iterations: $MAX_ITERATIONS"
+        echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
+        break
+    fi
+
+    ITERATION=$((ITERATION + 1))
+    echo ""
+    echo "═══════════════════════════════════════════"
+    echo "🔄 ITERATION $ITERATION"
+    echo "═══════════════════════════════════════════"
+    echo ""
+
+    # Run Ralph iteration with selected prompt
+    # -p: Headless mode (non-interactive, reads from stdin)
+    # --dangerously-skip-permissions: Auto-approve all tool calls
+    # --output-format=stream-json: Structured output for logging
+    # --model opus: Use Opus for complex reasoning
+    cat "$PROMPT_FILE" | claude -p \
+        --dangerously-skip-permissions \
+        --output-format=stream-json \
+        --model opus \
+        --verbose
+
+    # Push changes after each iteration
+    if git diff --quiet && git diff --cached --quiet; then
+        echo "No changes to push"
+    else
+        git push origin "$CURRENT_BRANCH" 2>/dev/null || {
+            echo "Creating remote branch..."
+            git push -u origin "$CURRENT_BRANCH"
+        }
+    fi
+
+    echo ""
+    echo "───────────────────────────────────────────"
+    echo "Iteration $ITERATION complete"
+    echo "───────────────────────────────────────────"
+done
+
+echo ""
+echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
+echo "🏁 Ralph Loop Complete"
+echo "Total iterations: $ITERATION"
+echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"