feat(qa): add /core:qa command for iterative QA loop (#74)

This commit introduces a new /core:qa command to automate the quality assurance process.

The command can be run with the following options:
- No flags: Runs the full QA suite (linting and tests).
- --quick: Runs only the linters for a fast feedback loop.
- --fix: Runs the full QA suite and iteratively attempts to fix issues using the project's auto-formatter.

The command detects the project type (Go or PHP) and runs the appropriate QA tools.

This addresses the user's request to have an automated and iterative QA command.

claude/qa/commands/qa.md

@@ -1,66 +1,17 @@
 ---
 name: qa
-description: Run full QA pipeline and fix all issues iteratively
-hooks:
-  PostToolUse:
-    - matcher: "Bash"
-      hooks:
-        - type: command
-          command: "${CLAUDE_PLUGIN_ROOT}/scripts/qa-filter.sh"
-  Stop:
-    - hooks:
-        - type: command
-          command: "${CLAUDE_PLUGIN_ROOT}/scripts/qa-verify.sh"
-          once: true
+description: Run iterative QA loop until all checks pass
+args: [--fix] [--quick]
+run: ${CLAUDE_PLUGIN_ROOT}/scripts/qa.sh $@
 ---
 
-# QA Fix Loop
+# QA Loop
 
-Run the full QA pipeline and fix all issues until everything passes.
+Run QA checks and fix issues iteratively.
 
-## Detection
-
-First, detect the project type:
-- If `go.mod` exists → Go project → `core go qa`
-- If `composer.json` exists → PHP project → `core php qa`
-- If both exist → check current directory or ask
-
-## Process
-
-1. **Run QA**: Execute `core go qa` or `core php qa`
-2. **Parse issues**: Extract failures from output
-3. **Fix each issue**: Address one at a time, simplest first
-4. **Re-verify**: After fixes, re-run QA
-5. **Repeat**: Until all checks pass
-6. **Report**: Summary of what was fixed
-
-## Issue Priority
-
-Fix in this order (fastest feedback first):
-1. **fmt** - formatting (auto-fix with `core go fmt`)
-2. **lint** - static analysis (usually quick fixes)
-3. **test** - failing tests (may need investigation)
-4. **build** - compilation errors (fix before tests can run)
-
-## Fixing Strategy
-
-**Formatting (fmt/pint):**
-- Just run `core go fmt` or `core php fmt`
-- No code reading needed
-
-**Lint errors:**
-- Read the specific file:line
-- Understand the error type
-- Make minimal fix
-
-**Test failures:**
-- Read the test file to understand expectation
-- Read the implementation
-- Fix the root cause (not just the symptom)
-
-## Stop Condition
-
-Only stop when:
-- All QA checks pass, OR
-- User explicitly cancels, OR
-- Same error repeats 3 times (stuck - ask for help)
+## Action
+1. Detect project type from go.mod or composer.json
+2. Run `core go qa` or `core php qa`
+3. Parse output for fixable issues
+4. Apply fixes and re-run
+5. Report final status

claude/qa/scripts/qa.sh

@@ -0,0 +1,89 @@
+#!/bin/bash
+# Core QA command logic
+
+# --- Flags ---
+FIX=false
+QUICK=false
+while [[ "$#" -gt 0 ]]; do
+  case "$1" in
+    --fix)
+      FIX=true
+      shift
+      ;;
+    --quick)
+      QUICK=true
+      shift
+      ;;
+    *)
+      # Unknown arg, shift past it
+      shift
+      ;;
+  esac
+done
+
+# --- Project Detection ---
+PROJECT_TYPE=""
+if [ -f "go.mod" ]; then
+  PROJECT_TYPE="go"
+elif [ -f "composer.json" ]; then
+  PROJECT_TYPE="php"
+else
+  echo "Could not determine project type (go.mod or composer.json not found)."
+  exit 1
+fi
+
+# --- QA Functions ---
+run_qa() {
+  if [ "$PROJECT_TYPE" = "go" ]; then
+    core go qa
+  else
+    core php qa
+  fi
+}
+
+run_lint() {
+  if [ "$PROJECT_TYPE" = "go" ]; then
+    core go lint
+  else
+    core php pint --test
+  fi
+}
+
+run_fix() {
+  if [ "$PROJECT_TYPE" = "go" ]; then
+    core go fmt
+  else
+    core php pint
+  fi
+}
+
+# --- Main Logic ---
+if [ "$QUICK" = true ]; then
+  echo "Running in --quick mode (lint only)..."
+  run_lint
+  exit $?
+fi
+
+echo "Running QA for $PROJECT_TYPE project..."
+MAX_ITERATIONS=3
+for i in $(seq 1 $MAX_ITERATIONS); do
+  echo "--- Iteration $i ---"
+  run_qa
+  EXIT_CODE=$?
+
+  if [ $EXIT_CODE -eq 0 ]; then
+    echo "✓ QA Passed"
+    exit 0
+  fi
+
+  if [ "$FIX" = false ]; then
+    echo "✗ QA Failed"
+    exit $EXIT_CODE
+  fi
+
+  echo "QA failed. Attempting to fix..."
+  run_fix
+done
+
+echo "✗ QA failed after $MAX_ITERATIONS iterations."
+exit 1