docs: add missing hook events from official CHANGELOG (v2.1.9-v2.1.10)

- Add 3 missing events to Section 7.1: Setup, PermissionRequest, SubagentStop
- Document PreToolUse additionalContext feature (v2.1.9+)
- Create 3 production-ready hook templates (setup, permission, subagent)
- Add resource evaluation documenting rejection of secondary source

Source: Official Claude Code CHANGELOG, not external blog posts
Closes gap identified during resource evaluation process

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

examples/hooks/bash/setup-init.sh

@@ -0,0 +1,50 @@
+#!/bin/bash
+# setup-init.sh
+# Runs when Claude Code starts (v2.1.10+)
+# Use with --init, --init-only, or --maintenance flags
+
+INPUT=$(cat)
+SESSION_ID=$(echo "$INPUT" | jq -r '.session_id // "unknown"')
+CWD=$(echo "$INPUT" | jq -r '.cwd // "unknown"')
+
+# Create log directory if needed
+LOG_DIR="$HOME/.claude/logs"
+mkdir -p "$LOG_DIR"
+
+# Log startup event
+TIMESTAMP=$(date -u +"%Y-%m-%dT%H:%M:%SZ")
+echo "[$TIMESTAMP] Setup hook triggered - Session: $SESSION_ID - CWD: $CWD" >> "$LOG_DIR/setup.log"
+
+# Check project requirements
+if [[ -f "package.json" ]]; then
+    # Check if node_modules exists
+    if [[ ! -d "node_modules" ]]; then
+        cat << EOF
+{
+  "systemMessage": "⚠️ Project setup incomplete: node_modules missing. Run 'npm install' before continuing.",
+  "hookSpecificOutput": {
+    "additionalContext": "Node.js project detected without dependencies installed."
+  }
+}
+EOF
+        exit 0
+    fi
+fi
+
+# Check git status
+if git rev-parse --git-dir > /dev/null 2>&1; then
+    BRANCH=$(git branch --show-current)
+    UNCOMMITTED=$(git status --short | wc -l | tr -d ' ')
+
+    if [[ $UNCOMMITTED -gt 0 ]]; then
+        cat << EOF
+{
+  "hookSpecificOutput": {
+    "additionalContext": "Git status: On branch $BRANCH with $UNCOMMITTED uncommitted changes."
+  }
+}
+EOF
+    fi
+fi
+
+exit 0