diff --git a/.claude/hooks/audit-log.sh b/.claude/hooks/audit-log.sh
new file mode 100755
index 0000000..25cbae0
--- /dev/null
+++ b/.claude/hooks/audit-log.sh
@@ -0,0 +1,21 @@
+#!/bin/bash
+# Log all Bash commands with timestamp for audit trail
+# Event: PostToolUse | Matcher: Bash
+# Logs to .claude/hooks/audit.log
+
+INPUT=$(cat)
+COMMAND=$(echo "$INPUT" | jq -r '.tool_input.command // empty')
+TOOL_NAME=$(echo "$INPUT" | jq -r '.tool_name // "unknown"')
+
+if [ -z "$COMMAND" ]; then
+  exit 0
+fi
+
+LOG_DIR="$(dirname "$0")"
+LOG_FILE="$LOG_DIR/audit.log"
+
+TIMESTAMP=$(date -u +"%Y-%m-%dT%H:%M:%SZ")
+
+echo "[$TIMESTAMP] [$TOOL_NAME] $COMMAND" >> "$LOG_FILE"
+
+exit 0
diff --git a/.claude/hooks/bash-firewall.sh b/.claude/hooks/bash-firewall.sh
new file mode 100755
index 0000000..91bc89c
--- /dev/null
+++ b/.claude/hooks/bash-firewall.sh
@@ -0,0 +1,36 @@
+#!/bin/bash
+# Block dangerous bash commands
+# Event: PreToolUse | Matcher: Bash
+# Exit 2 = block, Exit 0 = allow
+
+INPUT=$(cat)
+COMMAND=$(echo "$INPUT" | jq -r '.tool_input.command // empty')
+
+if [ -z "$COMMAND" ]; then
+  exit 0
+fi
+
+BLOCKED_PATTERNS=(
+  'rm\s+-rf\s+/'
+  'rm\s+-rf\s+\*'
+  'rm\s+-rf\s+~'
+  'git\s+push\s+.*--force\s+.*main'
+  'git\s+push\s+.*--force\s+.*master'
+  'git\s+reset\s+--hard'
+  'git\s+clean\s+-fd'
+  'chmod\s+-R\s+777'
+  'mkfs\.'
+  '>\s*/dev/sd'
+  'dd\s+if=.*/dev/'
+  ':(){:|:&};:'
+)
+
+for pattern in "${BLOCKED_PATTERNS[@]}"; do
+  if echo "$COMMAND" | grep -qE "$pattern"; then
+    echo "Blocked: dangerous command detected — matches pattern '$pattern'" >&2
+    echo "Command was: $COMMAND" >&2
+    exit 2
+  fi
+done
+
+exit 0
diff --git a/.claude/hooks/post-edit-format.sh b/.claude/hooks/post-edit-format.sh
new file mode 100755
index 0000000..e748776
--- /dev/null
+++ b/.claude/hooks/post-edit-format.sh
@@ -0,0 +1,34 @@
+#!/bin/bash
+# Auto-format files after Edit/Write using Prettier
+# Event: PostToolUse | Matcher: Edit|Write
+# Silently skips if Prettier is not installed or file doesn't exist
+
+INPUT=$(cat)
+FILE_PATH=$(echo "$INPUT" | jq -r '.tool_input.file_path // empty')
+
+if [ -z "$FILE_PATH" ] || [ ! -f "$FILE_PATH" ]; then
+  exit 0
+fi
+
+EXTENSIONS="ts tsx js jsx json css scss html md yaml yml"
+FILE_EXT="${FILE_PATH##*.}"
+
+SHOULD_FORMAT=false
+for ext in $EXTENSIONS; do
+  if [ "$FILE_EXT" = "$ext" ]; then
+    SHOULD_FORMAT=true
+    break
+  fi
+done
+
+if [ "$SHOULD_FORMAT" = false ]; then
+  exit 0
+fi
+
+if command -v npx &>/dev/null && [ -f "node_modules/.bin/prettier" ]; then
+  npx prettier --write "$FILE_PATH" 2>/dev/null
+elif command -v prettier &>/dev/null; then
+  prettier --write "$FILE_PATH" 2>/dev/null
+fi
+
+exit 0
diff --git a/.claude/hooks/protect-files.sh b/.claude/hooks/protect-files.sh
new file mode 100755
index 0000000..f74a248
--- /dev/null
+++ b/.claude/hooks/protect-files.sh
@@ -0,0 +1,34 @@
+#!/bin/bash
+# Protect sensitive files from accidental edits
+# Event: PreToolUse | Matcher: Edit|Write
+# Exit 2 = block, Exit 0 = allow
+
+INPUT=$(cat)
+FILE_PATH=$(echo "$INPUT" | jq -r '.tool_input.file_path // empty')
+
+if [ -z "$FILE_PATH" ]; then
+  exit 0
+fi
+
+PROTECTED_PATTERNS=(
+  ".env"
+  ".env.local"
+  ".env.production"
+  "package-lock.json"
+  "pnpm-lock.yaml"
+  "yarn.lock"
+  ".git/"
+  ".git/config"
+  "id_rsa"
+  "id_ed25519"
+  ".pem"
+)
+
+for pattern in "${PROTECTED_PATTERNS[@]}"; do
+  if [[ "$FILE_PATH" == *"$pattern"* ]]; then
+    echo "Blocked: editing '$FILE_PATH' — matches protected pattern '$pattern'" >&2
+    exit 2
+  fi
+done
+
+exit 0
diff --git a/.claude/settings.json b/.claude/settings.json
new file mode 100644
index 0000000..41fe53a
--- /dev/null
+++ b/.claude/settings.json
@@ -0,0 +1,66 @@
+{
+  "hooks": {
+    "PreToolUse": [
+      {
+        "matcher": "Edit|Write",
+        "hooks": [
+          {
+            "type": "command",
+            "command": "\"$CLAUDE_PROJECT_DIR\"/.claude/hooks/protect-files.sh"
+          }
+        ]
+      },
+      {
+        "matcher": "Bash",
+        "hooks": [
+          {
+            "type": "command",
+            "command": "\"$CLAUDE_PROJECT_DIR\"/.claude/hooks/bash-firewall.sh"
+          }
+        ]
+      }
+    ],
+    "PostToolUse": [
+      {
+        "matcher": "Edit|Write",
+        "hooks": [
+          {
+            "type": "command",
+            "command": "\"$CLAUDE_PROJECT_DIR\"/.claude/hooks/post-edit-format.sh"
+          }
+        ]
+      },
+      {
+        "matcher": "Bash",
+        "hooks": [
+          {
+            "type": "command",
+            "command": "\"$CLAUDE_PROJECT_DIR\"/.claude/hooks/audit-log.sh"
+          }
+        ]
+      }
+    ],
+    "Notification": [
+      {
+        "matcher": "",
+        "hooks": [
+          {
+            "type": "command",
+            "command": "osascript -e 'display notification \"Claude Code ждёт вашего ввода\" with title \"Claude Code\"'"
+          }
+        ]
+      }
+    ],
+    "SessionStart": [
+      {
+        "matcher": "compact",
+        "hooks": [
+          {
+            "type": "command",
+            "command": "echo \"Reminder: check RULES.md and RECOMMENDATIONS.md for project conventions. Current phase: $(grep -m1 'Current Phase' \"$CLAUDE_PROJECT_DIR/docs/phases-plan.md\" 2>/dev/null || echo 'unknown')\""
+          }
+        ]
+      }
+    ]
+  }
+}
diff --git a/.gitignore b/.gitignore
index 25b9b32..7021151 100644
--- a/.gitignore
+++ b/.gitignore
@@ -14,6 +14,9 @@ logs/
 *.pid
 *.pid.lock
 
+# Claude Code hooks audit log
+.claude/hooks/audit.log
+
 # Environment files
 .env
 .env.local
diff --git a/DOCS.md b/DOCS.md
index c05ac59..d8ec024 100644
--- a/DOCS.md
+++ b/DOCS.md
@@ -71,6 +71,31 @@ Technical index for developers and AI agents. Use this as the entry point to all
 - `agents/code-reviewer.md` — code quality and PR review.
 - `agents/prompt-engineer.md` — LLM prompt design and optimization.
 
+## Claude Code Skills (`/.claude/skills`)
+
+- `.claude/skills/update-status/` — sync project status across docs after milestone.
+- `.claude/skills/phase-transition/` — full phase transition with verification.
+- `.claude/skills/init-project/` — interactive project initialization wizard.
+- `.claude/skills/component/` — scaffold accessible React component (frontend-architect).
+- `.claude/skills/a11y-audit/` — WCAG 2.2 AA accessibility audit (frontend-architect).
+- `.claude/skills/api-endpoint/` — scaffold REST API endpoint (backend-architect).
+- `.claude/skills/db-schema/` — design database schema with migration (backend-architect).
+- `.claude/skills/security-audit/` — OWASP security audit of git diff (security-auditor).
+- `.claude/skills/threat-model/` — threat modeling with risk tiers (security-auditor).
+- `.claude/skills/write-tests/` — write tests with Vitest + Testing Library (test-engineer).
+- `.claude/skills/test-plan/` — test strategy and coverage plan (test-engineer).
+- `.claude/skills/review/` — code review of current git diff (code-reviewer).
+- `.claude/skills/review-pr/` — GitHub PR review by number (code-reviewer).
+- `.claude/skills/improve-prompt/` — diagnose and improve LLM prompt (prompt-engineer).
+
+## Claude Code Hooks (`/.claude/hooks`)
+
+- `.claude/hooks/protect-files.sh` — blocks edits to `.env`, lock files, `.git/`, keys.
+- `.claude/hooks/bash-firewall.sh` — blocks destructive commands (`rm -rf /`, `git reset --hard`, etc.).
+- `.claude/hooks/post-edit-format.sh` — auto-formats files with Prettier after edits.
+- `.claude/hooks/audit-log.sh` — logs all Bash commands with timestamp to `audit.log`.
+- `.claude/settings.json` — hooks configuration (also: Notification, SessionStart compact context).
+
 ## GitHub Templates (`/.github`)
 
 - `.github/ISSUE_TEMPLATE/bug_report.md` — bug report template.
diff --git a/README.md b/README.md
index 17728cb..869b380 100644
--- a/README.md
+++ b/README.md
@@ -162,6 +162,14 @@ your-project/
 │   └── api/                       # Backend API (Node.js)
 ├── packages/                      # Shared packages (if monorepo)
 │   └── shared/                    # Types, utils, API client
+├── .claude/                        # Claude Code configuration
+│   ├── settings.json              # Hooks configuration
+│   ├── hooks/                     # Hook scripts
+│   │   ├── protect-files.sh       # Block edits to sensitive files
+│   │   ├── bash-firewall.sh       # Block dangerous commands
+│   │   ├── post-edit-format.sh    # Auto-format after edits
+│   │   └── audit-log.sh           # Log all Bash commands
+│   └── skills/                    # Slash-command skills (14 total)
 ├── .editorconfig                  # Editor formatting standards
 ├── .env.example                   # Environment variables template
 ├── package.json                   # Project metadata & engines