feat: add deploy skill with build/flash guide and helper scripts

- SKILL.md: full deployment guide covering prerequisites, config,
  build, flash, verification, OTA, and troubleshooting
- deploy.sh: one-command build+flash script with auto port detection
- validate.sh: pre-deploy checklist (ESP-IDF, secrets, hardware)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

skills/deploy/scripts/validate.sh

@@ -0,0 +1,106 @@
+#!/usr/bin/env bash
+# MimiClaw Deployment Validator
+# Usage: ./skills/deploy/scripts/validate.sh
+#
+# Checks that all prerequisites are met before building.
+
+set -euo pipefail
+
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+NC='\033[0m'
+
+pass() { echo -e "  ${GREEN}✓${NC} $*"; }
+fail() { echo -e "  ${RED}✗${NC} $*"; ERRORS=$((ERRORS + 1)); }
+warn() { echo -e "  ${YELLOW}!${NC} $*"; }
+
+ERRORS=0
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+PROJECT_ROOT="$(cd "$SCRIPT_DIR/../../.." && pwd)"
+cd "$PROJECT_ROOT"
+
+echo "MimiClaw Deployment Validator"
+echo "============================="
+echo ""
+
+# 1. ESP-IDF
+echo "ESP-IDF:"
+if command -v idf.py &>/dev/null; then
+    VER=$(idf.py --version 2>&1 | head -1)
+    pass "idf.py found: $VER"
+else
+    fail "idf.py not found — source \$IDF_PATH/export.sh"
+fi
+
+# 2. Project files
+echo "Project:"
+if [ -f main/mimi_config.h ]; then
+    pass "main/mimi_config.h exists"
+else
+    fail "main/mimi_config.h missing — wrong directory?"
+fi
+
+if [ -f partitions.csv ]; then
+    pass "partitions.csv exists"
+else
+    fail "partitions.csv missing"
+fi
+
+# 3. Secrets
+echo "Secrets:"
+if [ -f main/mimi_secrets.h ]; then
+    pass "main/mimi_secrets.h exists"
+
+    # Check individual fields
+    if grep -q 'MIMI_SECRET_WIFI_SSID.*""' main/mimi_secrets.h; then
+        fail "WiFi SSID is empty"
+    else
+        pass "WiFi SSID configured"
+    fi
+
+    if grep -q 'MIMI_SECRET_TG_TOKEN.*""' main/mimi_secrets.h; then
+        fail "Telegram token is empty"
+    else
+        pass "Telegram token configured"
+    fi
+
+    if grep -q 'MIMI_SECRET_API_KEY.*""' main/mimi_secrets.h; then
+        fail "Anthropic API key is empty"
+    else
+        pass "Anthropic API key configured"
+    fi
+
+    if grep -q 'MIMI_SECRET_SEARCH_KEY.*""' main/mimi_secrets.h; then
+        warn "Brave Search key not set (web_search will be unavailable)"
+    else
+        pass "Brave Search key configured"
+    fi
+else
+    fail "main/mimi_secrets.h missing — run: cp main/mimi_secrets.h.example main/mimi_secrets.h"
+fi
+
+# 4. Serial port
+echo "Hardware:"
+PORTS=""
+if [ "$(uname)" = "Darwin" ]; then
+    PORTS=$(ls /dev/cu.usbmodem* 2>/dev/null || true)
+else
+    PORTS=$(ls /dev/ttyACM* /dev/ttyUSB* 2>/dev/null || true)
+fi
+
+if [ -n "$PORTS" ]; then
+    pass "Serial port found: $(echo "$PORTS" | head -1)"
+else
+    warn "No ESP32 serial port detected (plug in the board to flash)"
+fi
+
+# Summary
+echo ""
+if [ $ERRORS -eq 0 ]; then
+    echo -e "${GREEN}All checks passed!${NC} Ready to build and flash."
+    echo "  Run: ./skills/deploy/scripts/deploy.sh"
+else
+    echo -e "${RED}$ERRORS issue(s) found.${NC} Fix them before deploying."
+fi