[Config] Add coding guidelines and code-fixer agent

Major additions:
- Add CODING_GUIDELINES.md with "NO EMOJIS" rule
- Create code-fixer agent for automated violation fixes
- Add offline mode v2 hooks with local caching/queue
- Add periodic context save with invisible Task Scheduler setup
- Add agent coordination rules and database connection docs

Infrastructure:
- Update hooks: task-complete-v2, user-prompt-submit-v2
- Add periodic_save_check.py for auto-save every 5min
- Add PowerShell scripts: setup_periodic_save.ps1, update_to_invisible.ps1
- Add sync-contexts script for queue synchronization

Documentation:
- OFFLINE_MODE.md, PERIODIC_SAVE_INVISIBLE_SETUP.md
- Migration procedures and verification docs
- Fix flashing window guide

Updates:
- Update agent configs (backup, code-review, coding, database, gitea, testing)
- Update claude.md with coding guidelines reference
- Update .gitignore for new cache/queue directories

Status: Pre-automated-fixer baseline commit

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

scripts/upgrade-to-offline-mode.sh

@@ -0,0 +1,169 @@
+#!/bin/bash
+#
+# Upgrade ClaudeTools Hooks to Offline-Capable Version
+# Migrates from v1 hooks to v2 hooks with local storage fallback
+#
+# Usage: bash scripts/upgrade-to-offline-mode.sh
+#
+
+set -e
+
+echo "=========================================="
+echo "ClaudeTools Offline Mode Upgrade"
+echo "=========================================="
+echo ""
+echo "This script will upgrade your hooks to support offline operation."
+echo ""
+
+# Detect project root
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PROJECT_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
+HOOKS_DIR="$PROJECT_ROOT/.claude/hooks"
+
+echo "Project root: $PROJECT_ROOT"
+echo ""
+
+# Check if hooks directory exists
+if [ ! -d "$HOOKS_DIR" ]; then
+    echo "❌ ERROR: Hooks directory not found at $HOOKS_DIR"
+    exit 1
+fi
+
+# Step 1: Backup existing hooks
+echo "[1/5] Backing up existing hooks..."
+BACKUP_DIR="$HOOKS_DIR/backup_$(date +%Y%m%d_%H%M%S)"
+mkdir -p "$BACKUP_DIR"
+
+if [ -f "$HOOKS_DIR/user-prompt-submit" ]; then
+    cp "$HOOKS_DIR/user-prompt-submit" "$BACKUP_DIR/"
+    echo "  ✓ Backed up user-prompt-submit"
+fi
+
+if [ -f "$HOOKS_DIR/task-complete" ]; then
+    cp "$HOOKS_DIR/task-complete" "$BACKUP_DIR/"
+    echo "  ✓ Backed up task-complete"
+fi
+
+echo "  Backup location: $BACKUP_DIR"
+echo ""
+
+# Step 2: Install new hooks
+echo "[2/5] Installing offline-capable hooks..."
+
+if [ -f "$HOOKS_DIR/user-prompt-submit-v2" ]; then
+    cp "$HOOKS_DIR/user-prompt-submit-v2" "$HOOKS_DIR/user-prompt-submit"
+    chmod +x "$HOOKS_DIR/user-prompt-submit"
+    echo "  ✓ Installed user-prompt-submit (v2)"
+else
+    echo "  ⚠ Warning: user-prompt-submit-v2 not found"
+fi
+
+if [ -f "$HOOKS_DIR/task-complete-v2" ]; then
+    cp "$HOOKS_DIR/task-complete-v2" "$HOOKS_DIR/task-complete"
+    chmod +x "$HOOKS_DIR/task-complete"
+    echo "  ✓ Installed task-complete (v2)"
+else
+    echo "  ⚠ Warning: task-complete-v2 not found"
+fi
+
+if [ -f "$HOOKS_DIR/sync-contexts" ]; then
+    chmod +x "$HOOKS_DIR/sync-contexts"
+    echo "  ✓ Made sync-contexts executable"
+else
+    echo "  ⚠ Warning: sync-contexts not found"
+fi
+
+echo ""
+
+# Step 3: Create storage directories
+echo "[3/5] Creating local storage directories..."
+mkdir -p "$PROJECT_ROOT/.claude/context-cache"
+mkdir -p "$PROJECT_ROOT/.claude/context-queue/pending"
+mkdir -p "$PROJECT_ROOT/.claude/context-queue/uploaded"
+mkdir -p "$PROJECT_ROOT/.claude/context-queue/failed"
+echo "  ✓ Created .claude/context-cache/"
+echo "  ✓ Created .claude/context-queue/{pending,uploaded,failed}/"
+echo ""
+
+# Step 4: Update .gitignore
+echo "[4/5] Updating .gitignore..."
+GITIGNORE="$PROJECT_ROOT/.gitignore"
+
+if [ -f "$GITIGNORE" ]; then
+    # Check if entries already exist
+    if ! grep -q "\.claude/context-cache/" "$GITIGNORE" 2>/dev/null; then
+        echo "" >> "$GITIGNORE"
+        echo "# Context recall local storage (offline mode)" >> "$GITIGNORE"
+        echo ".claude/context-cache/" >> "$GITIGNORE"
+        echo ".claude/context-queue/" >> "$GITIGNORE"
+        echo "  ✓ Added entries to .gitignore"
+    else
+        echo "  ℹ .gitignore already updated"
+    fi
+else
+    echo "  ⚠ Warning: .gitignore not found"
+fi
+
+echo ""
+
+# Step 5: Verification
+echo "[5/5] Verifying installation..."
+
+VERIFICATION_PASSED=true
+
+# Check hooks are executable
+if [ ! -x "$HOOKS_DIR/user-prompt-submit" ]; then
+    echo "  ✗ user-prompt-submit is not executable"
+    VERIFICATION_PASSED=false
+fi
+
+if [ ! -x "$HOOKS_DIR/task-complete" ]; then
+    echo "  ✗ task-complete is not executable"
+    VERIFICATION_PASSED=false
+fi
+
+if [ ! -x "$HOOKS_DIR/sync-contexts" ]; then
+    echo "  ✗ sync-contexts is not executable"
+    VERIFICATION_PASSED=false
+fi
+
+# Check directories exist
+if [ ! -d "$PROJECT_ROOT/.claude/context-cache" ]; then
+    echo "  ✗ context-cache directory missing"
+    VERIFICATION_PASSED=false
+fi
+
+if [ ! -d "$PROJECT_ROOT/.claude/context-queue/pending" ]; then
+    echo "  ✗ context-queue/pending directory missing"
+    VERIFICATION_PASSED=false
+fi
+
+if [ "$VERIFICATION_PASSED" = "true" ]; then
+    echo "  ✓ All checks passed"
+else
+    echo "  ⚠ Some checks failed - please review"
+fi
+
+echo ""
+echo "=========================================="
+echo "Upgrade Complete!"
+echo "=========================================="
+echo ""
+echo "✅ Offline mode is now active!"
+echo ""
+echo "Features enabled:"
+echo "  • Context caching for offline reading"
+echo "  • Context queuing when API unavailable"
+echo "  • Automatic sync when API restored"
+echo ""
+echo "Next steps:"
+echo "  1. Use Claude Code normally - offline support is automatic"
+echo "  2. Review documentation: .claude/OFFLINE_MODE.md"
+echo "  3. Test offline mode by stopping the API temporarily"
+echo ""
+echo "Manual sync command:"
+echo "  bash .claude/hooks/sync-contexts"
+echo ""
+echo "Rollback (if needed):"
+echo "  cp $BACKUP_DIR/* .claude/hooks/"
+echo ""