[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>

.claude/hooks/user-prompt-submit.v1.backup

@@ -0,0 +1,119 @@
+#!/bin/bash
+#
+# Claude Code Hook: user-prompt-submit
+# Runs BEFORE each user message is processed
+# Injects relevant context from the database into the conversation
+#
+# Expected environment variables:
+#   CLAUDE_PROJECT_ID - UUID of the current project
+#   JWT_TOKEN - Authentication token for API
+#   CLAUDE_API_URL - API base URL (default: http://localhost:8000)
+#   CONTEXT_RECALL_ENABLED - Set to "false" to disable (default: true)
+#   MIN_RELEVANCE_SCORE - Minimum score for context (default: 5.0)
+#   MAX_CONTEXTS - Maximum number of contexts to retrieve (default: 10)
+#
+
+# Load configuration if exists
+CONFIG_FILE="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)/context-recall-config.env"
+if [ -f "$CONFIG_FILE" ]; then
+    source "$CONFIG_FILE"
+fi
+
+# Default values
+API_URL="${CLAUDE_API_URL:-http://localhost:8000}"
+ENABLED="${CONTEXT_RECALL_ENABLED:-true}"
+MIN_SCORE="${MIN_RELEVANCE_SCORE:-5.0}"
+MAX_ITEMS="${MAX_CONTEXTS:-10}"
+
+# Exit early if disabled
+if [ "$ENABLED" != "true" ]; then
+    exit 0
+fi
+
+# Detect project ID from git repo if not set
+if [ -z "$CLAUDE_PROJECT_ID" ]; then
+    # Try to get from git config
+    PROJECT_ID=$(git config --local claude.projectid 2>/dev/null)
+
+    if [ -z "$PROJECT_ID" ]; then
+        # Try to derive from git remote URL
+        GIT_REMOTE=$(git config --get remote.origin.url 2>/dev/null)
+        if [ -n "$GIT_REMOTE" ]; then
+            # Hash the remote URL to create a consistent ID
+            PROJECT_ID=$(echo -n "$GIT_REMOTE" | md5sum | cut -d' ' -f1)
+        fi
+    fi
+else
+    PROJECT_ID="$CLAUDE_PROJECT_ID"
+fi
+
+# Exit if no project ID available
+if [ -z "$PROJECT_ID" ]; then
+    # Silent exit - no context available
+    exit 0
+fi
+
+# Exit if no JWT token
+if [ -z "$JWT_TOKEN" ]; then
+    exit 0
+fi
+
+# Build API request URL
+RECALL_URL="${API_URL}/api/conversation-contexts/recall"
+QUERY_PARAMS="project_id=${PROJECT_ID}&limit=${MAX_ITEMS}&min_relevance_score=${MIN_SCORE}"
+
+# Fetch context from API (with timeout and error handling)
+CONTEXT_RESPONSE=$(curl -s --max-time 3 \
+    "${RECALL_URL}?${QUERY_PARAMS}" \
+    -H "Authorization: Bearer ${JWT_TOKEN}" \
+    -H "Accept: application/json" 2>/dev/null)
+
+# Check if request was successful
+if [ $? -ne 0 ] || [ -z "$CONTEXT_RESPONSE" ]; then
+    # Silent failure - API unavailable
+    exit 0
+fi
+
+# Parse and format context (expects JSON array of context objects)
+# Example response: [{"title": "...", "dense_summary": "...", "relevance_score": 8.5}, ...]
+CONTEXT_COUNT=$(echo "$CONTEXT_RESPONSE" | grep -o '"id"' | wc -l)
+
+if [ "$CONTEXT_COUNT" -gt 0 ]; then
+    echo "<!-- Context Recall: Retrieved $CONTEXT_COUNT relevant context(s) -->"
+    echo ""
+    echo "## 📚 Previous Context"
+    echo ""
+    echo "The following context has been automatically recalled from previous sessions:"
+    echo ""
+
+    # Extract and format each context entry
+    # Note: This uses simple text parsing. For production, consider using jq if available.
+    echo "$CONTEXT_RESPONSE" | python3 -c "
+import sys, json
+try:
+    contexts = json.load(sys.stdin)
+    if isinstance(contexts, list):
+        for i, ctx in enumerate(contexts, 1):
+            title = ctx.get('title', 'Untitled')
+            summary = ctx.get('dense_summary', '')
+            score = ctx.get('relevance_score', 0)
+            ctx_type = ctx.get('context_type', 'unknown')
+
+            print(f'### {i}. {title} (Score: {score}/10)')
+            print(f'*Type: {ctx_type}*')
+            print()
+            print(summary)
+            print()
+            print('---')
+            print()
+except:
+    pass
+" 2>/dev/null
+
+    echo ""
+    echo "*This context was automatically injected to help maintain continuity across sessions.*"
+    echo ""
+fi
+
+# Exit successfully
+exit 0