feat: major feature updates and cleanup

- Add Redis architecture implementation
- Update browser extension functionality
- Clean up deprecated files and documentation
- Enhance backend handlers for auth, messages, search
- Add new configuration options and settings
- Update Docker and deployment configurations

redis.conf

@@ -0,0 +1,231 @@
+# Redis Configuration for Trackeep
+# 
+# This configuration is optimized for a self-hosted productivity application
+# with moderate concurrent user load (< 1000 users).
+
+# =============================================================================
+# NETWORK
+# =============================================================================
+
+# Accept connections on all interfaces (safe when behind Docker network)
+bind 0.0.0.0
+
+# Default port
+port 6379
+
+# TCP listen() backlog
+# Increase if Redis is slow to accept connections under high load
+tcp-backlog 511
+
+# Unix socket (alternative to TCP, not used in Docker)
+# unixsocket /tmp/redis.sock
+# unixsocketperm 700
+
+# Close connection after N seconds of idle time (0 = disabled)
+timeout 0
+
+# TCP keepalive
+# Useful for detecting dead peers
+tcp-keepalive 300
+
+# =============================================================================
+# SECURITY
+# =============================================================================
+
+# Require password for connections
+# Set via environment variable: requirepass ${REDIS_PASSWORD}
+# requirepass changeme
+
+# ACL configuration (Redis 6+)
+# user default on >password ~* &* +@all
+
+# Disable dangerous commands in production
+rename-command FLUSHDB ""
+rename-command FLUSHALL ""
+rename-command CONFIG "CONFIG_9f8a2b3c"
+rename-command DEBUG ""
+rename-command SHUTDOWN "SHUTDOWN_7d4e1f9a"
+
+# =============================================================================
+# MEMORY MANAGEMENT
+# =============================================================================
+
+# Maximum memory limit (256MB suitable for small-medium deployments)
+# Adjust based on available RAM and usage patterns
+maxmemory 256mb
+
+# Eviction policy when maxmemory is reached
+# allkeys-lru: Remove less recently used keys first (recommended for caching)
+# volatile-lru: Remove less recently used keys with expire set
+# allkeys-random: Random key removal
+# volatile-random: Random key removal from expired set
+# allkeys-lfu: Remove least frequently used keys
+# volatile-lfu: Remove least frequently used keys with expire set
+# volatile-ttl: Remove keys with shortest TTL
+# noeviction: Return errors on write operations
+maxmemory-policy allkeys-lru
+
+# Samples for LRU/LFU eviction
+# Higher = more accurate but slower
+maxmemory-samples 5
+
+# Replica ignore maxmemory (don't evict on replicas)
+replica-ignore-maxmemory yes
+
+# =============================================================================
+# PERSISTENCE (RDB)
+# =============================================================================
+
+# Save to disk after N seconds if at least M keys changed
+# Save every 15 minutes if at least 1 key changed
+save 900 1
+
+# Save every 5 minutes if at least 10 keys changed
+save 300 10
+
+# Save every minute if at least 10000 keys changed
+save 60 10000
+
+# Stop writes if RDB save fails
+stop-writes-on-bgsave-error yes
+
+# Compress RDB files
+rdbcompression yes
+
+# Checksum RDB files
+rdbchecksum yes
+
+# RDB file name
+dbfilename dump.rdb
+
+# Working directory for RDB/AOF
+dir /data
+
+# =============================================================================
+# PERSISTENCE (AOF)
+# =============================================================================
+
+# Enable AOF persistence (recommended for session durability)
+appendonly yes
+
+# AOF file name
+appendfilename "appendonly.aof"
+
+# Sync strategy:
+# always: Sync every write (safest, slowest)
+# everysec: Sync once per second (recommended balance)
+# no: Let OS decide when to sync (fastest, less safe)
+appendfsync everysec
+
+# Don't fsync if a bg save is in progress
+no-appendfsync-on-rewrite no
+
+# Auto-rewrite AOF when it grows by X%
+auto-aof-rewrite-percentage 100
+
+# Minimum size before auto-rewrite
+auto-aof-rewrite-min-size 64mb
+
+# Load truncated AOF on startup
+aof-load-truncated yes
+
+# Use RDB preamble in AOF for faster rewrites
+aof-use-rdb-preamble yes
+
+# =============================================================================
+# REPLICATION (for future Sentinel/Cluster setup)
+# =============================================================================
+
+# Replica of another Redis instance
+# replicaof <masterip> <masterport>
+
+# Master authentication
+# masterauth <master-password>
+
+# Replica read-only (default yes)
+replica-read-only yes
+
+# Diskless replication
+repl-diskless-sync no
+repl-diskless-sync-delay 5
+
+# Replica priority (lower = preferred for failover)
+replica-priority 100
+
+# =============================================================================
+# CLIENTS
+# =============================================================================
+
+# Maximum number of client connections
+# Increase if you have many concurrent users
+maxclients 10000
+
+# =============================================================================
+# PERFORMANCE TUNING
+# =============================================================================
+
+# Number of databases (default 16)
+databases 16
+
+# Disable THP (Transparent Huge Pages)
+# This should be done at OS level, but Redis warns about it
+
+# Latency monitoring
+latency-monitor-threshold 100
+
+# Slow log (log queries taking > N microseconds)
+slowlog-log-slower-than 10000
+
+# Slow log max length
+slowlog-max-len 128
+
+# Event notification (for cache invalidation patterns)
+# Enable keyspace notifications for specific events
+notify-keyspace-events Ex
+
+# =============================================================================
+# LOGGING
+# =============================================================================
+
+# Log level: debug, verbose, notice, warning
+loglevel notice
+
+# Log file (empty = stdout, good for Docker)
+logfile ""
+
+# Syslog (disabled for Docker)
+# syslog-enabled no
+
+# =============================================================================
+# LAZY FREEING
+# =============================================================================
+
+# Use lazy freeing for better performance
+lazyfree-lazy-eviction yes
+lazyfree-lazy-expire yes
+lazyfree-lazy-server-del yes
+replica-lazy-flush yes
+
+# =============================================================================
+# KERNEL OOM CONTROL
+# =============================================================================
+
+# Control OOM killer behavior
+oom-score-adj no
+oom-score-adj-values 0 200 800
+
+# =============================================================================
+# I/O THREADING (Redis 6+)
+# =============================================================================
+
+# Enable I/O threads for better multi-core utilization
+# Only useful with very high load
+# io-threads 4
+# io-threads-do-reads yes
+
+# =============================================================================
+# APPEND ONLY (Docker-specific)
+# =============================================================================
+
+# Disable THP warning in container environment
+# (Transparent Huge Pages should be disabled at host level)