# Enhanced Error Recovery System

## Legend
| Symbol | Meaning | | Abbrev | Meaning |
|--------|---------|---|--------|---------|
| 🔄 | retry/recovery | | err | error |
| ⚠ | warning/caution | | rec | recovery |
| ✅ | success/fixed | | fail | failure |
| 🔧 | repair/fix | | ctx | context |

## Intelligent Retry Strategies

```yaml
Error_Classification:
  Transient_Errors:
    Network_Timeouts: "MCP server unreachable, API timeouts"
    Resource_Busy: "File locked, system overloaded"
    Rate_Limits: "API quota exceeded, temporary blocks"
    
  Permanent_Errors:
    Syntax_Errors: "Invalid code, malformed input"
    Permission_Denied: "Access restrictions, auth failures"
    Not_Found: "Missing files, invalid paths"
    
  Context_Errors:
    Configuration: "Invalid settings, missing dependencies"
    State_Conflicts: "Dirty working tree, merge conflicts"
    Version_Mismatch: "Incompatible versions, deprecated APIs"

Retry_Logic:
  Exponential_Backoff:
    Base_Delay: "1 second"
    Max_Delay: "60 seconds"  
    Max_Attempts: "3 for transient, 1 for permanent"
    Jitter: "±25% randomization to avoid thundering herd"
    
  Adaptive_Strategy:
    Network_Errors: "Retry w/ longer timeout"
    Rate_Limits: "Wait for reset period + retry"
    Resource_Busy: "Short delay + retry w/ alternative"
    Permanent: "No retry, immediate fallback"
```

## MCP Server Failover

```yaml
Failover_Hierarchy:
  Context7_Failure:
    Primary: "C7 documentation lookup"
    Fallback_1: "WebSearch official docs"
    Fallback_2: "Local cache if available"
    Fallback_3: "Continue w/ warning + note limitation"
    
  Sequential_Failure:
    Primary: "Sequential thinking server"
    Fallback_1: "Native step-by-step analysis"
    Fallback_2: "Simplified linear approach"
    Fallback_3: "Manual breakdown w/ user input"
    
  Magic_Failure:
    Primary: "Magic UI component generation"
    Fallback_1: "Search existing components in project"
    Fallback_2: "Generate basic template manually"
    Fallback_3: "Provide implementation guidance"
    
  Puppeteer_Failure:
    Primary: "Browser automation & testing"
    Fallback_1: "Manual test instructions"
    Fallback_2: "Static analysis alternatives"
    Fallback_3: "Skip browser-specific operations"

Server_Health_Monitoring:
  Availability_Check:
    Frequency: "Every 5 minutes during active use"
    Timeout: "3 seconds per check"
    Circuit_Breaker: "Disable after 3 consecutive failures"
    Recovery_Check: "Re-enable after 5 minutes"
    
  Performance_Degradation:
    Slow_Response: ">30s response time"
    Action: "Switch to faster alternative if available"
    Notification: "Inform user of performance impact"
```

## Context Preservation

```yaml
Operation_Checkpoints:
  Before_Risky_Operations:
    Create_Checkpoint: "Save current state before destructive ops"
    Include: "File states, working directory, command context"
    Location: ".claudedocs/checkpoints/checkpoint-<timestamp>"
    
  During_Command_Chains:
    Intermediate_Results: "Save results after each successful step"
    Context_Handoff: "Pass validated context to next command"
    Rollback_Points: "Mark safe restoration points"
    
  Failure_Recovery:
    Partial_Completion: "Preserve completed work"
    State_Analysis: "Determine safe rollback point"
    User_Options: "Present recovery choices"

Context_Resilience:
  Session_State:
    Persistent_Storage: "Maintain state across interruptions"
    Auto_Save: "Periodic context snapshots"
    Recovery: "Restore from last known good state"
    
  Command_Chain_Recovery:
    Failed_Step_Isolation: "Don't lose previous successful steps"
    Alternative_Paths: "Suggest different approaches for failed step"
    Partial_Results: "Use completed work in recovery strategy"
```

## Proactive Error Prevention

```yaml
Pre_Execution_Validation:
  Environment_Check:
    Required_Tools: "Verify dependencies before starting"
    Permissions: "Check access rights for planned operations"
    Disk_Space: "Ensure adequate space for outputs"
    Network: "Verify connectivity for remote operations"
    
  Conflict_Detection:
    File_Locks: "Check for locked files before editing"
    Git_State: "Verify clean working tree for git ops"
    Process_Conflicts: "Detect conflicting background processes"
    
  Resource_Availability:
    Memory_Usage: "Ensure adequate RAM for large operations"
    CPU_Load: "Warn if system under heavy load"
    Token_Budget: "Estimate token usage vs available quota"

Risk_Assessment:
  Operation_Scoring:
    Data_Loss_Risk: "1-10 scale based on destructiveness"
    Reversibility: "Can operation be undone?"
    Scope_Impact: "How many files/systems affected?"
    
  Mitigation_Requirements:
    High_Risk: "Require explicit confirmation + backup"
    Medium_Risk: "Warn user + create checkpoint"
    Low_Risk: "Proceed w/ monitoring"
```

## Enhanced Error Reporting

```yaml
Intelligent_Error_Messages:
  Root_Cause_Analysis:
    Technical_Details: "Specific error codes, stack traces"
    User_Context: "What user was trying to accomplish"
    Environmental_Factors: "System state, recent changes"
    
  Actionable_Guidance:
    Immediate_Steps: "What user can do right now"
    Alternative_Approaches: "Different ways to achieve goal"
    Prevention: "How to avoid this error in future"
    
  Context_Preservation:
    Session_Info: "Command history, current state"
    Relevant_Files: "Which files were being processed"
    System_State: "Git status, dependency versions"

Error_Learning:
  Pattern_Recognition:
    Frequent_Issues: "Track commonly occurring errors"
    User_Patterns: "Learn user-specific failure modes"
    System_Patterns: "Identify environment-specific issues"
    
  Adaptive_Responses:
    Personalized_Suggestions: "Based on user's history"
    Proactive_Warnings: "Predict likely issues"
    Automated_Fixes: "Apply known solutions automatically"
```

## Implementation Integration

```yaml
Command_Wrapper_Enhancement:
  Error_Boundary:
    Catch_All_Errors: "Wrap every operation in try/catch"
    Classify_Error: "Determine error type & appropriate response"
    Apply_Strategy: "Retry, failover, or graceful degradation"
    
  Context_Management:
    Save_State: "Before each significant operation"
    Track_Progress: "Monitor completion of multi-step processes"
    Restore_State: "On failure, return to last good state"
    
Recovery_Commands:
  Manual_Recovery: "/user:recover --from-checkpoint"
  Status_Check: "/user:recovery-status"
  Clear_State: "/user:recovery-clear"
  
Integration_Points:
  All_Commands: "Enhanced error handling built into every command"
  MCP_Servers: "Automatic failover & circuit breaker patterns"
  User_Experience: "Seamless recovery w/ minimal interruption"
```

## Usage Examples

```yaml
Network_Failure_Scenario:
  Error: "Context7 server timeout during docs lookup"
  Recovery: "Auto-fallback to WebSearch → local cache"
  User_Experience: "⚠ Using cached docs (Context7 unavailable)"
  
File_Lock_Scenario:
  Error: "Cannot edit file (locked by another process)"
  Recovery: "Wait 5s → retry → suggest alternatives"
  User_Experience: "Retrying in 5s... or try manual edit"
  
Command_Chain_Failure:
  Error: "Step 3 of 5 fails in build workflow"
  Recovery: "Preserve steps 1-2, suggest alternatives for 3"
  User_Experience: "Build partially complete. Alternative approaches: ..."
```

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*Enhanced Error Recovery v1.0 - Intelligent resilience for SuperClaude operations*