@startuml error-resolution-plan
!theme plain
skinparam backgroundColor #FEFEFE
skinparam shadowing false

title **Compilation Error Resolution Strategy**\n<size:12>//128 Errors → 0 Errors Migration Path//</size>

|Analyzer|
start

:Count errors by category;
note right: Parse cargo build output
            Group by error type

if (API signature errors?) then (51 errors)
    |Dev|
    :Update function signatures;
    note right: **Error Pattern:**
                "no method/field X on type Y"
                
                **Fix Strategy:**
                1. Check v2 API in lib.rs
                2. Verify export in pub use
                3. Update imports
                4. Test with cargo check
    
    :Add missing trait bounds;
    note right: **Error Pattern:**
                "the trait bound T: Send is not satisfied"
                
                **Fix Strategy:**
                1. Add Send + Sync bounds
                2. Add 'static bounds if needed
                3. Update where clauses
    
    :Fix lifetime issues;
    note right: **Error Pattern:**
                "lifetime mismatch"
                "expected 'a, found 'b"
                
                **Fix Strategy:**
                1. Use HRTB: for<'a> T: Trait
                2. Add explicit lifetimes
                3. Use 'static for statics
else (no)
endif

if (Trait bound errors?) then (38 errors)
    |Dev|
    :Add async_trait bounds;
    note right: **Error Pattern:**
                "E0277: the trait bound 'T: 
                std::marker::Send' is not satisfied"
                
                **Fix Strategy:**
                1. Add #[async_trait]
                2. Add T: Send + Sync
                3. Add for<'a> bounds
    
    :Fix GAT constraints;
    note right: **Error Pattern:**
                "E0308: mismatched types in 
                associated type"
                
                **Fix Strategy:**
                1. Add explicit where clauses
                2. Use type_alias_impl_trait
                3. Test with HRTB
    
    :Update trait object bounds;
    note right: **Error Pattern:**
                "E0436: can't find field X in 
                the trait object"
                
                **Fix Strategy:**
                1. Check trait definition
                2. Verify dyn Trait usage
                3. Add required bounds
else (no)
endif

if (Import/Module errors?) then (25 errors)
    |Dev|
    :Fix use path errors;
    note right: **Error Pattern:**
                "E0432: unresolved import 
                'marketplace_v2::xyz'"
                
                **Fix Strategy:**
                1. Check lib.rs pub use
                2. Verify module exists
                3. Update path (module→struct)
    
    :Add missing re-exports;
    note right: **Error Pattern:**
                "E0516: item type E is 
                private"
                
                **Fix Strategy:**
                1. Make type pub in module
                2. Add to pub use in lib.rs
                3. Test visibility
    
    :Fix qualified paths;
    note right: **Error Pattern:**
                "E0433: cannot find 
                function in scope"
                
                **Fix Strategy:**
                1. Use crate:: prefix
                2. Use ggen_marketplace::
                3. Check feature flags
else (no)
endif

if (Dependency errors?) then (14 errors)
    |DevOps|
    :Update Cargo.toml versions;
    note right: **Error Pattern:**
                "E0433: cannot find 'feature' 
                in dependency"
                
                **Fix Strategy:**
                1. Check workspace Cargo.toml
                2. Verify feature enabled
                3. Update if necessary
    
    :Add missing features;
    note right: **Error Pattern:**
                "E1234: feature 'X' 
                required but not enabled"
                
                **Fix Strategy:**
                1. Enable in Cargo.toml
                2. Re-run build
                3. Verify feature cfg(feature)
else (no)
endif

|Validator|
:Run cargo build --release;
note right: Verify no more compilation errors

if (Build succeeds?) then (yes)
    :Run cargo test;
    note right: Target: All 107 tests PASS
    
    if (All tests pass?) then (yes)
        :Run cargo make lint;
        note right: Verify no clippy warnings
        
        if (No warnings?) then (yes)
            :Update documentation;
            :Mark migration COMPLETE;
            stop
        else (warnings remain)
            :Fix clippy warnings;
            :(back to cargo build)
        endif
    else (tests fail)
        |DebugDev|
        :Debug test failures;
        :Fix test issues;
        :(back to cargo test)
    endif
else (build fails)
    |DebugDev|
    :Analyze new errors;
    :(back to error categorization)
endif

legend right
    <b>Error Resolution Priority</b>
    |= Priority |= Category |= Count |= Impact |
    | P0 | API Changes | 51 | Blocks compilation |
    | P1 | Trait Bounds | 38 | Breaks types |
    | P2 | Imports | 25 | Module scope |
    | P3 | Dependencies | 14 | Feature flags |
endlegend

@enduml
