
 ▐▛███▜▌   Claude Code v2.0.1
▝▜█████▛▘  Sonnet 4.5 · Claude API
  ▘▘ ▝▝    /workspaces/cmdai
═══════════════════ Conversation compacted · ctrl+o for history ═══════════════════

● I'll continue with the next phase of Feature 003 by running the /plan command
   to create the implementation plan for the core infrastructure modules.

> /plan is running… 

● I'll execute the implementation plan workflow for Feature 003. Let me start
  by running the setup script to get the configuration.

● Bash(.specify/scripts/bash/setup-plan.sh --json)
  ⎿ Copied plan template to /workspaces/cmdai/specs/003-implement-core-infrast
    ructure/plan.md
    {
    … +9 lines (ctrl+o to expand)


● Now let me check if the feature spec has clarifications or if I should
  proceed:

● Read(specs/003-implement-core-infrastructure/spec.md)
  ⎿  Read 245 lines (ctrl+o to expand)

● The spec has made decisions on key unclear aspects (lines 18-20: XDG/platform
   conventions, TOML format, structured JSON logging) and the execution flow
  shows ambiguities were resolved. The spec is comprehensive with detailed
  requirements and no [NEEDS CLARIFICATION] markers. I'll proceed with the
  implementation plan.

  Let me read the constitution and plan template:

● Read(.specify/memory/constitution.md)
  ⎿  Read 172 lines (ctrl+o to expand)

● Read(specs/003-implement-core-infrastructure/plan.md)
  ⎿  Read 220 lines (ctrl+o to expand)

● Now I'll execute the implementation plan workflow. Let me start by filling in
   the plan template following the execution flow:

● Update(specs/003-implement-core-infrastructure/plan.md)
  ⎿  Updated specs/003-implement-core-infrastructure/plan.md with 3 additions 
     and 3 removals
       1    
       2 -  # Implementation Plan: [FEATURE]
       2 +  # Implementation Plan: Core Infrastructure Modules
       3    
       4 -  **Branch**: `[###-feature-name]` | **Date**: [DATE] | **Spec**: 
         - [link]
       5 -  **Input**: Feature specification from `/specs/[###-feature-name]
         -  /spec.md`
       4 +  **Branch**: `003-implement-core-infrastructure` | **Date**: 
         + 2025-10-02 | **Spec**: [spec.md](./spec.md)
       5 +  **Input**: Feature specification from `/workspaces/cmdai/specs/
         +  003-implement-core-infrastructure/spec.md`
       6    
       7    ## Execution Flow (/plan command scope)
       8    ```

● Update(specs/003-implement-core-infrastructure/plan.md)
  ⎿  Updated specs/003-implement-core-infrastructure/plan.md with 10 additions
     and 10 removals
       31    - Phase 3-4: Implementation execution (manual or via tools)
       32    
       33    ## Summary
       34 -  [Extract from feature spec: primary requirement + technical 
          - approach from research]
       34 +  Implement four core infrastructure modules for cmdai: (1) 
          + Hugging Face model caching with offline support and directory 
          + management, (2) configuration management with CLI integration 
          + and user preferences, (3) execution context with environment 
          + capture and shell detection, and (4) structured logging with 
          + tracing integration for observability. These modules provide the
          +  foundational infrastructure for all other cmdai components.
       35    
       36    ## Technical Context
       37 -  **Language/Version**: [e.g., Python 3.11, Swift 5.9, Rust 1.75 
          - or NEEDS CLARIFICATION]  
       38 -  **Primary Dependencies**: [e.g., FastAPI, UIKit, LLVM or NEEDS 
          - CLARIFICATION]  
       39 -  **Storage**: [if applicable, e.g., PostgreSQL, CoreData, files 
          - or N/A]  
       40 -  **Testing**: [e.g., pytest, XCTest, cargo test or NEEDS 
          - CLARIFICATION]  
       41 -  **Target Platform**: [e.g., Linux server, iOS 15+, WASM or 
          - NEEDS CLARIFICATION]
       42 -  **Project Type**: [single/web/mobile - determines source 
          - structure]  
       43 -  **Performance Goals**: [domain-specific, e.g., 1000 req/s, 10k 
          - lines/sec, 60 fps or NEEDS CLARIFICATION]  
       44 -  **Constraints**: [domain-specific, e.g., <200ms p95, <100MB 
          - memory, offline-capable or NEEDS CLARIFICATION]  
       45 -  **Scale/Scope**: [domain-specific, e.g., 10k users, 1M LOC, 50 
          - screens or NEEDS CLARIFICATION]
       37 +  **Language/Version**: Rust 1.75+ (2021 edition)
       38 +  **Primary Dependencies**: serde/serde_json (serialization), 
          + tokio (async runtime), directories (XDG paths), toml (config 
          + parsing), tracing/tracing-subscriber (logging)
       39 +  **Storage**: File-based (cache manifest, TOML config files, 
          + JSON logs)
       40 +  **Testing**: cargo test with tokio-test for async, proptest for
          +  property-based validation
       41 +  **Target Platform**: macOS, Linux (primary), Windows 
          + (secondary)
       42 +  **Project Type**: Single project (library-first architecture 
          + via lib.rs exports)
       43 +  **Performance Goals**: Cache <5s for <1GB models, config load 
          + <100ms, context capture <50ms, non-blocking async logging
       44 +  **Constraints**: XDG-compliant paths, offline-capable, graceful
          +  degradation on failures, zero unsafe Rust
       45 +  **Scale/Scope**: 4 infrastructure modules, ~1000 LOC total, 
          + foundational for all cmdai features
       46    
       47    ## Constitution Check
       48    *GATE: Must pass before Phase 0 research. Re-check after Phase 
            1 design.*

● Now let me fill in the Constitution Check section based on the constitution
  principles:

● Update(specs/003-implement-core-infrastructure/plan.md)
  ⎿  Updated specs/003-implement-core-infrastructure/plan.md with 31 additions
     and 1 removal
       47    ## Constitution Check
       48    *GATE: Must pass before Phase 0 research. Re-check after Phase 
            1 design.*
       49    
       50 -  [Gates determined based on constitution file]
       50 +  ### I. Simplicity ✅ PASS
       51 +  - **Single project structure**: All 4 modules within existing 
          + `src/` hierarchy
       52 +  - **No wrapper abstractions**: Using dependencies directly 
          + (serde, tokio, directories, toml, tracing)
       53 +  - **Single data flow**: Configuration → Context → Execution → 
          + Logging (linear pipeline)
       54 +  - **No organizational-only patterns**: No repositories, DTOs, 
          + or UoW—just functional modules
       55    
       56 +  ### II. Library-First Architecture ✅ PASS
       57 +  - **All modules exported via lib.rs**: `cmdai::cache`, 
          + `cmdai::config`, `cmdai::execution`, `cmdai::logging`
       58 +  - **Self-contained libraries**: Each module has clear public 
          + API and single responsibility
       59 +  - **Binary orchestration**: `main.rs` uses libraries, contains 
          + no business logic
       60 +  - **Reusability**: Modules can be used programmatically beyond 
          + CLI
       61 +  
       62 +  ### III. Test-First (NON-NEGOTIABLE) ✅ PASS
       63 +  - **TDD methodology enforced**: Contract tests → Integration 
          + tests → Implementation
       64 +  - **Strict ordering**: Tests written and verified failing 
          + before any implementation
       65 +  - **Real dependencies**: Using actual filesystems (with 
          + tempdir), real async runtime
       66 +  - **Integration tests required**: Cross-module communication 
          + (config + context, cache + logging)
       67 +  
       68 +  ### IV. Safety-First Development ✅ PASS
       69 +  - **No unsafe Rust**: All infrastructure modules use safe Rust
       70 +  - **Path validation**: XDG directory resolution with permission
          +  checking
       71 +  - **Error handling**: All file operations return Results with 
          + user-friendly messages
       72 +  - **Graceful degradation**: Modules continue with defaults on 
          + failures (NFR-009)
       73 +  
       74 +  ### V. Observability & Versioning ✅ PASS
       75 +  - **Structured logging with tracing**: Logging module uses 
          + tracing crate throughout
       76 +  - **Error context chains**: Using anyhow for binary context, 
          + thiserror for library errors
       77 +  - **Performance instrumentation**: Timing logs for cache 
          + operations, config loading, context capture
       78 +  - **User-facing messages**: Clear error messages distinct from 
          + debug logs
       79 +  
       80 +  **Initial Assessment**: ✅ **CONSTITUTIONAL COMPLIANCE 
          + VERIFIED** - No violations detected
       81 +  
       82    ## Project Structure
       83    
       84    ### Documentation (this feature)

● Now let me update the Project Structure section and then execute Phase 0
  research:

● Update(specs/003-implement-core-infrastructure/plan.md)
  ⎿  Updated specs/003-implement-core-infrastructure/plan.md with 26 additions
     and 38 removals
        93    ```
        94    
        95    ### Source Code (repository root)
        96 -  <!--
        97 -    ACTION REQUIRED: Replace the placeholder tree below with the
           -  concrete layout
        98 -    for this feature. Delete unused options and expand the 
           - chosen structure with
        99 -    real paths (e.g., apps/admin, packages/something). The 
           - delivered plan must
       100 -    not include Option labels.
       101 -  -->
        96    ```
        97 -  # [REMOVE IF UNUSED] Option 1: Single project (DEFAULT)
        97    src/
        98 -  ├── models/
        99 -  ├── services/
       100 -  ├── cli/
       101 -  └── lib/
        98 +  ├── lib.rs                  # Library exports (add cache, 
           + config, execution, logging)
        99 +  ├── models/                 # Existing - data types (extend 
           + with infrastructure models)
       100 +  ├── cache/                  # NEW - Model caching with HF 
           + integration
       101 +  │   ├── mod.rs             # CacheManager, model download, 
           + integrity validation
       102 +  │   └── manifest.rs        # Cache manifest management
       103 +  ├── config/                 # NEW - Configuration management
       104 +  │   ├── mod.rs             # ConfigManager, TOML parsing, 
           + validation
       105 +  │   └── schema.rs          # Configuration schema definitions
       106 +  ├── execution/              # NEW - Execution context capture
       107 +  │   ├── mod.rs             # ExecutionContext, environment 
           + detection
       108 +  │   └── shell.rs           # Shell type detection logic
       109 +  ├── logging/                # NEW - Structured logging
       110 +  │   ├── mod.rs             # Logger initialization, tracing 
           + setup
       111 +  │   └── redaction.rs       # Sensitive data redaction logic
       112 +  ├── safety/                 # Existing - command validation
       113 +  ├── backends/               # Existing - LLM backends
       114 +  └── cli/                    # Existing - CLI orchestration 
           + (will use new modules)
       115    
       116    tests/
       117 -  ├── contract/
       118 -  ├── integration/
       119 -  └── unit/
       120 -  
       121 -  # [REMOVE IF UNUSED] Option 2: Web application (when 
           - "frontend" + "backend" detected)
       122 -  backend/
       123 -  ├── src/
       124 -  │   ├── models/
       125 -  │   ├── services/
       126 -  │   └── api/
       127 -  └── tests/
       128 -  
       129 -  frontend/
       130 -  ├── src/
       131 -  │   ├── components/
       132 -  │   ├── pages/
       133 -  │   └── services/
       134 -  └── tests/
       135 -  
       136 -  # [REMOVE IF UNUSED] Option 3: Mobile + API (when 
           - "iOS/Android" detected)
       137 -  api/
       138 -  └── [same as backend above]
       139 -  
       140 -  ios/ or android/
       141 -  └── [platform-specific structure: feature modules, UI flows, 
           - platform tests]
       117 +  ├── contract/               # Contract tests for module APIs
       118 +  │   ├── cache_contract.rs  # NEW - Cache module public API 
           + tests
       119 +  │   ├── config_contract.rs # NEW - Config module public API 
           + tests
       120 +  │   ├── execution_contract.rs # NEW - Execution module public 
           + API tests
       121 +  │   └── logging_contract.rs # NEW - Logging module public API 
           + tests
       122 +  ├── integration/            # Cross-module integration tests
       123 +  │   └── infrastructure_integration.rs # NEW - Config + Context
           +  + Cache + Logging
       124 +  └── unit/                   # Edge case testing 
           + (property-based where applicable)
       125    ```
       126    
       127 -  **Structure Decision**: [Document the selected structure and 
           - reference the real
       128 -  directories captured above]
       127 +  **Structure Decision**: Single project structure maintained. 
           + All four infrastructure modules added to existing `src/` 
           + hierarchy with corresponding contract tests. Library-first 
           + architecture enforced through `lib.rs` exports. Each module 
           + self-contained with clear public API.
       128    
       129    ## Phase 0: Outline & Research
       130    1. **Extract unknowns from Technical Context** above:

● Now let me execute Phase 0 research. Since there are no NEEDS CLARIFICATION
  markers in the Technical Context (all fields are filled with concrete
  decisions), I'll create research.md documenting the technology decisions
  made:

● Write(specs/003-implement-core-infrastructure/research.md)
  ⎿  Wrote 317 lines to specs/003-implement-core-infrastructure/research.md
     # Research: Core Infrastructure Modules
     **Feature**: 003-implement-core-infrastructure
     **Date**: 2025-10-02
     **Status**: Complete
     ## Research Questions & Decisions
     ### 1. Cache Directory Management
     … +307 lines (ctrl+o to expand)

> c 

● I'll continue with Phase 1: Design & Contracts. Let me create the data model
  document first:

● Write(specs/003-implement-core-infrastructure/data-model.md)
  ⎿  Wrote 398 lines to specs/003-implement-core-infrastructure/data-model.md 
     # Data Model: Core Infrastructure Modules
     **Feature**: 003-implement-core-infrastructure
     **Date**: 2025-10-02
     ## Entity Definitions
     ### 1. CachedModel
     **Purpose**: Represents a locally stored model with metadata for integrity
      validation
     … +388 lines (ctrl+o to expand)

● Now let me create the contracts directory and generate API contracts for each
   module:

● Bash(mkdir -p
      /workspaces/cmdai/specs/003-implement-core-infrastructure/contracts)
  ⎿  (No content)

● Write(specs/003-implement-core-infrastructure/contracts/cache-api.md)
  ⎿  Wrote 266 lines to                                                       
     specs/003-implement-core-infrastructure/contracts/cache-api.md
     # Cache Module API Contract
     **Module**: `cmdai::cache`
     **Purpose**: Model caching with Hugging Face integration and offline
     support
     ## Public API
     ### CacheManager
     ```rust
     … +256 lines (ctrl+o to expand)

● Write(specs/003-implement-core-infrastructure/contracts/config-api.md)
  ⎿  Wrote 321 lines to                                                  
     specs/003-implement-core-infrastructure/contracts/config-api.md
     # Config Module API Contract
     **Module**: `cmdai::config`
     **Purpose**: Configuration management with CLI integration and user
     preferences
     ## Public API
     ### ConfigManager
     ```rust
     … +311 lines (ctrl+o to expand)

● Write(specs/003-implement-core-infrastructure/contracts/execution-api.md)
  ⎿  Wrote 316 lines to                                                       
     specs/003-implement-core-infrastructure/contracts/execution-api.md
     # Execution Module API Contract
     **Module**: `cmdai::execution`
     **Purpose**: Execution context with environment capture and shell
     detection
     ## Public API
     ### ExecutionContext
     ```rust
     … +306 lines (ctrl+o to expand)

● Write(specs/003-implement-core-infrastructure/contracts/logging-api.md)
  ⎿  Wrote 441 lines to                                                       
     specs/003-implement-core-infrastructure/contracts/logging-api.md
     # Logging Module API Contract
     **Module**: `cmdai::logging`
     **Purpose**: Structured logging with tracing integration for observability
     ## Public API
     ### Logger
     ```rust

     … +431 lines (ctrl+o to expand)

● Now let me create the quickstart.md document with integration test scenarios:

● Write(specs/003-implement-core-infrastructure/quickstart.md)
  ⎿  Wrote 462 lines to specs/003-implement-core-infrastructure/quickstart.md 
     # Quickstart: Core Infrastructure Modules
     **Feature**: 003-implement-core-infrastructure
     **Purpose**: Integration test scenarios validating cross-module
     functionality
     ## Test Scenarios
     ### Scenario 1: First-Time User Experience
     **Objective**: Validate complete infrastructure initialization flow for
     new user
     … +452 lines (ctrl+o to expand)

● Now let me update the agent context file (CLAUDE.md) by running the update
  script:

● Bash(.specify/scripts/bash/update-agent-context.sh claude)
  ⎿ INFO: === Updating agent context files for feature 003-implement-core-infr
    astructure ===
    INFO: Parsing plan data from /workspaces/cmdai/specs/003-implement-core-in
    … +25 lines (ctrl+o to expand)



● Now let me complete Phase 2 by describing the task generation approach in the
   plan:

● Update(specs/003-implement-core-infrastructure/plan.md)
  ⎿  Updated specs/003-implement-core-infrastructure/plan.md with 82 additions
     and 10 removals
       184    *This section describes what the /tasks command will do - DO 
             NOT execute during /plan*
       185    
       186    **Task Generation Strategy**:
       187 -  - Load `.specify/templates/tasks-template.md` as base
       188 -  - Generate tasks from Phase 1 design docs (contracts, data 
           - model, quickstart)
       189 -  - Each contract → contract test task [P]
       190 -  - Each entity → model creation task [P] 
       191 -  - Each user story → integration test task
       192 -  - Implementation tasks to make tests pass
       187 +  1. Load `.specify/templates/tasks-template.md` as base
           +   template
       188 +  2. Generate tasks from Phase 1 artifacts:
       189 +     - **From contracts/**: 4 contract test files → 4 contract 
           + test tasks [P]
       190 +     - **From data-model.md**: 6 entities + 4 enums → 10 model 
           + definition tasks
       191 +     - **From quickstart.md**: 9 scenarios → 9 integration test 
           + tasks
       192 +     - **Implementation tasks**: 4 modules × 2 files each = 8 
           + implementation tasks
       193 +     - **Cross-module tasks**: Exports, documentation, 
           + validation
       194    
       195 +  **Detailed Task Breakdown**:
       196 +  
       197 +  ### TDD RED Phase (Contract Tests) - Tasks 1-4 [P]
       198 +  - T001: Write cache module contract tests (cache_contract.rs)
       199 +  - T002: Write config module contract tests 
           + (config_contract.rs)
       200 +  - T003: Write execution module contract tests 
           + (execution_contract.rs)
       201 +  - T004: Write logging module contract tests 
           + (logging_contract.rs)
       202 +  All tests must FAIL initially (no implementation yet)
       203 +  
       204 +  ### Model Definitions - Tasks 5-14 [Some P]
       205 +  - T005: Define CachedModel struct with validation 
           + (models/mod.rs)
       206 +  - T006: Define CacheManifest struct with operations 
           + (models/mod.rs)
       207 +  - T007: Define UserConfiguration struct with builder 
           + (models/mod.rs)
       208 +  - T008: Define ConfigSchema struct with validators 
           + (models/mod.rs)
       209 +  - T009: Define ExecutionContext struct with capture 
           + (models/mod.rs)
       210 +  - T010: Define LogEntry struct with serialization 
           + (models/mod.rs)
       211 +  - T011: Extend ShellType enum with detection (models/mod.rs)
       212 +  - T012: Define Platform enum with detection (models/mod.rs)
       213 +  - T013: Define LogLevel enum with conversions (models/mod.rs)
       214 +  - T014: Update lib.rs exports for infrastructure models
       215 +  
       216 +  ### TDD GREEN Phase (Implementation) - Tasks 15-22
       217 +  - T015: Implement cache module (cache/mod.rs, 
           + cache/manifest.rs)
       218 +  - T016: Implement config module (config/mod.rs, 
           + config/schema.rs)
       219 +  - T017: Implement execution module (execution/mod.rs, 
           + execution/shell.rs)
       220 +  - T018: Implement logging module (logging/mod.rs, 
           + logging/redaction.rs)
       221 +  - T019: Update lib.rs exports for all infrastructure modules
       222 +  - T020: Add new dependencies to Cargo.toml (directories, toml,
           +  tracing, etc.)
       223 +  - T021: Verify all contract tests pass (cargo test --test 
           + cache_contract, etc.)
       224 +  - T022: Run cargo fmt and cargo clippy
       225 +  
       226 +  ### Integration Tests - Tasks 23-31
       227 +  - T023: Write Scenario 1 test: First-time user experience
       228 +  - T024: Write Scenario 2 test: Returning user with cache
       229 +  - T025: Write Scenario 3 test: CLI argument override
       230 +  - T026: Write Scenario 4 test: Context-aware generation
       231 +  - T027: Write Scenario 5 test: Structured logging operations
       232 +  - T028: Write Scenario 6 test: Cache size limit & LRU
       233 +  - T029: Write Scenario 7 test: Sensitive data redaction
       234 +  - T030: Write Scenario 8 test: Config validation errors
       235 +  - T031: Write Scenario 9 test: Full cross-module integration
       236 +  
       237 +  ### Validation & Documentation - Tasks 32-35
       238 +  - T032: Run full test suite (cargo test)
       239 +  - T033: Verify performance requirements (cargo test -- 
           + --nocapture, check timings)
       240 +  - T034: Update CHANGELOG.md with Feature 003 additions
       241 +  - T035: Create PR for Feature 003
       242 +  
       243    **Ordering Strategy**:
       244 -  - TDD order: Tests before implementation 
       245 -  - Dependency order: Models before services before UI
       246 -  - Mark [P] for parallel execution (independent files)
       244 +  1. **Parallel Phase 1** (T001-T004): Contract tests can be 
           + written simultaneously
       245 +  2. **Sequential Phase 2** (T005-T014): Models have some 
           + dependencies (enums before structs)
       246 +  3. **Parallel Phase 3** (T015-T018): Each module 
           + implementation is independent
       247 +  4. **Sequential Phase 4** (T019-T022): Exports and 
           + verification must be sequential
       248 +  5. **Parallel Phase 5** (T023-T031): Integration tests can run
           +  in parallel
       249 +  6. **Sequential Phase 6** (T032-T035): Final validation and 
           + documentation
       250    
       251 -  **Estimated Output**: 25-30 numbered, ordered tasks in 
           - tasks.md
       251 +  **Dependency Graph**:
       252 +  ```
       253 +  T001-T004 (contract tests) [P]
       254 +      ↓
       255 +  T005-T014 (models) [Some P: enums first, then structs]
       256 +      ↓
       257 +  T015-T018 (implementations) [P]
       258 +      ↓
       259 +  T019-T022 (integration & verification) [Sequential]
       260 +      ↓
       261 +  T023-T031 (integration tests) [P]
       262 +      ↓
       263 +  T032-T035 (validation & docs) [Sequential]
       264 +  ```
       265    
       266 +  **Estimated Output**: 35 numbered, dependency-ordered tasks in
           +  tasks.md
       267 +  
       268 +  **Performance Validation Strategy**:
       269 +  - Each task includes acceptance criteria with performance 
           + targets
       270 +  - Integration tests measure and assert performance 
           + requirements
       271 +  - Tasks 32-33 specifically validate NFR-001 through NFR-010
       272 +  
       273    **IMPORTANT**: This phase is executed by the /tasks command, 
             NOT by /plan
       274    
       275    ## Phase 3+: Future Implementation

● Now let me update the Progress Tracking section to mark completed phases:

● Update(specs/003-implement-core-infrastructure/plan.md)
  ⎿  Updated specs/003-implement-core-infrastructure/plan.md with 7 additions 
     and 7 removals
       292    *This checklist is updated during execution flow*
       293    
       294    **Phase Status**:
       295 -  - [ ] Phase 0: Research complete (/plan command)
       296 -  - [ ] Phase 1: Design complete (/plan command)
       297 -  - [ 
           -  ] Phase 2: Task planning complete (/plan command - describe 
           -  approach only)
       295 +  - [x] Phase 0: Research complete (/plan command)
       296 +  - [x] Phase 1: Design complete (/plan command)
       297 +  - [x
           +  ] Phase 2: Task planning complete (/plan command - describe 
           +  approach only)
       298    - [ ] Phase 3: Tasks generated (/tasks command)
       299    - [ ] Phase 4: Implementation complete
       300    - [ ] Phase 5: Validation passed
       301    
       302    **Gate Status**:
       303 -  - [ ] Initial Constitution Check: PASS
       304 -  - [ ] Post-Design Constitution Check: PASS
       305 -  - [ ] All NEEDS CLARIFICATION resolved
       306 -  - [ ] Complexity deviations documented
       303 +  - [x] Initial Constitution Check: PASS
       304 +  - [x] Post-Design Constitution Check: PASS
       305 +  - [x] All NEEDS CLARIFICATION resolved
       306 +  - [x] Complexity deviations documented (None - no violations)
       307    
       308    ---
       309    *Based on Constitution v1.0.0 - See 
             `.specify/memory/constitution.md`*

● Perfect! The /plan command execution is complete. Let me provide a summary of
   the completed work:

  Implementation Plan Complete ✅

  Branch: 003-implement-core-infrastructure

  Artifacts Generated

  Phase 0 - Research (research.md):
  - 8 research decisions documented (cache directories, config format, async
  runtime, logging, HF downloads, shell detection, validation, error handling)
  - Technology stack summary with 7 dependencies
  - Performance considerations for all 4 modules
  - Security considerations (integrity, redaction, validation)

  Phase 1 - Design & Contracts:

  1. Data Model (data-model.md):
    - 6 entity definitions with validation rules
    - 4 enum types with conversions
    - Data flow diagrams for each module
    - File format specifications
    - Memory estimates (<1MB total)
  2. API Contracts (4 files in contracts/):
    - specs/003-implement-core-infrastructure/contracts/cache-api.md - 11
  behavioral contracts, performance requirements
    - specs/003-implement-core-infrastructure/contracts/config-api.md - 13
  behavioral contracts, TOML format spec
    - specs/003-implement-core-infrastructure/contracts/execution-api.md - 14
  behavioral contracts, shell detection
    - specs/003-implement-core-infrastructure/contracts/logging-api.md - 15
  behavioral contracts, redaction patterns
  3. Integration Tests (quickstart.md):
    - 9 end-to-end test scenarios
    - Performance targets for each scenario
    - Sample test data and expected outputs
  4. Agent Context (CLAUDE.md):
    - Updated with infrastructure module context
    - Added dependencies and technology choices

  Phase 2 - Task Planning Approach:
  - 35 tasks across 6 phases (RED → Models → GREEN → Integration → Validation)
  - Dependency graph with parallel execution opportunities
  - Performance validation strategy

  Constitutional Compliance ✅

  All 5 principles verified:
  - ✅ Simplicity: No wrapper abstractions, single data flow
  - ✅ Library-First: All modules via lib.rs exports
  - ✅ Test-First: TDD RED-GREEN workflow enforced
  - ✅ Safety-First: No unsafe Rust, graceful degradation
  - ✅ Observability: Structured logging with tracing

  Next Steps

  Run /tasks command to generate the detailed task breakdown in tasks.md, then
  /implement to execute the implementation.




