# Story 1.2: Module Structure Setup
Status: done
## Story
As a developer,
I want the project organized into logical modules,
so that code is maintainable and follows architecture design.
## Acceptance Criteria
1. **AC1:** The following directories and mod.rs files exist:
```
src/
├── main.rs
├── lib.rs
├── cli.rs
├── error.rs
├── db.rs
├── setup/mod.rs
├── query/mod.rs
├── llm/mod.rs
├── tui/mod.rs
└── exec/mod.rs
```
2. **AC2:** Each mod.rs properly declares submodules (empty stubs for now)
3. **AC3:** lib.rs re-exports public API for testing
4. **AC4:** main.rs imports from lib and sets up basic structure
5. **AC5:** `cargo build` succeeds without errors
6. **AC6:** `cargo clippy -- -D warnings` passes
## Tasks / Subtasks
- [x] Task 1: Create top-level modules (AC: 1, 5)
- [x] Create src/lib.rs with module declarations
- [x] Create src/cli.rs with placeholder struct
- [x] Create src/error.rs with placeholder
- [x] Create src/db.rs with placeholder
- [x] Task 2: Create directory modules (AC: 1, 2)
- [x] Create src/setup/mod.rs with submodule stubs
- [x] Create src/query/mod.rs with submodule stubs
- [x] Create src/llm/mod.rs with submodule stubs
- [x] Create src/tui/mod.rs with submodule stubs
- [x] Create src/exec/mod.rs with submodule stubs
- [x] Task 3: Configure lib.rs exports (AC: 3)
- [x] Re-export all modules as pub
- [x] Export anyhow::Result type alias
- [x] Task 4: Update main.rs (AC: 4)
- [x] Import from ulm crate
- [x] Set up basic entry point structure
- [x] Task 5: Verify build (AC: 5, 6)
- [x] Run `cargo build`
- [x] Run `cargo clippy -- -D warnings`
- [x] Fix any documentation or lint issues
## Dev Notes
### Architecture Patterns
From architecture.md Project Structure section:
**Module Responsibilities:**
| main.rs | Entry point, CLI dispatch, runtime setup |
| lib.rs | Public API re-exports for testing |
| cli.rs | Clap argument definitions |
| error.rs | Custom error types (if needed) |
| db.rs | LanceDB operations |
| setup/mod.rs | Setup orchestration |
| query/mod.rs | Query orchestration |
| llm/mod.rs | LLM orchestration |
| tui/mod.rs | TUI orchestration |
| exec/mod.rs | Command execution |
**Code Organization Rules:**
- One struct per file when > 100 lines
- Related functions grouped in impl blocks
- Tests at bottom of file in `#[cfg(test)]` module
### Submodule Structure (for future stories)
```
setup/
├── mod.rs
├── ollama.rs # Story 2.1-2.3
└── index.rs # Story 2.4-2.7
query/
├── mod.rs
├── search.rs # Story 3.1-3.2
└── context.rs # Story 3.3-3.4
llm/
├── mod.rs
├── ollama.rs # Story 2.1
├── prompt.rs # Story 3.5
└── response.rs # Story 3.6
tui/
├── mod.rs
├── render.rs # Story 4.1
└── input.rs # Story 4.2
exec/
├── mod.rs
├── shell.rs # Story 4.3
└── clipboard.rs # Story 4.4
```
### Testing Standards
- All modules should compile with placeholder implementations
- Use `pub(crate)` for internal APIs
- Strict linting: no `unwrap()` or `expect()`
### Learnings from Previous Story
**From Story 1-1-project-initialization (Status: done)**
- **Dependencies Ready**: All 13 dependencies configured and building
- **Linting Configured**: Strict rules in place including `missing_docs = "warn"`
- **Technical Note**: `unused_crate_dependencies = "allow"` - dependencies won't error until used
- **Version Note**: Using LanceDB 0.22 (not 0.4.x from original spec)
[Source: docs/sprint-artifacts/1-1-project-initialization.md#Dev-Agent-Record]
### References
- [Source: docs/architecture.md#Project-Structure]
- [Source: docs/sprint-artifacts/tech-spec-epic-1.md#Services-and-Modules]
- [Source: docs/sprint-artifacts/tech-spec-epic-1.md#Data-Models-and-Contracts]
- [Source: docs/epics.md#Story-1.2]
## Dev Agent Record
### Context Reference
### Agent Model Used
Claude Sonnet 4.5
### Debug Log References
### Completion Notes List
- Created 10 module files matching architecture specification
- All modules have placeholder structs with documentation
- lib.rs re-exports `anyhow::Result` and all public modules
- main.rs returns `Result<()>` with allow attribute for unnecessary_wraps (will be used in Story 1.4)
- Fixed doc_markdown lint for `LanceDB` (requires backticks)
- All builds and clippy checks pass
### File List
- src/lib.rs (NEW)
- src/cli.rs (NEW)
- src/error.rs (NEW)
- src/db.rs (NEW)
- src/setup/mod.rs (NEW)
- src/query/mod.rs (NEW)
- src/llm/mod.rs (NEW)
- src/tui/mod.rs (NEW)
- src/exec/mod.rs (NEW)
- src/main.rs (MODIFIED)
## Senior Developer Review (AI)
### Reviewer
Elmar Röser
### Date
2025-11-21
### Outcome
**APPROVE** - All acceptance criteria implemented, all tasks verified complete.
### Summary
Story 1.2 Module Structure Setup is fully complete. All 6 acceptance criteria are satisfied. The project now has the complete module structure per architecture specification.
### Key Findings
**No HIGH, MEDIUM, or LOW severity issues.**
### Acceptance Criteria Coverage
| AC1 | Module structure exists | ✅ | 10 files created |
| AC2 | mod.rs declares submodules | ✅ | Commented stubs ready |
| AC3 | lib.rs re-exports | ✅ | src/lib.rs:3 |
| AC4 | main.rs imports lib | ✅ | src/main.rs:7 |
| AC5 | cargo build succeeds | ✅ | Verified |
| AC6 | cargo clippy passes | ✅ | Verified |
**Summary: 6 of 6 acceptance criteria fully implemented**
### Task Completion Validation
| Task 1-5 | ✅ | ✅ | All verified |
**Summary: 5 of 5 tasks verified, 0 false completions**
### Test Coverage and Gaps
No tests required for Story 1.2 per tech spec (module structure only).
### Architectural Alignment
✅ All architecture constraints satisfied per architecture.md
### Security Notes
✅ No issues
### Action Items
**Advisory Notes:**
- Note: Submodule files (ollama.rs, index.rs, etc.) will be created in later stories
## Change Log
| 2025-11-21 | 1.0 | Initial implementation complete |
| 2025-11-21 | 1.0 | Senior Developer Review - APPROVED |