feat: expand init-now cli and use Effect for scripting

[adelrodriguez]

Greptile Overview

Greptile Summary

Refactors the init-now CLI to use the Effect framework for functional error handling and composable operations, replacing the previous Yargs-based implementation. Adds five new CLI subcommands (setup, add, check, update, rename) that help users manage their monorepo projects with interactive prompts and template synchronization. Database scripts are modernized to use async/await patterns with improved error handling.

Confidence Score: 3/5

• Generally safe refactoring with good error handling, but contains a logic issue in update command that could cause incorrect file synchronization behavior
• The PR implements a well-structured migration to Effect framework with comprehensive error handling and user-friendly prompts. However, the update command contains a potential logic issue where hasLocalChanges check may not behave correctly for new files—running git diff on non-existent files could produce unexpected results. This could lead to files being skipped during template synchronization. The rest of the codebase follows good patterns with proper concurrency handling, typed errors, and Effect compositions.
• cli/src/commands/update.ts requires attention for the file diff logic issue

Important Files Changed

File Analysis

Filename	Score	Overview
cli/src/commands/update.ts	2/5	Implements template synchronization with git operations; potential logic issue with file existence check in hasLocalChanges
cli/src/commands/setup.ts	4/5	Adds project initialization with workspace selection and cleanup; well-structured with proper error handling
cli/src/index.ts	4/5	Refactored to use Effect CLI framework with subcommands; clean error handling and user-friendly prompts
cli/src/utils.ts	4/5	Adds utility functions for version checking, file operations, and project name replacement; well-tested patterns

Sequence Diagram

sequenceDiagram
    participant User
    participant CLI as init-now CLI
    participant Effect as Effect Runtime
    participant Git
    participant FS as File System
    participant GitHub as GitHub API

    User->>CLI: init-now update
    CLI->>Effect: Execute update command
    Effect->>GitHub: Check latest release version
    GitHub-->>Effect: Return latest version
    Effect->>FS: Read .template-version.json
    FS-->>Effect: Return current version
    Effect->>Git: Verify working tree clean
    Git-->>Effect: Confirm clean status
    Effect->>Git: Clone template repo
    Git-->>Effect: Template cloned
    Effect->>Git: Get local and template files
    Git-->>Effect: Return file lists
    Effect->>Git: Check diff for each file
    Git-->>Effect: Return files to update
    Effect->>FS: Copy updated files
    FS-->>Effect: Files copied
    Effect->>Git: Stage changes
    Git-->>Effect: Changes staged
    Effect->>FS: Update .template-version.json
    FS-->>Effect: Version updated
    Effect-->>CLI: Update complete
    CLI-->>User: Display success message

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✨ Finishing touches

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• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch effect-cli

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[adelrodriguez]

• refactor: expand uses of effect and remove unused utils #66
• feat: expand init-now cli and use Effect for scripting #65 👈 (View in Graphite)
• feat: streamline and clean up codebase #63
• feat: migrate to adamantite@0.23.0 #62
• main

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[adelrodriguez]

@greptileai review

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