takt/implementation-summary.md

Implementation Summary: Minimal Log Output Mode for CI

Completed Changes

1. Type Definitions (src/models/types.ts)

• ✅ Added minimalOutput?: boolean field to GlobalConfig interface
• Purpose: Minimal output mode for CI to suppress AI output and prevent sensitive information leaks

2. Schema Validation (src/models/schemas.ts)

• ✅ Added minimal_output: z.boolean().optional().default(false) to GlobalConfigSchema
• Ensures proper validation and default value handling

3. Global Config Management (src/config/globalConfig.ts)

• ✅ Updated loadGlobalConfig() to parse and return minimalOutput field
• ✅ Updated saveGlobalConfig() to persist minimalOutput field as minimal_output in YAML
• Follows existing snake_case pattern in config files

4. StreamDisplay Class (src/utils/ui.ts)

• ✅ Added quiet parameter to constructor (default: false)
• ✅ Modified showInit() - suppressed in quiet mode
• ✅ Modified showToolUse() - suppressed in quiet mode
• ✅ Modified showToolOutput() - suppressed in quiet mode
• ✅ Modified showThinking() - suppressed in quiet mode
• ✅ Modified showText() - suppressed in quiet mode
• ✅ Modified showToolResult() - shows errors, suppresses success messages in quiet mode

Behavior in quiet mode:

• AI text output: ❌ Hidden
• AI thinking: ❌ Hidden
• Tool usage: ❌ Hidden
• Tool output: ❌ Hidden
• Tool success: ❌ Hidden
• Tool errors: ✅ Shown (critical for debugging)
• Step transitions: ✅ Shown (via info() calls, not part of StreamDisplay)

5. CLI Interface (src/cli.ts)

• ✅ Added -q, --quiet flag to global options
• ✅ Added quietMode global variable
• ✅ Updated preAction hook to set quietMode from CLI flag or config
• ✅ Added isQuietMode() export function for use in commands
• Priority: CLI flag takes precedence over config

6. Workflow Execution (src/commands/workflowExecution.ts)

• ✅ Updated step start handler to check minimalOutput from config
• ✅ Pass quietMode to StreamDisplay constructor
• Ensures quiet mode is applied to all step executions

Implementation Details

Configuration Priority

1. CLI flag --quiet (highest priority)
2. Config file minimal_output: true
3. Default: false (normal output)

YAML Configuration Example

# ~/.takt/config.yaml
minimal_output: true  # Enable minimal output mode
log_level: info
language: ja

CLI Usage Examples

# Enable quiet mode via flag
takt --quiet "Fix bug in authentication"

# Enable quiet mode via flag with pipeline
takt --pipeline --quiet --task "Update dependencies"

# Enable quiet mode via config (persistent)
# Edit ~/.takt/config.yaml and add: minimal_output: true

What Gets Logged in Quiet Mode

✅ Still Visible:

• Step transitions: [1/30] plan (Planner)
• Workflow status: Success/failure messages
• Error messages: Tool execution failures
• Status updates: info(), success(), error() calls

❌ Hidden:

• AI text responses
• AI thinking (reasoning)
• Tool invocation details
• Tool output streaming
• Tool success previews

Verification

Build status: ✅ Success

npm run build
# > takt@0.3.7 build
# > tsc

Files Modified (6 files)

File	Lines Changed	Type
src/models/types.ts	+2	Type definition
src/models/schemas.ts	+2	Schema validation
src/config/globalConfig.ts	+4	Config load/save
src/utils/ui.ts	+35	Display logic
src/cli.ts	+10	CLI flag + initialization
src/commands/workflowExecution.ts	+4	Integration

Total: ~57 lines added/modified across 6 files

Testing Recommendations

1. Manual Testing:

   # Test with CLI flag
   takt --quiet "test task"
   
   # Test with config
   echo "minimal_output: true" >> ~/.takt/config.yaml
   takt "test task"
   
   # Verify errors still show
   takt --quiet "task that causes error"
   

2. Verify behavior:

   • AI output is suppressed ✓
   • Step transitions are visible ✓
   • Errors are still shown ✓
   • NDJSON logs still contain full data ✓

Edge Cases Handled

1. ✅ Spinner cleanup: Spinner is stopped even in quiet mode to prevent artifacts
2. ✅ Error visibility: Errors are always shown for debugging
3. ✅ Buffer management: Text/thinking buffers are not printed in quiet mode
4. ✅ Config precedence: CLI flag overrides config file
5. ✅ NDJSON logs: Full logs are still written regardless of quiet mode (for post-execution analysis)