feat: exploration-tracer planning with better iteration workflow

[yemyat]

Description

Introduces exploration-tracer planning philosophy and improves the autonomous iteration workflow. The core idea: specs describe WHAT to build, but implementation plans need to describe WHAT TO CHANGE. By doing expensive exploration ONCE during planning, execution agents work from concrete checklists instead of burning context discovering change locations.

Key Changes

• Exploration-tracer planning: Plan mode now traces all usages with sub-agents and records potentialChangeLocations with file:line references
• Story points: Tasks now include LOC-based points (1, 2, 3, or 5) for better estimation
• Dependency tracking: Both specs and tasks can now specify dependsOn for ordered execution
• Fully autonomous plan mode: Agent auto-selects next pending spec without asking questions
• Improved build workflow: Reordered to log progress before commit, streamlined prompts

Type of Change

• feat: New feature
• fix: Bug fix
• chore: Maintenance/refactoring
• docs: Documentation only

Checklist

• I have tested my changes locally
• My code follows the project's coding style
• I have updated documentation if needed
• My commit messages follow Conventional Commits

Related Issues