aif-improve

# Improve - Plan Refinement (Second Iteration) Refine an existing plan by re-analyzing it against the codebase. Finds gaps, missing tasks, wrong dependencies, and enhances task quality. ## Core Idea ``` existing plan + deeper codebase analysis + user feedback (optional) ↓ find gaps, missing edge cases, wrong assumptions ↓ enhanced plan with better tasks, correct dependencies, more detail ``` ## Workflow ### Step 0: Load Config & Find the Plan **FIRST:** Read `.ai-factory/config.yaml` if it exists to resolve: - **Paths:** `paths.plan`, `paths.plans`, `paths.fix_plan`, `paths.research`, `paths.description`, and `paths.patches` - **Language:** `language.ui` for prompts - **Git:** `git.enabled`, `git.base_branch`, `git.create_branches` - **Workflow:** `workflow.plan_id_format` (default: `slug`) — used by branch-based plan discovery. Active values: `slug` and `sequential`. When `sequential`, the resolver globs `<paths.plans>/[0-9]{4}_<branch-slug>.md` first and falls back to `<paths.plans>/<branch-slug>.md` only if no numbered match is found. `timestamp` and `uuid` are **reserved values** and currently behave like `slug`. Treat any unknown value as `slug`. If config.yaml doesn't exist, use defaults: - plan: `paths.plan` (default: `.ai-factory/PLAN.md`) - plans/: `.ai-factory/plans/` - fix plan: `paths.fix_plan` (default: `.ai-factory/FIX_PLAN.md`) - research: `.ai-factory/RESEARCH.md` - patches/: `.ai-factory/patches/` - DESCRIPTION.md: `.ai-factory/DESCRI...