Plan - Implementation Planning

Scan ./plans/ first. If relevant unfinished plans exist, update them. If unclear, ask user.

Cross-Plan Dependency Detection

1. Scan plans/*/plan.md (status != completed/cancelled)
2. Detect overlapping files, shared deps, same feature area
3. Classify: new needs existing output -> blockedBy: [dir], new changes existing deps -> update both
4. Bidirectional: update BOTH plan.md files

Default (No Arguments)

Operation	Description
(default)	Create implementation plan (fast mode)
--full	Full flow: research + scope challenge + red team + validate
archive	Archive plans + log
red-team	Adversarial review
validate	Critical questions interview

If invoked without arguments, run fast mode trực tiếp (không AskUserQuestion).

Workflow Modes

Flag	Mode	Research	Red Team	Validation
default / --fast	Fast	Skip	Skip	Skip
--full	Full	1 researcher	Optional	Optional
--hard	Hard	2 researchers	Yes	Optional
--parallel	Parallel	2 researchers	Yes	Optional
--two	Two approaches	2+ researchers	After select	After select

Add --no-tasks to skip task hydration.

Process Flow (default fast)

1. Cross-Plan Scan -> Chỉ quét nếu có plan active (scan nhanh)
2. Scope Challenge -> Skip (fast)
3. Codebase Analysis -> Đọc docs, scan nếu cần (không spawn researcher)
4. Plan Documentation -> Write plan.md + phase-XX.md
5. Hydrate Tasks -> TaskCreate per phase (--no-tasks để skip)
6. Output -> Absolute path

Full Flow (--full)

1. Pre-Creation Check -> Check Plan Context
2. Cross-Plan Scan -> Detect blockedBy/blocks, update both
3. Scope Challenge -> Run 3 questions, select mode
4. Research -> Spawn 1 researcher
5. Codebase Analysis -> Read docs, scan if needed
6. Plan Documentation -> Write plan.md + phase-XX.md
7. Red Team -> /hi-plan red-team {path}
8. Validate -> /hi-plan validate {path}
9. Hydrate Tasks -> TaskCreate per phase
10. Output -> Absolute path + craft command

Output Requirements

• Plans in CURRENT WORKING PROJECT DIRECTORY (not user home)
• Plan files = persistent. Tasks = session-scoped
• Invoke /hi-project-organization after output
• Respect ./docs/development-rules.md

Task Management

• Auto-hydrate tasks after plan write (skip --no-tasks)
• <3 phases -> skip task creation (overhead > benefit)
• Task tools CLI-only (VSCode: use TodoWrite)

Subcommands

Subcommand	Purpose
/hi-plan archive	Archive plans + log
/hi-plan red-team {path}	Adversarial review
/hi-plan validate {path}	Critical questions interview