IF pr subcommand:
    → Read and execute `pr.md` (internally calls `pr-analyze.md`)
    → Exit

IF merge subcommand:
    → Read and execute `merge.md`
    → Exit

IF current branch is main branch (main/master):
    IF --direct:
        → Skip sync, directly execute analysis and commit
    ELSE:
        → Warning: "⚠️ Currently on main branch, it is recommended to switch to a development branch. To commit directly, use the --direct parameter."
        → Abort process

ELSE (development branch):
    1. Read and execute `sync.md`   — Environment sync
    2. Read and execute `analyze.md` — Change analysis
    3. Read and execute `commit.md`  — Execute commit
    4. IF --push:
        → Read and execute `push.md` — Push to remote

1. Read `_utils.md`      — Obtain main branch name
2. Read and execute `pr.md`    — PR main workflow
   ├─ Pre-checks (branch, gh CLI)
   ├─ Scope determination
   ├─ Read and execute `pr-analyze.md` — Change analysis and summary generation
   ├─ ⚠️ Check existing PR (must be executed before squash)
   │   ├─ If MERGED/CLOSED → Continue creating new PR
   │   └─ If OPEN → Ask user: Update existing PR / Create new branch + new PR / Abort
   ├─ Commit cleanup (unless --no-squash)
   ├─ Push
   └─ Create PR (draft by default, formal with --direct)

1. Read and execute `analyze.md` — Change analysis
2. Read and execute `commit.md`  — Execute commit
3. IF --push:
    → Read and execute `push.md` — Push to remote