DevEx: phpc doctor --gates lists north-star2-verify steps (#1865 phase 2)

[PurHur]

Problem

#1857 ✅ extended phpc doctor --gates with North Star 1 presenter steps (make north-star1-verify). #1865 adds make north-star2-verify for self-host M0–M4, but doctor output will not mention it until this follow-up lands — contributors still grep README for bootstrap commands.

Goal

Extend lib/Doctor.php runGates() with a North Star 2 presenter section:

Step	Command	LLVM?
Inventory	php script/bootstrap-inventory.php --check	no
Wave gate	make bootstrap-wave-check	partial
M0 link	./script/bootstrap-selfhost-link.sh	yes
M2 spine	BOOTSTRAP_LIB_SPINE_SMOKE=1 make bootstrap-selfhost-lib-spine-smoke	yes
M2 VM smoke	BOOTSTRAP_LIB_SPINE_VM_SMOKE=1 make bootstrap-selfhost-lib-spine-vm-smoke	no
Presenter	make north-star2-verify	tail optional

Show spine count snapshot (584/588), whether BOOTSTRAP_M3_HELLOWORLD_STRICT is set, and LLVM probe (same as NS1).

Implementation hints

File	Change
lib/Doctor.php	printNorthStar2PresenterSection()
test/unit/PhpcDoctorTest.php or DoctorGatesTest.php	Assert north-star2-verify substring
docs/GETTING-STARTED.md	Cross-link #1865

Depends on #1865 landing script/north-star2-verify.sh first (or print “pending — see #1865” until then).

Acceptance criteria

./phpc doctor --gates | grep -i north-star2-verify
./script/ci-fast.sh --filter DoctorGates

Local/Docker only — not GitHub Actions (#394 ✅).

Dependencies

• DevEx: make north-star2-verify presenter gate (self-host M0–M4) #1865 — script + Makefile target
• DevEx: make north-star1-verify presenter gate before #1044 close #1845 / DevEx: phpc doctor --gates lists north-star1-verify presenter steps (#1845 phase 2) #1857 — NS1 pattern
• DevEx: phpc doctor --gates prints MiniWebApp ladder status #657 — doctor baseline

Links

• Epic Epic: Self-host critical path — compiler compiles itself (M3→M5) #1492
• ROADMAP 🗺️ ROADMAP: Self-host + web-capable PHP subset (living) #78 Phase 5 Self-host