refactor(tooling): T-1288 — planet-gen becomes reach atlas planet

The 30-file tree moves under atlas as its third rung (D-243), ten verbs
fronting it. Each verb restates its module's options so `--help` describes
something; tooling/test_planet_router.py hands every declared option to the
module's own argparse and fails on drift, and now runs in make test-tooling.

The 2026-09-02 half of this move had converted the top-level imports and the
repo roots. Finishing it found what the half-move left:

- Lazy in-function imports, and all of sol_data/, still named siblings bare.
  They resolved only through sys.path.insert hacks, so under reach the first
  globe render in generate, batch or sol-import would have raised
  ModuleNotFoundError. Qualified; the hacks are gone.
- 247 print() calls and a stdout progress writer that fired once per 8 KB
  block. Report verbs (audit, quality) write through console.out, progress
  through console.event, and download progress is throttled to 10% steps
  so a job log is not tens of thousands of lines.
- Every error exit raises ReachError with a fix.

Two checks that could not fail:

- batch --verify-determinism printed a warning and exited 0 on a mismatch.
- import-provinces exited 0 with errors > 0.

Both now raise. The 271-body bake is only safe to re-run because the first
one holds.

sol-import --body is action="append" in the module but the router took one
value, so --body GJ0d --body GJ0e kept one. Now repeatable, and _flags repeats
list options.

test_conformance walked one level, so a nested group was reported as a verb
missing @command and its ten verbs were never checked. It recurses now;
proven by stripping @command from `planet quality` and watching it fail.

Stray PNGs from the 2026-09-03 runaway router-test run are parked in
.cache/t1288-stray-pngs/, not committed. Their reliefmaps differ from HEAD
while the heightmap regenerated byte-identical — filed as T-1291.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Makefile

@@ -277,23 +277,26 @@ test-ipc-benchmark:
 VENV_PY := $(shell test -x .venv/bin/python && echo .venv/bin/python || echo python3)
 
 # Tooling test gate (T-1066) — called by pre-push when tooling/ changed.
-#   1. planet-gen determinism guard (#963): simulating the same body twice must
+#   1. atlas planet determinism guard (#963): simulating the same body twice must
 #      be bit-identical (guards the expensive 271-body heightmap bake).
 #      Exit 2 = no testable body found — warn, don't block.
 #   2. import_economics --dry-run against the committed DB: full parse +
 #      structural/coverage validation, no writes.  Exit 2 = coverage-gate
 #      warning (D-175) — tolerated, matching regen-db's treatment.
 test-tooling:
-	@echo "  [test-tooling] planet-gen determinism guard (#963)..."
-	@rc=0; $(VENV_PY) tooling/planet-gen/test_sim_determinism.py || rc=$$?; \
+	@echo "  [test-tooling] atlas planet determinism guard (#963)..."
+	@rc=0; $(VENV_PY) tooling/test_planet_determinism.py || rc=$$?; \
 	if [ $$rc -eq 2 ]; then \
 		echo "  WARNING: determinism guard found no testable body (exit 2) — not blocking"; \
 	elif [ $$rc -ne 0 ]; then \
 		echo "  FAIL: planet_simulation determinism drift (exit $$rc)"; exit $$rc; \
 	fi
 	@echo "  [test-tooling] oasis ring-scaling pin (T-964, PR #210 review)..."
-	@$(VENV_PY) tooling/planet-gen/test_oasis_ring_scaling.py 2> .cache/test-tooling-oasis-ring.log || \
+	@$(VENV_PY) tooling/test_planet_oasis_rings.py 2> .cache/test-tooling-oasis-ring.log || \
 		{ echo "  FAIL: oasis ring scaling — log follows:"; cat .cache/test-tooling-oasis-ring.log; exit 1; }
+	@echo "  [test-tooling] reach atlas planet options vs module parsers (T-1288)..."
+	@$(VENV_PY) tooling/test_planet_router.py 2> .cache/test-tooling-planet-router.log || \
+		{ echo "  FAIL: planet router drift — log follows:"; cat .cache/test-tooling-planet-router.log; exit 1; }
 	@echo "  [test-tooling] canvas-generation version gate units (T-1242)..."
 	@mkdir -p .cache
 	@python3 tooling/test_canvas_version_check.py 2> .cache/test-tooling-canvas-version.log || \