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>

docs/DEVOPS.md

@@ -123,7 +123,7 @@ The server must be running before the client connects (subprocess launch will be
 make test               # Run all tests (test-server + test-client)
 make test-server        # Rust tests via tests/run-rust (cargo nextest, JSON summary)
 make test-client        # Godot tests via tests/run-godot (gdUnit4 headless, JSON summary)
-make test-tooling       # Tooling gate: planet-gen determinism guard + import_economics --dry-run (T-1066)
+make test-tooling       # Tooling gate: atlas planet determinism guard + import_economics --dry-run (T-1066)
 ```
 
 The IPC test layers (D-030) have dedicated targets: