chore(tooling): T-1272 + T-1274 — close E3: no hyphens left, and the lint ignores come off

T-1272 (a verification, as rescoped). No directory Python imports carries a
hyphen any more. The hyphenated script trees were emptied by the per-domain
moves, not renamed. What still has a hyphen is never imported: the three Rust
crates, and the provenance under tooling/archive/, which has no __init__.py.
CLAUDE.md and DEVOPS still pointed at tooling/db/, and pyproject still
predicted the rename; all three fixed.

T-1274. E402, E702 and F841 were ignored for the whole tree from T-1066 on
(43 / 41 / 21 violations). All three are back on:

- E402: the planet modules' imports only sat below their path constants
  because they used to follow a sys.path insert, gone since T-1288. Hoisted.
  The Blender payloads keep a per-file exception, because they extend
  sys.path under Blender's own Python.
- E702: the paired component assignments in three planet maths files are
  deliberate, so they get a per-file exception scoped to those files.
- F841: 10 dead locals removed from live code, each checked for side effects
  first; logo_uv keeps its call, which creates the UV layer.
- tooling/archive/ is excluded: it is provenance, and "fixing" a one-shot
  falsifies the record of what actually ran.

Evidence the lint is real: violations fed through stdin fire in a domain
module, and E402 stays quiet only on a payload path. Evidence nothing moved:
globe renders are pixel-identical before and after for an oceanic, a frozen
and a gas-giant body, and the ledger edit was regenerated (stamp fresh,
generated_brands.toml unchanged).

One finding, noted in the code rather than fixed: planet_renderer computed an
oblate-spheroid ray scale and never used it, so `oblateness` shapes no globe.
Wiring it in would change every globe render; that is a decision to make
deliberately, not a lint fix.

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

tooling/scripts/blender/blender_author_offset_shell.py

@@ -715,7 +715,7 @@ def author_logo_uv(shell, thr):
     # Keep exactly two UV layers: primary (albedo/mask) + logo. Remove extras.
     while len(me.uv_layers) > 1:
         me.uv_layers.remove(me.uv_layers[-1])
-    logo_uv = me.uv_layers.new(name="logo_uv")
+    me.uv_layers.new(name="logo_uv")  # created for its side effect: the logo UV layer
     me.uv_layers.active = me.uv_layers[0]  # keep albedo layer active for mask bake safety
 
     bm = bmesh.new()