chore(meta): docs/build sweep + tooling test gate (T-1069, T-1066)

- make test-tooling: planet-gen determinism guard + import_economics
  --dry-run, wired into pre-push on TOOLING_CHANGED; ruff widened to
  E4/E7/E9/F/W (90 safe auto-fixes applied; E402/E702/F841 ignored with
  documented counts)
- one-generator reality fixed in DEVOPS.md, asset-pipeline rule, CLAUDE.md
  (import_economics sole generator since #951/D-223); dead check-protocol
  target deleted; DEVOPS hook/config sections rewritten from the actual
  hook sources; team-patterns gate description updated (client+tooling)
- project.yaml: 0.2.0 → 0.4.0 per the 0.{phase}.{n} scheme, description
  refreshed from the v0.1 Sova narration to cascade reality
- stale comment sweep: voxel.rs stub claims (all 8 families implemented),
  cascade.rs TODO recited to T-1044, main.rs D-192 handshake claim,
  relationships.rs/chunk_streaming.rs version targets → phase language
- gitignore: client/settings.db* e2e-run artifacts

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

pyproject.toml

@@ -24,8 +24,16 @@ line-length = 100
 target-version = "py311"
 
 [tool.ruff.lint]
-# E9xx: Runtime syntax/encoding errors
-# F401: Unused imports
-# F811: Redefinition of unused name
-# F821: Undefined name (catches missing imports like bare `os`)
-select = ["E9", "F401", "F811", "F821"]
+# Widened from {E9, F401, F811, F821} to the full ruff-default tiers + W (T-1066).
+#   E4: import placement/style
+#   E7: statement-level pitfalls (== None, bare except, lambda assignment, ...)
+#   E9: runtime syntax/encoding errors
+#   F:  all pyflakes (unused imports/names, undefined names, f-string misuse, ...)
+#   W:  whitespace + invalid escape sequences (zero violations at adoption)
+select = ["E4", "E7", "E9", "F", "W"]
+# Rules excluded at adoption because the existing violation count was not
+# trivially fixable (T-1066) — re-enable per-rule as the debt is paid down:
+#   E402 (43×): module-import-not-at-top — script-style sys.path.insert before import
+#   E702 (41×): semicolon-paired assignments, deliberate style in planet-gen noise math
+#   F841 (21×): unused locals, mostly in numeric/diagnostic code — needs manual review
+ignore = ["E402", "E702", "F841"]