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>

Makefile

@@ -1,6 +1,6 @@
 GODOT := $(shell command -v godot4 2>/dev/null || command -v godot 2>/dev/null)
 
-.PHONY: help setup build check-protocol client server game stop test lint lint-python setup-venv ci ci-client ci-server clean \
+.PHONY: help setup build client server game stop test test-tooling lint lint-python setup-venv ci ci-client ci-server clean \
        decisions-sync decisions-active decisions-validate \
        validate-content check-fact-ids setup-hooks install-hooks \
        audit deny atlas-verify economy-db regen-db check-systems-db \
@@ -30,6 +30,7 @@ help:
 	@echo "  make client         Run the Godot client (test mode)"
 	@echo "  make server         Run the Rust simulation server"
 	@echo "  make test               Run all tests"
+	@echo "  make test-tooling       Tooling test gate: sim determinism + economics dry-run"
 	@echo "  make test-ipc-fixtures  Layer 1: IPC serialization fixtures"
 	@echo "  make test-ipc-protocol  Layer 2: mock IPC protocol tests"
 	@echo "  make test-ipc-integration Layer 3: real subprocess round-trip"
@@ -39,7 +40,6 @@ help:
 	@echo "  make ci                 Run full CI pipeline locally"
 	@echo "  make ci-client          Run client CI checks"
 	@echo "  make ci-server          Run server CI checks"
-	@echo "  make check-protocol Verify server/client protocol versions match"
 	@echo "  make clean          Remove build artifacts and caches"
 	@echo ""
 	@echo "  make decisions-sync     Sync governance/*.md decision records into pql.db"
@@ -120,16 +120,7 @@ setup-venv:
 
 # --- Build ---
 
-check-protocol:
-	@SERVER_V=$$(grep 'pub const PROTOCOL_VERSION' server/src/bridge/types.rs | sed 's/.*= *//;s/[^0-9]//g'); \
-	CLIENT_V=$$(grep 'const PROTOCOL_VERSION' client/scripts/protocol/protocol.gd | sed 's/.*= *//;s/[^0-9]//g'); \
-	if [ "$$SERVER_V" != "$$CLIENT_V" ]; then \
-		echo "ERROR: Protocol version mismatch — server=$$SERVER_V, client=$$CLIENT_V"; \
-		echo "  Fix: update client/scripts/protocol/protocol.gd to match server/src/bridge/types.rs"; \
-		exit 1; \
-	fi
-
-build: check-protocol build-server build-client
+build: build-server build-client
 
 build-server:
 	cd server && cargo build
@@ -227,6 +218,36 @@ test-ipc-integration:
 test-ipc-benchmark:
 	tests/run-ipc-benchmark
 
+# Python with tooling deps (numpy/scipy) — .venv from `make setup-venv`, else system python3
+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
+#      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=$$?; \
+	if [ $$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 $$rc; \
+	fi
+	@echo "  [test-tooling] import_economics --dry-run (committed DB)..."
+	@mkdir -p .cache
+	@rc=0; python3 tooling/economy-db/import_economics.py --dry-run \
+		> .cache/test-tooling-dryrun.log 2>&1 || rc=$$?; \
+	if [ $$rc -eq 2 ]; then \
+		echo "  WARNING: coverage gate warning (exit 2) — not blocking (matches regen-db)"; \
+	elif [ $$rc -ne 0 ]; then \
+		echo "  FAIL: import_economics --dry-run exited $$rc — log follows:"; \
+		cat .cache/test-tooling-dryrun.log; exit $$rc; \
+	fi
+	@echo "  test-tooling: PASS"
+
 # --- Clean ---
 
 clean-imports: