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>

server/src/main.rs

@@ -124,7 +124,8 @@ fn main() {
     tracing::info!("Client connected, sending protocol handshake");
 
     // Protocol handshake: first framed message on the wire (#555).
-    // Client reads this and validates protocol_version before sending any input.
+    // Carries no version field (D-192 dropped the PROTOCOL_VERSION lockstep);
+    // the client reads it and replies with its StartupMessage.
     use settled_reach_server::bridge::SimBridge;
     bridge.send_handshake().unwrap_or_else(|e| {
         tracing::error!("Failed to send handshake: {}", e);