docs: update path references for module-folder reorganization

Rewrite src/ and tests/ project paths in docs, CLAUDE.md, README.md, and
test-fixture READMEs to the new module-folder layout (Core/Server/Drivers/
Client/Tooling). References to retired v1 projects (Galaxy.Host/Proxy/Shared,
the legacy monolithic test projects) are left untouched.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

docs/drivers/FOCAS.md

@@ -19,7 +19,7 @@ protocol using the documented command IDs. Writes return
 
 | Project | Target | Role |
 |---------|--------|------|
-| `src/ZB.MOM.WW.OtOpcUa.Driver.FOCAS/` | net10.0 | In-process driver — hosts `WireFocasClient` which speaks FOCAS2 over TCP directly |
+| `src/Drivers/ZB.MOM.WW.OtOpcUa.Driver.FOCAS/` | net10.0 | In-process driver — hosts `WireFocasClient` which speaks FOCAS2 over TCP directly |
 
 Previous `Driver.FOCAS.Host` / `Driver.FOCAS.Shared` Tier-C split has been
 retired — the managed wire client removes the native-crash blast radius
@@ -205,10 +205,10 @@ latency spike once per cadence.
 
 ## Testing
 
-- **Unit tests** — `tests/ZB.MOM.WW.OtOpcUa.Driver.FOCAS.Tests/` cover the
+- **Unit tests** — `tests/Drivers/ZB.MOM.WW.OtOpcUa.Driver.FOCAS.Tests/` cover the
   driver surface via `FakeFocasClient`. Includes the alarm-projection raise /
   clear diffing tests.
-- **Integration tests** — `tests/ZB.MOM.WW.OtOpcUa.Driver.FOCAS.IntegrationTests/`
+- **Integration tests** — `tests/Drivers/ZB.MOM.WW.OtOpcUa.Driver.FOCAS.IntegrationTests/`
   hold the Docker simulator scaffold; see
   [`docs/v2/implementation/focas-wire-protocol.md`](../v2/implementation/focas-wire-protocol.md)
   for what the simulator emits vs. real CNC behaviour.