feat(groove): add zig-groove-bridge replacing banned V-lang connector

Rewrites developer-ecosystem/v-ecosystem/connectors/v-groove-bridge/src/main.v
in Zig (0.15.2). V-lang is banned estate-wide since 2026-04-10; the V-lang
connector was the only way to discover and attach to Groove-aware services
from developer-ecosystem, making it a hard blocker for Groove protocol wiring.

The new library lives at zig-ecosystem/connectors/zig-groove-bridge/:
- src/main.zig — full Dodeca-API (12 surface types), service discovery
  (known ports + Groove dynamic range 6460–6500), snap-on/snap-off
  Attachment, attach/attachVerisimdb helpers. 12 unit tests pass.
- test/integration_test.zig — offline integration tests (lenient probe,
  discoverAll, ServiceNotFound guard). Module imported as "groove_bridge".
- build.zig — shared lib, static lib, unit + integration test steps.
- .gitignore — excludes .zig-cache/ and zig-out/.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: hyperpolymath

zig-ecosystem/connectors/zig-groove-bridge/.gitignore

@@ -0,0 +1,2 @@
+.zig-cache/
+zig-out/

zig-ecosystem/connectors/zig-groove-bridge/build.zig

@@ -0,0 +1,87 @@
+// SPDX-License-Identifier: PMPL-1.0-or-later
+// Copyright (c) 2026 Jonathan D.A. Jewell (hyperpolymath) <j.d.a.jewell@open.ac.uk>
+//
+// zig-groove-bridge — Zig replacement for the banned V-lang v-groove-bridge.
+//
+// Builds a shared library, a static library, and runs unit/integration tests.
+
+const std = @import("std");
+
+pub fn build(b: *std.Build) void {
+    const target = b.standardTargetOptions(.{});
+    const optimize = b.standardOptimizeOption(.{});
+
+    // ── Shared library (.so / .dylib / .dll) ─────────────────────────────────
+    const lib = b.addLibrary(.{
+        .name = "groove_bridge",
+        .linkage = .dynamic,
+        .root_module = b.createModule(.{
+            .root_source_file = b.path("src/main.zig"),
+            .target = target,
+            .optimize = optimize,
+        }),
+        .version = .{ .major = 0, .minor = 1, .patch = 0 },
+    });
+    b.installArtifact(lib);
+
+    // ── Static library (.a) ───────────────────────────────────────────────────
+    const lib_static = b.addLibrary(.{
+        .name = "groove_bridge",
+        .linkage = .static,
+        .root_module = b.createModule(.{
+            .root_source_file = b.path("src/main.zig"),
+            .target = target,
+            .optimize = optimize,
+        }),
+    });
+    b.installArtifact(lib_static);
+
+    // ── Shared source module (re-used across test targets) ────────────────────
+    const src_module = b.createModule(.{
+        .root_source_file = b.path("src/main.zig"),
+        .target = target,
+        .optimize = optimize,
+    });
+
+    // ── Unit tests ────────────────────────────────────────────────────────────
+    const unit_tests = b.addTest(.{
+        .root_module = b.createModule(.{
+            .root_source_file = b.path("src/main.zig"),
+            .target = target,
+            .optimize = optimize,
+        }),
+    });
+    const run_unit_tests = b.addRunArtifact(unit_tests);
+    const test_step = b.step("test", "Run unit tests");
+    test_step.dependOn(&run_unit_tests.step);
+
+    // ── Integration tests ─────────────────────────────────────────────────────
+    const integration_mod = b.createModule(.{
+        .root_source_file = b.path("test/integration_test.zig"),
+        .target = target,
+        .optimize = optimize,
+    });
+    integration_mod.addImport("groove_bridge", src_module);
+
+    const integration_tests = b.addTest(.{
+        .root_module = integration_mod,
+    });
+    const run_integration_tests = b.addRunArtifact(integration_tests);
+    const integration_step = b.step("test-integration", "Run integration tests (requires live services)");
+    integration_step.dependOn(&run_integration_tests.step);
+
+    // ── Docs ──────────────────────────────────────────────────────────────────
+    const docs = b.addTest(.{
+        .root_module = b.createModule(.{
+            .root_source_file = b.path("src/main.zig"),
+            .target = target,
+            .optimize = .Debug,
+        }),
+    });
+    const docs_step = b.step("docs", "Generate documentation");
+    docs_step.dependOn(&b.addInstallDirectory(.{
+        .source_dir = docs.getEmittedDocs(),
+        .install_dir = .prefix,
+        .install_subdir = "docs",
+    }).step);
+}