test(#1972): consolidate 94 command/module regression tests into subject suites

Fold 94 issue-named command/module regression files into the canonical test file
that owns each subject-under-test, across 52 existing suites (state, config, frontmatter,
roadmap-parser, capability-registry, shell-command-projection-dispatch, plan-phase-drift-guard,
health-validation, runtime-converters, commands, etc.). Verbatim block-scoped describe
wrappers; 881 subtests conserved 1:1. No new test files.

Host-env pre-check (per B2): the only GSD_WORKSTREAM/GSD_PROJECT-touching destinations
(intel, planning-workspace) clear those vars hermetically, so folded CLI tests are safe.

Regenerates regression-name allowlist (222->162), ratchets file-count allowlist across
8 buckets (validate entry removed after dropping <=2), makes 34 relocated allow-test-rule
exemptions issue-ref-compliant (ADR-456; prunes 34 stale ids). Repoints CONTEXT.md +
ADR-0002/443/1235/3524 test-file references. lint:ci green.

Part of epic #1969. Closes #1972.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

tests/install-runtime-artifacts.test.cjs

@@ -4493,3 +4493,58 @@ describe('single-owner reference-identity guard (ADR-1508 / #1511 Phase 2)', ()
 });
   });
 }
+
+
+// ────────────────────────────────────────────────────────────────────────
+// Folded from tests/bug-190-bridge-collapse.test.cjs — consolidation epic #1969 (B3 #1972)
+// ────────────────────────────────────────────────────────────────────────
+{
+  const { describe: __foldDescribe } = require('node:test');
+  __foldDescribe("folded:bug-190-bridge-collapse (consolidation epic #1969 B3 #1972)", () => {
+'use strict';
+
+const { test } = require('node:test');
+const assert = require('node:assert/strict');
+const fs = require('node:fs');
+const path = require('node:path');
+
+const ROOT = path.join(__dirname, '..');
+
+function read(rel) {
+  return fs.readFileSync(path.join(ROOT, rel), 'utf8');
+}
+
+test('bridge collapse removes cjs-sdk-bridge and runtime-bridge-sync seam', () => {
+  const bridgePath = path.join(ROOT, 'gsd-core', 'bin', 'lib', 'cjs-sdk-bridge.cjs');
+  const sdkDir = path.join(ROOT, 'sdk');
+
+  assert.equal(fs.existsSync(bridgePath), false, 'cjs-sdk-bridge.cjs must be removed');
+  assert.equal(fs.existsSync(sdkDir), false, 'sdk directory must be removed');
+
+  const routers = [
+    'gsd-core/bin/lib/init-command-router.cjs',
+    'gsd-core/bin/lib/roadmap-command-router.cjs',
+    'gsd-core/bin/lib/state-command-router.cjs',
+    'gsd-core/bin/lib/validate-command-router.cjs',
+    'gsd-core/bin/lib/verify-command-router.cjs',
+    'gsd-core/bin/lib/phases-command-router.cjs',
+  ];
+
+  for (const rel of routers) {
+    const src = read(rel);
+    assert.equal(
+      src.includes('cjs-sdk-bridge.cjs'),
+      false,
+      `${rel} must not import cjs-sdk-bridge.cjs`,
+    );
+  }
+
+  const rootPkg = JSON.parse(read('package.json'));
+  assert.equal(
+    Object.prototype.hasOwnProperty.call(rootPkg.dependencies || {}, 'synckit'),
+    false,
+    'package.json must not include synckit',
+  );
+});
+  });
+}