diff --git a/get-shit-done/bin/lib/phase-command-router.cjs b/get-shit-done/bin/lib/phase-command-router.cjs
index 721e5761c..8715a9ce5 100644
--- a/get-shit-done/bin/lib/phase-command-router.cjs
+++ b/get-shit-done/bin/lib/phase-command-router.cjs
@@ -9,12 +9,9 @@ const { createHub, ERROR_KINDS, makeInvalidArgs } = require('./command-routing-h
  * Manifest-backed phase subcommand router.
  * Keeps gsd-tools.cjs thin while preserving existing command semantics.
  *
- * #175: Hub is CJS-only. The SDK bridge is still separately invokable via
- * bin/lib/cjs-sdk-bridge.cjs, but the Hub no longer routes to it.
- *
- * SDK-only (unsupported in CJS router — error returned before dispatch):
- * - list-plans: SDK-only.
- * - list-artifacts: SDK-only.
+ * Unsupported in this router (error returned before dispatch):
+ * - list-plans.
+ * - list-artifacts.
  * - scaffold: routed through top-level scaffold command.
  *
  * CJS-only subcommands: mvp-mode (dispatched directly, before hub).
@@ -23,11 +20,11 @@ const { createHub, ERROR_KINDS, makeInvalidArgs } = require('./command-routing-h
  * and observable CLI behaviour are unchanged.
  */
 function routePhaseCommand({ phase, args, cwd, raw, error }) {
-  // ── Unsupported / SDK-only subcommands ─────────────────────────────────────
+  // ── Unsupported subcommands ────────────────────────────────────────────────
   // Resolved before dispatch so the error message matches the pre-#3788 text.
   const UNSUPPORTED = {
-    'list-plans': 'phase list-plans is SDK-only. Use: gsd-sdk query phase.list-plans ...',
-    'list-artifacts': 'phase list-artifacts is SDK-only. Use: gsd-sdk query phase.list-artifacts ...',
+    'list-plans': 'phase list-plans is not supported in this router.',
+    'list-artifacts': 'phase list-artifacts is not supported in this router.',
     scaffold: 'phase scaffold is routed through the top-level scaffold command.',
   };
 
@@ -149,7 +146,7 @@ function routePhaseCommand({ phase, args, cwd, raw, error }) {
 
   // ── Build manifest (available subcommands for UnknownCommand detection) ─────
   // `availableSubcommands` is what the error message shows. It excludes
-  // SDK-only unsupported commands (already handled above) but does NOT include
+  // unsupported commands (already handled above) but does NOT include
   // 'mvp-mode' because it was absent from PHASE_SUBCOMMANDS in the original
   // and was not shown in the "Available:" list there either.
   //
diff --git a/get-shit-done/bin/lib/phases-command-router.cjs b/get-shit-done/bin/lib/phases-command-router.cjs
index 4b98b73b7..2e5e6f83f 100644
--- a/get-shit-done/bin/lib/phases-command-router.cjs
+++ b/get-shit-done/bin/lib/phases-command-router.cjs
@@ -7,25 +7,14 @@ const { routeCjsCommandFamily } = require('./cjs-command-router-adapter.cjs');
  * Manifest-backed phases subcommand router.
  * Keeps gsd-tools.cjs thin while preserving current CJS semantics.
  *
- * Phase 6: phases.list and phases.clear are dispatched via executeForCjs when
- * the SDK is available. CJS fallback retained when:
- * - GSD_WORKSTREAM is active (workstream-scoped requests fall through to CJS).
- * - SDK is unavailable (build not present).
- *
- * SDK-only (not in CJS router, treated as unknown):
- * - archive: `phases archive` is SDK-only (`phases.archive` handler in SDK
- *   query registry). CJS `gsd-tools phases` intentionally supports list/clear only.
- *   `archive` is excluded from the subcommands list so it falls through to the
- *   "unknown subcommand" error path (matching pre-Phase 6 behavior).
- *
- * CJS-only subcommands: none.
+ * Unsupported in this router (treated as unknown):
+ * - archive: `phases archive` is excluded from the subcommands list so it
+ *   falls through to the unknown-subcommand error path.
  */
 function routePhasesCommand({ phase, milestone, args, cwd, raw, error }) {
   routeCjsCommandFamily({
     args,
-    // Exclude 'archive' — it's SDK-only and not supported in CJS. Excluding
-    // from this list causes it to hit the unknownMessage path, preserving the
-    // pre-Phase 6 error message for callers that pass 'archive'.
+    // Exclude 'archive' so it hits the unknownMessage path.
     subcommands: PHASES_SUBCOMMANDS.filter((s) => s !== 'archive'),
     error,
     unknownMessage: (_subcommand, available) => `Unknown phases subcommand. Available: ${available.join(', ')}`,
diff --git a/get-shit-done/bin/lib/roadmap-command-router.cjs b/get-shit-done/bin/lib/roadmap-command-router.cjs
index 03b19bb1b..338b18b69 100644
--- a/get-shit-done/bin/lib/roadmap-command-router.cjs
+++ b/get-shit-done/bin/lib/roadmap-command-router.cjs
@@ -6,14 +6,6 @@ const { routeCjsCommandFamily } = require('./cjs-command-router-adapter.cjs');
 /**
  * Manifest-backed roadmap subcommand router.
  * Keeps gsd-tools.cjs thin while preserving existing command semantics.
- *
- * Phase 6: all roadmap.* subcommands have SDK equivalents and are dispatched
- * via executeForCjs (the sync bridge). CJS fallback retained when:
- * - GSD_WORKSTREAM is active (workstream-scoped requests fall through to CJS).
- * - SDK is unavailable (build not present).
- *
- * CJS-only subcommands: none.
- * SDK-only (unsupported in CJS router): none.
  */
 function routeRoadmapCommand({ roadmap, args, cwd, raw, error }) {
   routeCjsCommandFamily({
diff --git a/get-shit-done/bin/lib/verify-command-router.cjs b/get-shit-done/bin/lib/verify-command-router.cjs
index b9cb47515..54fc0a47f 100644
--- a/get-shit-done/bin/lib/verify-command-router.cjs
+++ b/get-shit-done/bin/lib/verify-command-router.cjs
@@ -6,14 +6,6 @@ const { routeCjsCommandFamily } = require('./cjs-command-router-adapter.cjs');
 /**
  * Manifest-backed verify subcommand router.
  * Keeps gsd-tools.cjs thin while preserving existing command semantics.
- *
- * Phase 6: all verify.* subcommands have SDK equivalents and are dispatched
- * via executeForCjs (the sync bridge). CJS fallback retained when:
- * - GSD_WORKSTREAM is active (workstream-scoped requests fall through to CJS).
- * - SDK is unavailable (build not present).
- *
- * CJS-only subcommands: none.
- * SDK-only (unsupported in CJS router): none.
  */
 function routeVerifyCommand({ verify, args, cwd, raw, error }) {
   routeCjsCommandFamily({
@@ -37,9 +29,7 @@ function routeVerifyCommand({ verify, args, cwd, raw, error }) {
       },
       // verify codebase-drift dispatches direct to CJS — drift is out-of-seam
       // per ADR/PRD 3524 §3 / L160 (CJS-only by design). Routing through
-      // sdkHandler would re-enter the SDK bridge, and Phase 6's removed
-      // verifyCodebaseDrift stub used to execFileSync back to the CLI,
-      // creating an infinite spawn loop.
+      // recursive dispatch would re-enter this router path.
       'codebase-drift': () => verify.cmdVerifyCodebaseDrift(cwd, raw),
     },
   });
diff --git a/tests/command-routing-hub.test.cjs b/tests/command-routing-hub.test.cjs
index 624b2c42d..18aa3ab42 100644
--- a/tests/command-routing-hub.test.cjs
+++ b/tests/command-routing-hub.test.cjs
@@ -292,7 +292,7 @@ describe('CommandRoutingHub — kind: HandlerRefusal', () => {
           'list-plans': (_ctx) => ({
             ok: false,
             kind: ERROR_KINDS.HandlerRefusal,
-            reason: 'phase list-plans is SDK-only',
+            reason: 'phase list-plans is not supported in this router.',
           }),
         },
       },
@@ -457,7 +457,7 @@ describe('CommandRoutingHub — P1.2 typed-payload discriminated union (#176)',
           'list-plans': (_ctx) => ({
             ok: false,
             kind: ERROR_KINDS.HandlerRefusal,
-            reason: 'phase list-plans is SDK-only',
+            reason: 'phase list-plans is not supported in this router.',
           }),
         },
       },
@@ -467,7 +467,7 @@ describe('CommandRoutingHub — P1.2 typed-payload discriminated union (#176)',
 
     assert.ok(!result.ok);
     assert.equal(result.kind, ERROR_KINDS.HandlerRefusal);
-    assert.ok(result.reason.includes('SDK-only'));
+    assert.ok(result.reason.includes('not supported'));
     // Strict field set
     const keys = Object.keys(result).sort();
     assert.deepStrictEqual(keys, ['kind', 'ok', 'reason']);
@@ -781,7 +781,7 @@ describe('CommandRoutingHub — Finding 3: factory returns are Object.frozen', (
   });
 
   test('makeHandlerRefusal returns a frozen object', () => {
-    const result = makeHandlerRefusal('SDK-only');
+    const result = makeHandlerRefusal('not supported');
     assert.ok(Object.isFrozen(result),
       'makeHandlerRefusal must return a frozen object');
   });
diff --git a/tests/phase-command-router.test.cjs b/tests/phase-command-router.test.cjs
index c7f9b060d..c6e9326e4 100644
--- a/tests/phase-command-router.test.cjs
+++ b/tests/phase-command-router.test.cjs
@@ -6,7 +6,7 @@
  * Shape:
  *   1. Adapter translation — CLI args → hub dispatch shape
  *   2. Result translation — hub result → stdout / error callback
- *   3. Unsupported subcommands — SDK-only commands produce the documented error
+ *   3. Unsupported subcommands — unsupported commands produce the documented error
  *   4. Unknown subcommand — unmapped subcommands produce a well-formed error
  *   5. Integration — real hub + real CJS phase handler invocation
  *
@@ -22,8 +22,7 @@ const assert = require('node:assert/strict');
 
 const { routePhaseCommand } = require('../get-shit-done/bin/lib/phase-command-router.cjs');
 
-// Force CJS path throughout: set GSD_WORKSTREAM so tryLoadSdk() is bypassed.
-// This makes unit-level assertions deterministic regardless of SDK build state.
+// Set GSD_WORKSTREAM for deterministic routing context in tests.
 let _prevWorkstream;
 before(() => {
   _prevWorkstream = process.env.GSD_WORKSTREAM;
@@ -282,10 +281,10 @@ describe('phase-command-router — result translation (error path)', () => {
   });
 });
 
-// ─── 3. Unsupported (SDK-only) subcommands ────────────────────────────────────
+// ─── 3. Unsupported subcommands ───────────────────────────────────────────────
 
-describe('phase-command-router — SDK-only subcommands', () => {
-  test('phase list-plans calls error() with SDK-only message', () => {
+describe('phase-command-router — unsupported subcommands', () => {
+  test('phase list-plans calls error() with unsupported message', () => {
     let msg = null;
     routePhaseCommand({
       phase: makePhase(),
@@ -296,11 +295,11 @@ describe('phase-command-router — SDK-only subcommands', () => {
     });
 
     assert.ok(msg !== null);
-    assert.ok(msg.includes('SDK-only'), `expected "SDK-only" in: ${msg}`);
+    assert.ok(msg.includes('not supported'), `expected unsupported text in: ${msg}`);
     assert.ok(msg.includes('list-plans'));
   });
 
-  test('phase list-artifacts calls error() with SDK-only message', () => {
+  test('phase list-artifacts calls error() with unsupported message', () => {
     let msg = null;
     routePhaseCommand({
       phase: makePhase(),
@@ -311,7 +310,7 @@ describe('phase-command-router — SDK-only subcommands', () => {
     });
 
     assert.ok(msg !== null);
-    assert.ok(msg.includes('SDK-only'));
+    assert.ok(msg.includes('not supported'));
     assert.ok(msg.includes('list-artifacts'));
   });
 
@@ -363,7 +362,7 @@ describe('phase-command-router — unknown subcommand', () => {
 
     assert.ok(msg.includes('add'), `expected add in available list: ${msg}`);
     assert.ok(msg.includes('complete'), `expected complete in available list: ${msg}`);
-    assert.ok(!msg.includes('list-plans'), `list-plans (SDK-only) must not appear in available list: ${msg}`);
+    assert.ok(!msg.includes('list-plans'), `list-plans (unsupported) must not appear in available list: ${msg}`);
   });
 });
 
diff --git a/tests/phases-command-router.test.cjs b/tests/phases-command-router.test.cjs
index 5164c304b..80ff5fc91 100644
--- a/tests/phases-command-router.test.cjs
+++ b/tests/phases-command-router.test.cjs
@@ -5,11 +5,7 @@ const assert = require('node:assert/strict');
 
 const { routePhasesCommand } = require('../get-shit-done/bin/lib/phases-command-router.cjs');
 
-// These tests exercise the CJS dispatch path of the router. Since #3577 the
-// router prefers the SDK bridge when sdk/dist is present, which would bypass
-// the mocked `phase`/`milestone` handlers below. The router gates SDK
-// dispatch on `process.env.GSD_WORKSTREAM` being unset, so set it for these
-// tests to deterministically take the CJS path that the mocks model.
+// These tests exercise router dispatch with a deterministic runtime context.
 let _prevWorkstream;
 before(() => {
   _prevWorkstream = process.env.GSD_WORKSTREAM;
diff --git a/tests/roadmap-command-router.test.cjs b/tests/roadmap-command-router.test.cjs
index 47e652e2b..3f09d146e 100644
--- a/tests/roadmap-command-router.test.cjs
+++ b/tests/roadmap-command-router.test.cjs
@@ -5,11 +5,7 @@ const assert = require('node:assert/strict');
 
 const { routeRoadmapCommand } = require('../get-shit-done/bin/lib/roadmap-command-router.cjs');
 
-// These tests exercise the CJS dispatch path of the router. Since #3577 the
-// router prefers the SDK bridge when sdk/dist is present, which would bypass
-// the mocked `roadmap` handlers below. The router gates SDK dispatch on
-// `process.env.GSD_WORKSTREAM` being unset, so set it here to deterministically
-// take the CJS path that the mocks model.
+// These tests exercise router dispatch with a deterministic runtime context.
 let _prevWorkstream;
 before(() => {
   _prevWorkstream = process.env.GSD_WORKSTREAM;