fix(trekresearch): gate Phase 4.5 on VOYAGE_STORM_ENABLED, not effort alone

CLAUDE.md claimed both STORM phases go inert when the flag is unset. Only
Phase 5 did: the flag check lives in research-loop-cap.mjs, and Phase 4.5
never invokes the cap — it was gated on effort: high alone. At high effort
with the flag unset, discovery still mined Phase-4 output and mutated the
dimension list, so `dimensions` diverged from `dimensions_baseline` and the
decline branch was unreachable for half the mechanism.

The code was the deviator, so the guard is fixed rather than the claim: the
Phase 4.5 skip-guard now names both conditions, with the reason inline.

Three surfaces scoped the flag to "the loop" and are corrected with it
(README, docs/command-modes, docs/architecture), plus the orchestrator phase
map. CLAUDE.md's claim is now true, but its stated MECHANISM was not — Phase
4.5's inertness comes from its own guard, not from the cap module — so that
sentence is corrected too.

New doc-consistency pin: the flag must be documented as gating both phases on
all four reference surfaces. Review finding 00a3af1a.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011vPSXe88qp5aqWUqbDNWoF

tests/lib/doc-consistency.test.mjs

@@ -1148,6 +1148,23 @@ test('STORM: VOYAGE_STORM_ENABLED is documented WITH its default-off contract',
   }
 });
 
+// The flag gates BOTH STORM phases, not just the Phase 5 loop. A surface that
+// scopes it to "the loop" tells an operator that unsetting it still leaves
+// Phase 4.5 discovery running — which was true until the guard was fixed, and
+// is the half-off state the decline branch cannot survive.
+test('STORM: VOYAGE_STORM_ENABLED is documented as gating BOTH phases, not the loop alone', () => {
+  for (const f of STORM_SURFACES) {
+    const t = read(f);
+    const i = t.indexOf('VOYAGE_STORM_ENABLED');
+    const window = t.slice(Math.max(0, i - 400), i + 400);
+    assert.match(
+      window,
+      /4\.5|discovery|dimension discovery|both/i,
+      `${f}: VOYAGE_STORM_ENABLED must be documented as gating Phase 4.5 too, not only the Phase 5 loop`,
+    );
+  }
+});
+
 test('STORM: README research-dimension prose stays at the existing 3–8 ceiling', () => {
   // Phase 4.5 discovers dimensions UNDER settings.json:16's maxDimensions: 8.
   // Rewriting this prose upward would raise a ceiling the brief asked us to hold.