test(memory-ingest): pin put_page regression + scrub stale name from --help and comments (#1346)

#1346 reported that gstack-memory-ingest still called the renamed
gbrain put_page subcommand on gbrain v0.18+. The actual code migrated
to `gbrain put` and later to batch `gbrain import <dir>` before this
report landed — only documentation lag remained.

This commit:
- Updates the --help string ("Skip gbrain put calls (still updates
  state file)") so user-facing docs match the shipped subcommand
- Updates two inline comments that still referenced the old name
- Adds test/memory-ingest-no-put_page.test.ts: a regression pin that
  strips comments from bin/gstack-memory-ingest.ts and fails the build
  if "put_page" appears in any active code or string literal, plus a
  sanity check that the file still calls a supported gbrain page-write
  verb (put or import)

Closes #1346. Reporter @kylma-code surfaced the doc lag; the original
code migration credit is on the v1.27.x wave.

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

bin/gstack-memory-ingest.ts

@@ -194,7 +194,7 @@ Options:
   --all-history        Walk transcripts older than 90 days too.
   --sources <list>     Comma-separated subset: ${ALL_TYPES.join(",")}
   --limit <N>          Stop after N pages written (smoke testing).
-  --no-write           Skip gbrain put_page calls (still updates state file).
+  --no-write           Skip gbrain put calls (still updates state file).
                        Used by tests + dry runs without actual ingest.
   --scan-secrets       Opt-in per-file gitleaks scan during prepare. Off by
                        default; gstack-brain-sync already gates the git-push
@@ -1061,7 +1061,7 @@ async function probeMode(args: CliArgs): Promise<ProbeReport> {
   }
 
   // Per ED2: ~25-35 min for ~11.7K transcripts = ~150ms/page synchronous
-  // (gitleaks + render + put_page + embedding). Scale linearly.
+  // (gitleaks + render + put + embedding). Scale linearly.
   const estimateMinutes = Math.max(1, Math.round((newCount + updatedCount) * 0.15 / 60));
 
   return {
@@ -1374,7 +1374,7 @@ async function ingestPass(args: CliArgs): Promise<BulkResult> {
   if (args.noWrite) {
     // --no-write: skip the gbrain import call but still record state for
     // prepared pages (treat them as ingested for dedup purposes). Matches
-    // the prior contract from --help: "Skip gbrain put_page calls (still
+    // the prior contract from --help: "Skip gbrain put calls (still
     // updates state file)".
     const nowIso = new Date().toISOString();
     for (const p of prep.prepared) {