v0.41.37.0 fix: critical fix wave — reindex tag wipe, grandfather hang, Windows migration spawn, sync ReDoS (#1621 #1581 #1605 #1569) (#1665)

* fix(reindex): add-only tag reconciliation + DB-only re-chunk preserves frontmatter (#1621)

reindex --markdown and re-import no longer wipe DB-side enrichment tags.
Tag reconciliation is now ADD-ONLY (import-file.ts): re-import adds current
frontmatter tags and never deletes, so auto/dream/signal-detector tags survive.
The reindex DB-only fallback reconstructs full markdown via serializeMarkdown
so re-chunking a page with no on-disk source preserves frontmatter/title/timeline.

* fix(migrations): v0.13.1 grandfather chunked, source-safe, soft-delete-filtered (#1581)

phaseCGrandfather rewritten from a per-page getPage+putPage loop (which hung
70+ min on an 82K-page PGLite brain) to a chunked bulk SQL pass keyed on
pages.id (NOT slug — slug isn't globally unique), filtering deleted_at IS NULL,
with a batched rollback log carrying source identity.

* fix(migrations): run schema phases in-process to fix Windows getaddrinfo ENOTFOUND (#1605)

The 9 'gbrain init --migrate-only' execSync spawns died on Windows+bun+Supabase
(child DNS resolution). runMigrateOnlyCore (extracted from initMigrateOnly) runs
the schema bring-up in-process for all engines, unblocking schema_version
advancement. Includes async-call-site audit, a wall-clock guard, and a
runGbrainSubprocess stderr-capture wrapper for the remaining backfill spawns.

* fix(sync): ReDoS hardening + diagnostics for schema-pack regexes (#1569)

Input-length cap in runRegexBounded + route the unbounded link-inference path
through it (closes the only no-timeout ReDoS hole); star-height lint rule warns
on nested-quantifier patterns; --no-schema-pack sync escape hatch; GBRAIN_SYNC_TRACE
per-file begin heartbeat; PGLite serve/sync concurrency doc. Defensive hardening +
diagnostics — the deterministic ~3100-file wedge root cause remains open (no repro).

* docs(todos): file v0.41.37.0 fix-wave follow-ups (#1621/#1605/#1569)

* chore: bump version and changelog (v0.41.37.0)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* docs: sync README + CLAUDE.md for v0.41.37.0 critical fix wave

Add reindex add-only tag reconciliation (#1621), v0.13.1 grandfather +
Windows in-process migration (#1581/#1605), and schema-pack ReDoS
hardening + sync --no-schema-pack / GBRAIN_SYNC_TRACE triage (#1569)
to CLAUDE.md key-files annotations and README Troubleshooting.
Regenerated llms-full.txt.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* fix(ci): bump llms-full.txt budget 700KB→750KB (CLAUDE.md crossed 700KB after master merge)

The build-llms size-budget test failed: llms-full.txt is 703,244 bytes after the
v0.41.37.0 key-files annotations merged on top of master's v0.41.34/35/36 CLAUDE.md
additions. Matches the v0.41.9.0 precedent (600→700); the single-fetch bundle still
fits comfortably in modern long-context models.

---------

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

scripts/llms-config.ts

@@ -255,9 +255,10 @@ export const INLINE_TIPS = [
   "`gbrain upgrade` runs post-upgrade + apply-migrations.",
 ];
 
-// Target ~700KB so llms-full.txt fits in ~175k-token contexts with room to spare.
-// Bumped from 600KB in v0.41.9.0 — CLAUDE.md grew past 600KB after the wave's
-// new-file annotations + Conductor branch-name iron-rule landed; the bundle
-// still fits comfortably in modern long-context models.
+// Target so llms-full.txt fits in ~190k-token contexts with room to spare.
+// Bumped 600KB→700KB in v0.41.9.0, then 700KB→750KB in v0.41.37.0 — CLAUDE.md
+// crossed 700KB once the critical-fix-wave key-files annotations merged on top
+// of master's v0.41.34/35/36 additions (703KB). Still fits comfortably in
+// modern long-context models.
 // Generator prints a WARN if exceeded; ship with includeInFull=false exclusions.
-export const FULL_SIZE_BUDGET = 700_000;
+export const FULL_SIZE_BUDGET = 750_000;