redaction: \b after magnitude so amounts don't eat the next word (v0.1.0:57)

The currency-anchored amount regexes treated a single-letter magnitude
suffix (k/m/b) as optional but unbounded, so "$5,000,000 but" scrubbed to
"[AMOUNT_1]ut" — the 'b' of "but" was consumed as a 'billion' suffix. Add a
word boundary after _MAG on the three currency-anchored _AMOUNT_RES patterns
(range, symbol, ISO-code); the worded-amount pattern is unaffected. Money
still tokenizes in every case ($5m/$5b/$3-5M/USD 5,000,000); only the OUTBOUND
to-Claude text stops losing the leading letter of the following word.
Round-trips were already lossless.

Regression-locked by a round-5 section in test_scrub_leak.py; full redaction
suite (scrub_leak + reidentification + grounding_boundary) green. Packaged as
StartOS v0.1.0:57. Reported by the Spark gateway dev; gateway re-vendored
scrub.py verbatim for parity (same golden-file leak test gates both sides).

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

start9/0.4/startos/utils.ts

@@ -21,8 +21,9 @@ export const PACKAGE_TITLE = 'Ten31 Database'
 //   * 0.1.0:53 (seed v5 thesis into the Architect Workshop)
 //   * 0.1.0:54 (unification polish: LinkedIn in grid inline contact editor)
 //   * 0.1.0:55 (Architect grounding boundary: redaction/re-hydration privacy gate)
-//   * Current:        0.1.0:56 (Thesis Workshop redesign: edit/choose/delete + approve-as-current)
-export const PACKAGE_VERSION = '0.1.0:56'
+//   * 0.1.0:56 (Thesis Workshop redesign: edit/choose/delete + approve-as-current)
+//   * Current:        0.1.0:57 (redaction fix: magnitude regex no longer eats the word after an amount)
+export const PACKAGE_VERSION = '0.1.0:57'
 
 export const DATA_MOUNT_PATH = '/data'
 export const WEB_PORT = 8080