fix(hal): widen the GTQ F56 note-length window to match USD/HNL

Every quetzal note is 156 x 67 mm — physically the same note as USD and
HNL, which the F56 table accepts at 146–166 (±10). GTQ was configured
at ±5 (151–161), with Q5 and Q20 further centred on 158 rather than 156.
This table was carried byte for byte from lamassu-machine, narrow window
included.

On a Tejo in GTQ it produced F56 error 82 00 (bill length, long) on
every Q100 pick — 5/5 notes rejected, 0 dispensed, a false "out of
cash" — byte-identical across transactions days apart, so the BDU was
reading >161 mm consistently. The reject tray held single notes, not
pairs, which rules out the offset double-pick the narrow window exists
to catch.

Every denomination now uses 0xa6 0x92 (146–166), identical to USD/HNL.
Mirrors lamassu-machine b1cc3622 (2026-09-29), ported with permission as
prior art.

Verification: tsc clean. packages/hal has no test files (vitest exits 1,
"No test files found") — recorded as ADR-005 review finding 10.

packages/hal/src/dispensers/f56/bills.ts

@@ -77,13 +77,20 @@ export const bills: Record<string, BillConfig> = {
   },
   GTQ: {
     thickness: 0x0c,
+    // Every quetzal note is 156 x 67 mm — physically the same as USD and
+    // HNL, which accept 146–166 (±10). This table inherited lamassu's ±5
+    // window (151–161) with Q5/Q20 centred on 158, and a Tejo in GTQ rejected
+    // 5/5 notes on every Q100 dispense with F56 error 82 00 (bill length,
+    // long): the BDU read >161 mm on every pick, and the reject tray held
+    // single notes, not pairs — so it was the window, not a double-pick.
+    // Widened to match USD/HNL, mirroring lamassu-machine b1cc3622.
     lengths: {
-      5: [0xa3, 0x99],
+      5: [0xa6, 0x92],
-      10: [0xa1, 0x97],
+      10: [0xa6, 0x92],
-      20: [0xa3, 0x99],
+      20: [0xa6, 0x92],
-      50: [0xa1, 0x97],
+      50: [0xa6, 0x92],
-      100: [0xa1, 0x97],
+      100: [0xa6, 0x92],
-      200: [0xa1, 0x97],
+      200: [0xa6, 0x92],
     },
     polymer: false,
   },