feat(deficit): backup-aware filament deficit check, colour-strict (#1762)

When the printer reports ams_filament_backup=True,
  compute_deficit_for_queue_item pools remaining_grams across spools
  matching (preset, colour) on the same printer (scoped per extruder on
  dual-nozzle) before declaring a per-slot shortfall. Identity is strict:
  same slicer_filament preset AND same colour (alpha-normalised). Two
  PETG HF spools in different colours are NOT pooled — the firmware would
  swap correctly but the print would change colour mid-run. Spoolman side
  mirrors the rule via filament.id + color_hex. Backup OFF falls back to
  the pre-PR per-slot accounting line-for-line.

  8 new test cases in TestFilamentDeficitBackupAware pin pool covers,
  pool insufficient, different presets, backup-OFF regression, dual-
  extruder side scoping, no-preset never pairs, colour-strict, and
  alpha-hex normalisation. The 8 pre-existing test_filament_deficit.py
  cases stay green.

  feat(printers): AMS Filament Backup modal with BS-style ring per pair

  Badge click on the Filaments section header (#1766) now opens a
  modal: filament-colour ring per backup pair, material name + rotation
  count in the centre, slot labels distributed around the colour band on
  contrast-aware pills. Closely modelled on Bambu Studio's Auto Refill
  widget. Lone slots are intentionally not listed. R / L badges per ring
  when the extruder map carries two distinct values; collapses to no-
  badge rendering for single-nozzle printers misflagged as dual.

  Esc keypress closes the modal. Theme-aware via CSS variables matching
  AMSHistoryModal. computeBackupGroups helper in utils/amsHelpers
  defensively dedupes duplicate ams.id entries observed on switch-VP
  aggregations.

  10 modal render cases pin: Esc closes / unmount nulls the listener /
  ring renders for pairs and omits lone slots / R-L badges only when
  extruder map has distinct values / empty state / toggle gating.
  13 frontend cases pin computeBackupGroups identity rules.

  feat(printers): active-print P-N pill on AMS slot tiles during RUNNING

  While the printer is mid-print, each AMS slot tile referenced by
  status.ams_mapping carries a small "P1 / P2 / P3" pill in the top-
  right corner, naming which print-slot is mapped to that AMS slot.
  Catches the #1762 comment-2 scenario: a queue job set for "any X1C"
  staged to a printer with mismatched filament, no way to verify mid-
  print. Same wire data (status.ams_mapping is already on the wire) —
  the addition is purely surface.

  The existing ring-bambu-green highlight for effectiveTrayNow keeps its
  meaning (currently extruding RIGHT NOW); the pill is the per-slot
  static assignment for the active print.

  chore(scheduler): log Print Anyway short-circuit at INFO

  _block_on_filament_deficit logs at INFO when it honours
  item.skip_filament_check, so a future "Print Anyway didn't work" report
  (third commenter on #1762 hit this shape) has actionable evidence in
  the standard support bundle without DEBUG. Bundled because the deficit
  fix makes the original symptom disappear for users with backup ON.

frontend/scripts/check-i18n-parity.mjs

@@ -143,6 +143,8 @@ const DE_COGNATES = [
   'Name', 'Status', 'Tag', 'Tags', 'Online', 'Offline', 'Standard', 'Modus',
   'Stop', 'Reset', 'Test', 'Code', 'Token', 'Server', 'Port', 'Bug', 'Job',
   'Bambu Cloud', 'Orca Cloud',  // brand names — same in every locale
+  'AMS Filament Backup',  // Bambu Lab product/firmware feature name
+
   'Pause', 'Power', 'System', 'Problem', 'Designer', 'Extruder', 'Firmware',
   'Material', 'Original', 'Position', 'Webhook', 'Workflow', 'Slicer',
   'Region', 'Normal', 'Orange', 'Branch', 'Budget', 'Commit', 'Global',
@@ -171,6 +173,7 @@ const DE_COGNATES = [
 // French cognates — many UI labels overlap with English exactly.
 const FR_COGNATES = [
   'Bambu Cloud', 'Orca Cloud',  // brand names — same in every locale
+  'AMS Filament Backup',  // Bambu Lab product/firmware feature name
   'Status', 'Tag', 'Tags', 'Online', 'Offline', 'Standard', 'Filament',
   'Filaments', 'Software', 'Hardware', 'Stop', 'Reset', 'Test', 'Code',
   'Token', 'Server', 'Port', 'Plate', 'Layer', 'Active', 'Total', 'Avatar',
@@ -209,6 +212,7 @@ const FR_COGNATES = [
 // Italian cognates.
 const IT_COGNATES = [
   'Bambu Cloud', 'Orca Cloud',  // brand names — same in every locale
+  'AMS Filament Backup',  // Bambu Lab product/firmware feature name
   'Email',  // common loanword in Italian, used verbatim in UI labels
   'Status', 'Tag', 'Tags', 'Online', 'Offline', 'Standard', 'Filament',
   'Filaments', 'Software', 'Hardware', 'Stop', 'Reset', 'Test', 'Code',
@@ -249,6 +253,7 @@ const JA_COGNATES = [
 // Portuguese (BR) cognates.
 const PT_BR_COGNATES = [
   'Bambu Cloud', 'Orca Cloud',  // brand names — same in every locale
+  'AMS Filament Backup',  // Bambu Lab product/firmware feature name
   'Status', 'Tag', 'Tags', 'Online', 'Offline', 'Standard', 'Filament',
   'Software', 'Hardware', 'Stop', 'Reset', 'Test', 'Code', 'Token', 'Server',
   'Port', 'Plate', 'Layer', 'Modal', 'Pin', 'Pro', 'Mini', 'Studio', 'Cache',
@@ -316,6 +321,7 @@ const KO_COGNATES = [
 // Spanish cognates — words/phrases that are genuinely identical in Spanish.
 const ES_COGNATES = [
   'Bambu Cloud', 'Orca Cloud',  // brand names — same in every locale
+  'AMS Filament Backup',  // Bambu Lab product/firmware feature name
   'Error', 'Firmware', 'General', 'Control', 'Total', 'total', 'Material',
   'Material:', 'Color', 'Hex', 'Local', 'Global', 'China', 'Editable',
   'Normal', 'Metal', 'Multicolor', 'Proxy', 'Host', 'Factor', 'Original',
@@ -335,6 +341,7 @@ const ES_COGNATES = [
 const TR_COGNATES = [
   'Filament', 'Firmware', 'Disk', 'Hex', 'Test', 'Port', 'Model', 'Metal',
   'Bambu Cloud', 'Orca Cloud',  // brand names — same in every locale
+  'AMS Filament Backup',  // Bambu Lab product/firmware feature name
   'Min', 'Normal', 'Platform', 'Net', 'Trend', 'Commit', 'Global', 'Proxy',
   'N/A', 'email',
   'STARTTLS (Port 587)', 'SSL/TLS (Port 465)',