feat: filament labels + export/print flows + AML

[akira69]

Summary

• Add filament label printing and export flow, including QR codes that link to filament pages.
• Split print vs export into separate flows with dedicated dialogs, presets, and content/layout controls.
• Add AML export (per-label or per-page) and PNG export with configurable DPI, label size, margins, and safe zone.
• Improve selection pages (spool + filament) with shared search, filters, pagination, and layout fixes.
• Add server-side search utilities and DB indexes to speed up selection/search.

Detailed Changes

• New filament label selection flow parallel to spools, with shared Export/Print selection UI and search controls.
• QR codes for filament labels target the filament detail page.
• New export dialogs (spool + filament) supporting PNG/AML, DPI, and AML split options.
• New print dialogs (spool + filament) with separate presets from export.
• Filament/spool presets split into print vs image/export presets.
• Added advanced table filtering (search + column filters), pagination controls, and layout fixes to avoid overlap or clipping.
• Added server-side general search, helpers, and indexes to improve large dataset responsiveness.
• Added helper script to import SpoolmanDB as an optional data source (not wired into runtime).

Feature Requests Addressed (Upstream)

• Donkie/Spoolman Issue Ability to print QR-codes for Filament aswell as Spool Donkie/Spoolman#824: “Ability to print QR-codes for Filament aswell as Spool.”
  • Ability to print QR-codes for Filament aswell as Spool Donkie/Spoolman#824
  • Our changes add filament label printing and QR codes that link to filament pages.
• Donkie/Spoolman Discussion QR code for sample tags Donkie/Spoolman#662: “QR code for sample tags.” (partial)
  • QR code for sample tags Donkie/Spoolman#662
  • Enables printing filament labels with QR codes; does not add inventory summary fields.
• Donkie/Spoolman Discussion Niimbot Label Printer Integration? Donkie/Spoolman#320: “Niimbot Label Printer Integration?” (partial)
  • Niimbot Label Printer Integration? Donkie/Spoolman#320
  • Adds AML/PNG export compatible with external label workflows; does not integrate a specific printer.

Testing

• docker build -t spoolman_labels:test .
• docker run -p 8000:8000 -v "$PWD/data:/home/app/.local/share/spoolman" spoolman_labels:test
• Manual UI verification of selection, print, and export flows

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[akira69]

Addressed feedback: 1) Archived selections now cleared across pages when disabling Show Archived. 2) Return URL now strips base path to avoid duplicated prefixes in base-path deployments. Commit: 3b896d2.

[akira69]

I noticed that multi-page AML wasn't working - and maybe never would.
Addressed in commit f2e6da9.

• Removed the multi-page AML path from export options because Labelife did not reliably load multiple labels/pages from a single AML as expected.
• Replaced that behavior with "Export as .zip" for both PNG and AML exports (one file per label inside the archive).
• Added configurable filename templates for both spool and filament exports under the label-template section
• included tooltip for usage that references the label template rules/tags.
• Added default templates:
  • Spool: {filament.vendor.name}-{filament.material}-{filament.name}-{id}
  • Filament: {vendor.name}-{material}-{name}
• Duplicate file export names are auto-suffixed as 01, 02, 03...
• ZIP naming format is:
  • PNG spool labels.zip / AML spool labels.zip
  • PNG filament labels.zip / AML filament labels.zip

[akira69]

Superseded by PR #2 + follow-up fixes in master. Closing fork-only PR to avoid conflict-heavy duplicate merge.