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Author SHA1 Message Date
jedarden
2be802aca5 feat(pdftract-2u6q2): implement diagnostic infrastructure
Add DiagnosticsCollector type for thread-safe diagnostic aggregation,
add hint field to DiagnosticJson, add missing error codes
(IMG_SOURCE_MIXED, PROFILE_INVALID, REPAIR_RESCUED_FROM_BACKWARDS_XREF),
and create comprehensive diagnostics documentation.

Changes:
- DiagnosticsCollector: Arc<Mutex<Vec<Diagnostic>>> wrapper with emit()
  helpers for emitting diagnostics from multiple threads
- DiagnosticJson: add hint: Option<String> field for suggested actions
- DiagCode: add ImgSourceMixed, ProfileInvalid, RepairRescuedFromBackwardsXref
- docs/integrations/diagnostics-codes.md: comprehensive code catalog

Closes: pdftract-2u6q2
2026-05-25 13:16:38 -04:00