fix: detect archive duplicates by print name in list view (#315)

The duplicate badge on archive cards only matched by content hash,
so re-sliced prints of the same model (different GCODE, same name)
were not flagged. Now also matches by print name (case-insensitive),
consistent with the detail view's find_duplicates() logic.

CHANGELOG.md

@@ -34,6 +34,7 @@ All notable changes to Bambuddy will be documented in this file.
 - **Reprint Fails with SD Card Error for Archives Without 3MF File** ([#376](https://github.com/maziggy/bambuddy/issues/376)) — When a print was sent from an external slicer and Bambuddy couldn't download the 3MF from the printer during auto-archiving, the fallback archive had no file. Attempting to reprint such an archive tried to upload the data directory as a file, causing a confusing "SD card error." The backend now returns a clear error for file-less archives, and the frontend disables Print/Schedule/Open in Slicer buttons with a tooltip explaining that the 3MF file is unavailable.
 - **Inventory Spool Weight Resets After Print Completes** — After a print, the usage tracker correctly updated `weight_used` (e.g., +1.6g), but periodic AMS status updates recalculated `weight_used` from the AMS remain% sensor and overwrote the precise value. For small prints on large spools (e.g., 1.6g on 1000g), the AMS remain% stays at 100% (integer resolution = 10g steps), resetting `weight_used` back to 0. The AMS weight sync now only increases `weight_used`, never decreases it, preserving precise values from the usage tracker.
 - **Loose Archive Name Matching Could Cause Wrong Archive Reuse** ([#374](https://github.com/maziggy/bambuddy/issues/374)) — The `on_print_start` callback used `ilike('%{name}%')` to find existing "printing" archives, which meant a print named "Clip" could incorrectly match "Cable Clip" or "Clip Stand". This could cause a new print to reuse the wrong archive or skip creating one. Tightened to exact `print_name` match or exact filename variants (`.3mf`, `.gcode.3mf`).
+- **Archive Duplicate Badge Misses Name-Based Duplicates** ([#315](https://github.com/maziggy/bambuddy/issues/315)) — The duplicate badge on archive cards only matched by file content hash, so re-sliced prints of the same model (different GCODE, same print name) were not flagged as duplicates. Now also matches by print name (case-insensitive), consistent with the detail view's duplicate detection.
 
 ### Improved
 - **Phantom Print Investigation — Logging & Hardening** ([#374](https://github.com/maziggy/bambuddy/issues/374)) — Added targeted logging and hardening to help diagnose reports of prints starting automatically without user input. Debug log volume reduced ~90% by suppressing `sqlalchemy.engine` (changed from INFO to WARNING) and `aiosqlite` (new WARNING suppression) noise that previously filled 2.5MB in 16 minutes. Every `start_print()` call now logs a `PRINT COMMAND` trace with the caller's file, line, and function name. The print scheduler logs pending queue items when found. `on_print_complete` warns when multiple queue items are in "printing" status for the same printer, which signals a state inconsistency.

backend/app/api/routes/archives.py

@@ -134,13 +134,15 @@ async def list_archives(
         offset=offset,
     )
 
-    # Get set of hashes that have duplicates (efficient single query)
-    duplicate_hashes = await service.get_duplicate_hashes()
+    # Get sets of hashes and names that have duplicates (efficient single queries)
+    duplicate_hashes, duplicate_names = await service.get_duplicate_hashes_and_names()
 
-    # Mark archives that have duplicates
+    # Mark archives that have duplicates (by hash or by print name)
     result = []
     for a in archives:
-        has_duplicate = a.content_hash in duplicate_hashes if a.content_hash else False
+        has_hash_dup = a.content_hash in duplicate_hashes if a.content_hash else False
+        has_name_dup = a.print_name and a.print_name.lower() in duplicate_names
+        has_duplicate = has_hash_dup or has_name_dup
         result.append(archive_to_response(a, duplicate_count=1 if has_duplicate else 0))
     return result
 

backend/app/services/archive.py

@@ -727,10 +727,10 @@ class ArchiveService:
                 sha256.update(chunk)
         return sha256.hexdigest()
 
-    async def get_duplicate_hashes(self) -> set[str]:
-        """Get all content hashes that appear more than once.
+    async def get_duplicate_hashes_and_names(self) -> tuple[set[str], set[str]]:
+        """Get all content hashes and print names that appear more than once.
 
-        Returns a set of hashes that have duplicates.
+        Returns a tuple of (duplicate_hashes, duplicate_names).
         """
         from sqlalchemy import func
 
@@ -740,7 +740,17 @@ class ArchiveService:
             .group_by(PrintArchive.content_hash)
             .having(func.count(PrintArchive.id) > 1)
         )
-        return {row[0] for row in result.all()}
+        duplicate_hashes = {row[0] for row in result.all()}
+
+        result = await self.db.execute(
+            select(func.lower(PrintArchive.print_name))
+            .where(PrintArchive.print_name.isnot(None))
+            .group_by(func.lower(PrintArchive.print_name))
+            .having(func.count(PrintArchive.id) > 1)
+        )
+        duplicate_names = {row[0] for row in result.all()}
+
+        return duplicate_hashes, duplicate_names
 
     async def find_duplicates(
         self,