refactor: persistence snapshot reads and mention filtering [WPB-8645]

[MohamadJaara]

https://wearezeta.atlassian.net/browse/WPB-8645

Why

Kalium-owned per-key FlowCache can make correctness-sensitive reads depend on replayed observation state. This PR removes that shared cache layer from persistence and adds narrow snapshot reads for fresh database decisions.

It also exposes member mention filtering so app-side callers can reuse an already observed member list without collecting the members flow again.

What changed

• Removed FlowCache and its database-builder wiring.
• Added narrow DAO snapshot APIs for team lookup, conversation last-read date, member admin checks, member count aggregates, and direct member reads.
• Updated correctness-sensitive repository/use-case paths to use snapshot reads instead of .first() on observed flows.
• Extracted MembersToMentionUseCase.filterConversationMembers(...) for app-side member snapshot reuse.
• Added/updated DAO and use-case regression coverage for fresh snapshot reads.

[github-actions]

Test Results

39 tests   39 ✅  5s ⏱️
 4 suites   0 💤
 4 files     0 ❌

Results for commit a599388.

♻️ This comment has been updated with latest results.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 75.94937% with 19 lines in your changes missing coverage. Please review.
✅ Project coverage is 61.53%. Comparing base (48a7574) to head (a599388).
⚠️ Report is 66 commits behind head on develop.

Files with missing lines	Patch %	Lines
.../logic/data/conversation/ConversationRepository.kt	27.77%	13 Missing ⚠️
.../com/wire/kalium/logic/data/call/CallRepository.kt	71.42%	1 Missing and 1 partial ⚠️
...gic/sync/receiver/handler/CallingMessageHandler.kt	60.00%	0 Missing and 2 partials ⚠️
...lin/com/wire/kalium/persistence/dao/UserDAOImpl.kt	85.71%	0 Missing and 1 partial ⚠️
...reateAndPersistRecentlyEndedCallMetadataUseCase.kt	85.71%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #4177      +/-   ##
=============================================
- Coverage      61.55%   61.53%   -0.02%     
- Complexity      4082     4089       +7     
=============================================
  Files           2104     2105       +1     
  Lines          69424    69463      +39     
  Branches        6842     6844       +2     
=============================================
+ Hits           42733    42746      +13     
- Misses         23938    23962      +24     
- Partials        2753     2755       +2     

Files with missing lines	Coverage Δ
.../kotlin/com/wire/kalium/persistence/dao/UserDAO.kt	97.24% <ø> (ø)
...um/persistence/dao/conversation/ConversationDAO.kt	85.71% <ø> (ø)
...ersistence/dao/conversation/ConversationDAOImpl.kt	79.94% <100.00%> (ø)
...om/wire/kalium/persistence/dao/member/MemberDAO.kt	79.81% <100.00%> (+6.89%)	⬆️
.../wire/kalium/persistence/db/UserDatabaseBuilder.kt	89.01% <100.00%> (-0.55%)	⬇️
...lium/logic/feature/call/ShouldRemoteMuteChecker.kt	100.00% <100.00%> (+14.28%)	⬆️
.../conversation/UpdateConversationReadDateUseCase.kt	91.80% <100.00%> (ø)
...essage/confirmation/ConfirmationDeliveryHandler.kt	75.55% <100.00%> (ø)
...lin/com/wire/kalium/persistence/dao/UserDAOImpl.kt	58.00% <85.71%> (-0.36%)	⬇️
...reateAndPersistRecentlyEndedCallMetadataUseCase.kt	74.35% <85.71%> (-4.22%)	⬇️
... and 3 more

... and 8 files with indirect coverage changes

---

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[github-actions]

Bencher Report

Branch	mo/refactor/persistence-snapshot-reads
Testbed	ubuntu-latest

⚠️ WARNING: No Threshold found!

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• Latency (nanoseconds (ns))

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Benchmark	Latency	microseconds (µs)
com.wire.kalium.benchmarks.logic.CoreLogicBenchmark.createObjectInFiles	📈 view plot ⚠️ NO THRESHOLD	885.71 µs
com.wire.kalium.benchmarks.logic.CoreLogicBenchmark.createObjectInMemory	📈 view plot ⚠️ NO THRESHOLD	349,378.99 µs
com.wire.kalium.benchmarks.persistence.MessageReadBenchmark.inboxPagingDeepPageBenchmark	📈 view plot ⚠️ NO THRESHOLD	127,755.91 µs
com.wire.kalium.benchmarks.persistence.MessageReadBenchmark.inboxPagingFirstPageBenchmark	📈 view plot ⚠️ NO THRESHOLD	121,821.49 µs
com.wire.kalium.benchmarks.persistence.MessageReadBenchmark.localMarkAsReadBenchmark	📈 view plot ⚠️ NO THRESHOLD	3,273.46 µs
com.wire.kalium.benchmarks.persistence.MessageReadBenchmark.messagePagingDeepPageBenchmark	📈 view plot ⚠️ NO THRESHOLD	27,081.33 µs
com.wire.kalium.benchmarks.persistence.MessageReadBenchmark.messagePagingFirstPageBenchmark	📈 view plot ⚠️ NO THRESHOLD	11,222.24 µs
com.wire.kalium.benchmarks.persistence.MessagesNoPragmaTuneBenchmark.messageInsertionBenchmark	📈 view plot ⚠️ NO THRESHOLD	1,218,356.84 µs
com.wire.kalium.benchmarks.persistence.MessagesNoPragmaTuneBenchmark.queryMessagesBenchmark	📈 view plot ⚠️ NO THRESHOLD	20,744.22 µs

🐰 View full continuous benchmarking report in Bencher

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[github-actions]

Bencher Report

Branch	${GITHUB_HEAD_REF}
Testbed	ubuntu-latest

⚠️ WARNING: No Threshold found!

Without a Threshold, no Alerts will ever be generated.

• Latency (nanoseconds (ns))

Click here to create a new Threshold
For more information, see the Threshold documentation.
To only post results if a Threshold exists, set the --ci-only-thresholds flag.

Click to view all benchmark results

Benchmark	Latency	microseconds (µs)
com.wire.kalium.benchmarks.logic.CoreLogicBenchmark.createObjectInFiles	📈 view plot ⚠️ NO THRESHOLD	875.35 µs
com.wire.kalium.benchmarks.logic.CoreLogicBenchmark.createObjectInMemory	📈 view plot ⚠️ NO THRESHOLD	335,840.30 µs
com.wire.kalium.benchmarks.persistence.MessageReadBenchmark.inboxPagingDeepPageBenchmark	📈 view plot ⚠️ NO THRESHOLD	131,916.47 µs
com.wire.kalium.benchmarks.persistence.MessageReadBenchmark.inboxPagingFirstPageBenchmark	📈 view plot ⚠️ NO THRESHOLD	128,242.83 µs
com.wire.kalium.benchmarks.persistence.MessageReadBenchmark.localMarkAsReadBenchmark	📈 view plot ⚠️ NO THRESHOLD	3,474.96 µs
com.wire.kalium.benchmarks.persistence.MessageReadBenchmark.messagePagingDeepPageBenchmark	📈 view plot ⚠️ NO THRESHOLD	36,792.16 µs
com.wire.kalium.benchmarks.persistence.MessageReadBenchmark.messagePagingFirstPageBenchmark	📈 view plot ⚠️ NO THRESHOLD	21,644.81 µs
com.wire.kalium.benchmarks.persistence.MessagesNoPragmaTuneBenchmark.messageInsertionBenchmark	📈 view plot ⚠️ NO THRESHOLD	1,254,198.81 µs
com.wire.kalium.benchmarks.persistence.MessagesNoPragmaTuneBenchmark.queryMessagesBenchmark	📈 view plot ⚠️ NO THRESHOLD	19,904.19 µs

🐰 View full continuous benchmarking report in Bencher