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feat(statistics): show cache tokens and report whole-turn totals - #104
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The statistics views only reported input, output and reasoning tokens, so prompt cache usage was invisible. Cache reads were already collected as `cachedInputTokens`; cache writes never crossed the pi bridge. - pi-bridge now forwards Pi's `usage.cacheWrite` as `cache_write_tokens` next to the existing `cached_input_tokens` (cache read). - Plumbed `cacheWriteTokens` through LlmTokenUsage, ChatUsageStatistics, SharedPiUsage and PersistedChatUsage, including archive import/export and `cacheWriteTokensAvailable` flags so older backups and records stay compatible. - Android settings now show a "Cache tokens" card and iOS's native statistics view a matching "Cache tokens" section; both message statistics popups list cache read and cache write values. - Estimated usage marks cache tokens unavailable so Android and iOS agree instead of showing 0. - Tests cover aggregation, archive round trip, native snapshot export, analytics properties and pi usage mapping.
Statistics only showed the last model request of a turn: Pi reports usage per API call and the bridge forwarded it verbatim, so tool-heavy turns under-reported tokens and the output rate divided that one request by the whole turn window. - pi-bridge accumulates usage across every request in a turn (tool loops, auto retries, injected follow-ups) and returns the total together with the real request_count and the summed streaming time (output_duration_ms). - Android and iOS plumb outputDurationMillis through their usage models, persistence, archive import/export and availability flags; request_count is parsed from the bridge again. - Output rate prefers the recorded generation time and falls back to the turn window for records created before this change. - Tests cover bridge accumulation, both platform parsers, the archive round trip and the speed sample calculation.
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Included review availability: This review used your included allowance. Your plan provides up to 4 included reviews per hour; 2 remain after this review. 📝 WalkthroughWalkthroughThe change carries cache-write token counts and output duration through provider usage, agent turns, persistence, statistics, analytics, and Android and iOS displays. Statistics can use recorded output duration to calculate output-token speed. ChangesUsage metadata end-to-end
Priority: ➖ Normal Estimated code review effort: 3 (Moderate) | ~25 minutes Change: Feature Sequence Diagram(s)sequenceDiagram
participant AgentSessionEvents
participant AgentSessionState
participant RunTurn
participant FollowUp
AgentSessionEvents->>AgentSessionState: Accumulate completed assistant usage and output duration
RunTurn->>AgentSessionState: Read accumulated turn usage
AgentSessionState-->>RunTurn: Return token totals, request count, and duration
FollowUp->>AgentSessionState: Continue or read turn usage
AgentSessionState-->>FollowUp: Return accumulated totals
Suggested reviewers: Merge Risk: ⚪ Minimal · up to No actionable merge-blocking issue remains; the change is mergeable after normal checks. Security Architecture ReviewSecurity architecture risk: 🔵 Low · up to The change expands usage reporting and saved history without an established increase in access or permissions. Remaining uncertainty concerns interrupted or overlapping operations and incomplete coverage of external callers. Retained concerns Security review detailsSecurity Blast Radius
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Full details: Docstring CoverageExplanation Docstring coverage is 2.13% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 47 functions across 24 files. (1 skipped: 1 unsupported.)
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Actionable comments posted: 3
- 🪄 Fix CodeRabbit comments on this PR
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Inline comments:
Review comments at @iosApp/App/Settings/NativeSettingsView.swift:
- Around line 2200-2202: Add Persian translations for “Cache tokens,” “Cached
read,” and “Cached write” in the translation map used by NativeSettingsView, or
provide Persian values as the third argument to the corresponding model.text
calls in the cache-token Section.
Review comments at @pi-bridge/src/bridge.ts:
- Line 3022: Update runNativeAgentPrompt so the idle follow_up path in
followUpNativeAgentSession preserves usage accumulated by the preceding run_turn
instead of resetting it. Make usage resetting configurable for this call while
retaining the existing reset behavior for normal prompts.
Review comments at
@shared/src/commonMain/kotlin/com/zhousl/aether/data/chatdb/SharedChatHistoryStore.kt:
- Around line 610-621: Update the fallback defaults for
cacheWriteTokensAvailable and outputDurationMillisAvailable to derive
availability from the presence of their corresponding cacheWriteTokens and
outputDurationMillis keys in usage. Preserve explicit availability flags when
present.
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📒 Files selected for processing (26)
app/src/main/java/com/zhousl/aether/data/ChatRepository.ktapp/src/main/java/com/zhousl/aether/data/LlmModels.ktapp/src/main/java/com/zhousl/aether/data/SessionExecutionManager.ktapp/src/main/java/com/zhousl/aether/data/pi/PiProviderMapper.ktapp/src/main/java/com/zhousl/aether/ui/AetherUiState.ktapp/src/main/java/com/zhousl/aether/ui/AetherViewModel.ktapp/src/main/java/com/zhousl/aether/ui/ConversationMessages.ktapp/src/main/java/com/zhousl/aether/ui/SettingsScreen.ktapp/src/test/java/com/zhousl/aether/data/pi/PiProviderMapperTest.ktiosApp/App/Settings/NativeSettingsView.swiftpi-bridge/src/bridge.tspi-bridge/tests/bridge.test.mjsshared/src/commonMain/composeResources/values-zh-rCN/strings.xmlshared/src/commonMain/composeResources/values/strings.xmlshared/src/commonMain/kotlin/com/zhousl/aether/data/SharedUsageStatistics.ktshared/src/commonMain/kotlin/com/zhousl/aether/data/chatdb/AndroidChatArchiveCodec.ktshared/src/commonMain/kotlin/com/zhousl/aether/data/chatdb/SharedChatHistoryStore.ktshared/src/commonMain/kotlin/com/zhousl/aether/data/pi/SharedPiChatClient.ktshared/src/commonTest/kotlin/com/zhousl/aether/data/SharedAppDataArchiveTest.ktshared/src/commonTest/kotlin/com/zhousl/aether/data/SharedUsageStatisticsTest.ktshared/src/commonTest/kotlin/com/zhousl/aether/data/pi/SharedPiChatClientTest.ktshared/src/iosMain/kotlin/com/zhousl/aether/ui/IosChatAnalytics.ktshared/src/iosMain/kotlin/com/zhousl/aether/ui/IosComposeApp.ktshared/src/iosMain/kotlin/com/zhousl/aether/ui/SharedConversationMessages.ktshared/src/iosTest/kotlin/com/zhousl/aether/ui/IosAnalyticsTest.ktshared/src/iosTest/kotlin/com/zhousl/aether/ui/NativeSettingsBridgeTest.kt
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An injected message that arrives after the turn stopped streaming is replayed through follow_up, which restarted the usage window and reported only that last request. Legacy usage records also turned missing cache and generation-time fields into explicit zeros. - pi-bridge only resets the turn usage window for fresh prompts, so a deferred follow-up keeps accumulating into the totals it continues. - The history parser derives the new availability flags from key presence; Android already treats an absent value as unavailable. - Persian translations for the cache token rows in the Compose resources and the iOS native settings map. - The bridge test asserts the follow-up totals include the preceding run_turn.
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Changes
per-message statistics popup (Android and iOS).
usage.cacheWritethrough pi-bridge.follow-ups) and return the turn total with the real
request_countand thesummed streaming time; the output rate uses that generation time.
speed sample calculation.
Summary by CodeRabbit