Include cache tokens in local usage totals (30d/latest tokens)

[Pyaoya]

Summary

The local-usage token rows are computed as input + output only, so cache read / cache
write tokens are dropped. On cache-heavy Claude Code usage that understates the real total
by orders of magnitude: the menu card shows 3.5M for a 30-day window whose cache-inclusive
total is 1.08B — from the same JSONL walk the CLI already reports cached on.

Changed call sites (all saturating_add):

file	function	change
apps/desktop-tauri/src-tauri/src/commands/chart.rs	total_tokens()	+ summary.cached_tokens (feeds thirtyDayTokens / latestTokens)
rust/src/cost_scanner.rs	ModelTokenCounts::total()	+ cached_tokens (per-model rows)
rust/src/cost_scanner.rs	get_daily_token_history() (codex branch)	+ scratch.cached_tokens
rust/src/cost_scanner.rs	add_claude_record_to_daily_tokens()	+ record.cache_read + record.cache_create
apps/desktop-tauri/src-tauri/src/commands/usage_spend.rs	total_token_mix()	+ mix.cache_read_tokens (it already counted cache_creation_tokens)

No change to pricing / total_cost_usd, quota windows, or the de-duplication walk.
De-duplication happens per record before aggregation (requestId+messageId for Claude,
monotonic totals for Codex), so counting the cache buckets cannot double count.

Related issue

No existing issue; this PR is the report (happy to split it into an issue first if you
prefer that workflow).

Affected areas

• Tray panel
• Settings UI — only the Usage & Spend 30d token column changes value, no UI change
• Config file / settings persistence
• CLI
• Provider-specific behavior — Claude and Codex local JSONL scans, same code path
• Installer / release packaging
• Startup / background behavior
• Documentation
• Other:

Validation

I did not have the hosted PR check available (external contributor), so here is the local
slice I ran on Windows (MSVC 14.44.35207, Rust stable 1.98.1, built from tag v0.60.3 at
commit 2e20ac6, i.e. exactly the tree this patch is based on):

• cargo build -p codexbar --release — succeeds (5m24s)
• pnpm --dir apps/desktop-tauri install --frozen-lockfile + pnpm --dir apps/desktop-tauri run tauri:build
  — succeeds, target/release/codexbar-desktop-tauri.exe built
• powershell.exe -ExecutionPolicy Bypass -NoProfile -File scripts\local-check.ps1 —
  not run yet; the unit tests that assert the old input + output expectations will need
  updating (see Notes for reviewers)
• scripts\windows-release-build.ps1 / installer — not applicable to this change
• Thermo-nuclear code quality review — the change is 5 one-line aggregations; happy to
  run through the checklist if you want it before merge

Behaviour check on the same machine (before / after, same data):

before (0.60.3 release):
  codexbar-cli cost --provider claude --format text
    Total:    $818.19
    Tokens:   9,929 input, 3,482,125 output, 1,076,184,758 cached
  spendContract.daily[].totalTokens sum = 3,492,054      <- what the menu card shows

after (this branch):
  spendContract.daily[].totalTokens sum = 1,079,676,812  <- matches input+cache+output
  cost unchanged: $818.19

Independent recount from ~/.claude/projects/**/*.jsonl, deduplicated the same way the
scanner does (requestId + message.id, first occurrence wins; 5,120 unique rows,
4,222 duplicate rows skipped):

metric	tokens
input	9,929
cache read	1,035,278,185
cache write	40,906,573
output	3,482,125
total	1,079,676,812

input + output = 3,492,054, which is exactly the pre-patch panel value, so the scanner
already reads the cache numbers correctly — only the totals dropped them.

UI / tray proof

• Not applicable — no UI/layout change; only the numeric value of an existing row changes
  (30d tokens, latest tokens, and the Usage & Spend 30d token column).
• CUA Driver visual proof attached
• CUA Driver could not be used; equivalent manual proof and explanation attached

Notes for reviewers

• CostSummary.cached_tokens / ModelTokenCounts.cached_tokens already hold
  cache_read + cache_creation for Claude
  (summary.cached_tokens += record.cache_create + record.cache_read;) and
  cached_input_tokens for Codex, so no scanner change was needed.
• Existing tests that assert the old totals (e.g. anything expecting daily_tokens or
  ModelTokenCounts::total() to equal input + output) will need their expectations
  updated — those expectations encoded the bug. I did not touch them in this PR to keep the
  diff reviewable; say the word and I will update them in a follow-up commit on this branch.
• ModelTokenCounts::total() is also used to pick top_model; the ranking is unchanged for
  the datasets I checked (the same model wins with and without cache tokens).
• Separate, unrelated observation from the same machine: the Codex side's
  spendContract.daily[] only had 2 days of rows for a 30-day window. I left that alone.

Summary by CodeRabbit

• Bug Fixes
  • Token usage totals and charts now account for provider-specific cache reporting: Codex cached input is no longer double-counted, while separately reported cache tokens are included for providers such as Claude.
  • Seven-day and thirty-day usage totals now reflect each provider’s reported token totals, including resolved totals from imported usage data.
  • Recent and 30-day chart totals, as well as top-model selection, now use provider-specific token accounting.
  • Token totals continue to use overflow-safe addition.

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• apps/desktop-tauri/src-tauri/src/commands/chart.rs
• apps/desktop-tauri/src-tauri/src/commands/usage_spend.rs
• rust/src/cost_scanner.rs
• rust/src/cost_scanner/tests.rs
• rust/src/spend_contract.rs
• rust/src/spend_contract/opencodex.rs
• rust/src/spend_contract/tests.rs

🚧 Files skipped from review as they are similar to previous changes (3)

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• apps/desktop-tauri/src-tauri/src/commands/usage_spend.rs
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📝 Walkthrough

Walkthrough

Token totals now use provider-specific cache accounting. Codex totals do not add cached input a second time. Totals for providers with separate cache counts include those counts. Spend contracts use resolved imported totals and provider-aware native totals.

Changes

Provider-aware token accounting

Layer / File(s)	Summary
Define provider-aware token totals rust/src/cost_scanner.rs, rust/src/cost_scanner/tests.rs	Model, window, and daily totals apply provider-specific cache rules. Tests check that Codex and Claude totals match their model and daily totals.
Resolve native and imported spend totals rust/src/spend_contract.rs, rust/src/spend_contract/opencodex.rs, rust/src/spend_contract/tests.rs	Spend contracts combine provider-aware native totals with resolved imported totals. The OpenCodex importer accumulates resolved entry totals. Tests cover combining and replacing totals.
Apply provider rules to usage summaries apps/desktop-tauri/src-tauri/src/commands/chart.rs, apps/desktop-tauri/src-tauri/src/commands/usage_spend.rs	Chart totals and top-model selection use provider-aware totals. Spend rows use contract totals for Codex and other listed providers, and provider-aware totals for Claude.

Priority: ➖ Normal

Estimated code review effort: 3 (Moderate) | ~20 minutes

Change: Bug fix

Suggested reviewers: finesssee

Merge Risk: ⚪ Minimal · up to 8176e

The checked token totals remain consistent across the affected spend views. No identified issue blocks merging after normal checks.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 51.35% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 37 functions across 7 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the main change: adding cache tokens to local usage totals, including 30-day and latest totals.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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⚔️ Resolve merge conflicts 💡

• Resolve merge conflict in branch fix/total-tokens-include-cache

🧪 Generate unit tests (beta)

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Inline comments:
In `@rust/src/cost_scanner.rs`:
- Line 128: Update the Codex total calculations in rust/src/cost_scanner.rs at
lines 128 and 922-925 and apps/desktop-tauri/src-tauri/src/commands/chart.rs at
line 443 to use input plus output without adding cached input, since Codex input
already includes cached input. Keep Claude cache accounting separate, and do not
change the shared ModelTokenCounts::total() behavior globally.

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[Pyaoya]

Thanks for the review — you're right, and it's fixed in the latest commit on this branch.

The semantics really do differ per source:

• Claude: usage.input_tokens, cache_read_input_tokens and cache_creation_input_tokens are disjoint classes, so a total has to add them.
• Codex: input_tokens already contains cached_input_tokens. CodexTokenCounts::from_values clamps cached to input, and the pricing path does let non_cached = input.saturating_sub(cached); before applying the input rate — which only makes sense if input is inclusive. On my data: Codex input 346,675,864 > cached 331,599,232, Claude input 9,929 vs cached 1,076,184,758.

So adding the cache bucket was wrong for Codex and right for Claude.

What the fix does now

• A single source of truth: cache_is_separate_from_input(provider) — only codex returns false.
• ModelTokenCounts::total() is back to input + output; the cache-inclusive total moved into total_with_separate_cache() / total_for_provider(provider).
• Applied only at the read sites that know the provider: the spend-contract model rows, the menu-card 30d tokens / latest tokens helper, top_model(), and the usage-spend token mix (Codex call sites pass false, OpenCodex ones pass true).
• get_daily_token_history's Codex branch is back to input + output; the Claude branch keeps adding cache read + creation.

I did not normalise cache into input on the Claude side: that would make Claude's inputTokens overlap with cacheReadTokens, and pi/OMP mirror rows (which are Anthropic-shaped, i.e. disjoint) are merged into Codex summaries too, so a provider-level normalisation would still be wrong for those.

Numbers (local 30-day window, built from tag v0.60.3)

	before	after
Claude spendContract.daily[] sum	3,492,054	1,079,676,812
Claude 30d cost	$818.1882	$818.1882 (unchanged)
Codex gpt-5.6-sol totalTokens	564,718,634 (double counted)	288,770,730 — byte-identical to the 0.60.3 build
Codex 30d cost	$471.4885	$471.4885 (unchanged)

Also fixed in the same pass: the Claude 7d/30d token columns in the usage-spend view were summing input + output only.

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Inline comments:
In `@apps/desktop-tauri/src-tauri/src/commands/usage_spend.rs`:
- Around line 468-469: Update the Codex seven- and thirty-day totals to
calculate native and OpenCodex imported token totals separately, then combine
them so imported cache_read_tokens are included without changing the native
cache rule; locate the aggregation in the Codex contract handling that calls
total_token_mix.

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[Pyaoya]

Handled in 9fa8cd6 — thanks, this one was real too.

You're right that the merged contract can't carry both rules. The Codex 7d/30d path resolved native and OpenCodex-imported rows into a single token_mix (merge_token_mix(native, imported)), so the one boolean I had could only be right for one side: with false the imported cache read tokens were silently dropped.

SpendContract now carries a token_total field (#[serde(skip)], so the wire shape is unchanged) computed where the split is still known: each source is totalled with its own rule — native Codex via spend_token_total(mix, false), the import via spend_token_total(mix, true) — and the results are added, mirroring the existing replace_native behaviour. The usage-spend view reads that field instead of re-summing the merged mix.

Verification on this machine (which has no pi/OMP mirrors and no OpenCodex imports, so the change is a no-op locally): Claude and Codex token numbers are identical to the previous commit, and every model/totalTokens value matches exactly. The only diff between the two builds is f64 last-bit noise in the summed cost ($471.4884715999999 vs $471.4884716), which comes from summing a HashMap's values in iteration order — pre-existing and not affected by this change.

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Inline comments:
In `@rust/src/spend_contract.rs`:
- Line 559: Update build_local_spend_contract_from_summary to pass provider_id
to resolve_token_total and apply the provider-specific native cache rule, so
Claude’s token_total matches its model totals.
- Line 561: Update the imported_total calculation in the spend-token aggregation
to use the importer’s resolved per-entry totals, matching the totals used for
imported model and daily summaries; avoid recalculating with a cache rule that
produces a different result.

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[Finesssee]

Thermo-nuclear code-quality review

Verdict: FINDINGS. Reviewed head 8176eb564. The accounting fixes from the CodeRabbit rounds look correct. The findings below are about how that correctness is encoded.

P1: The cache rule is a provider-name string check in a shared module

cache_is_separate_from_input(provider: &str) -> bool { provider != "codex" } (rust/src/cost_scanner.rs:150) puts a cross-provider branch in the shared scanner. Because it is a negative match, every non-Codex id, including providers added later, silently gets "cache is separate from input". The repo guidelines ask for provider-specific logic to stay out of shared paths, and this is the pattern they rule out.

The root cause is that cached_tokens means two different things depending on who filled it:

• Codex (cost_scanner/codex.rs:20): cached input, which is a subset of input_tokens.
• Claude (cost_scanner.rs:776): cache_create + cache_read, additional to input_tokens.

Everything this PR adds exists to reconcile those two meanings at read time: total_with_separate_cache, total_for_provider, total_tokens_for_provider, the provider_id parameter now threaded through chart.rs::total_tokens and top_model, and the literal "claude" passed in usage_spend.rs:481.

Suggested restructure: normalize at ingest. Have the Codex scanner store uncached input in input_tokens, keeping cached_tokens separate, which it already knows how to split since pricing subtracts it back out. Then both sources mean the same thing and total() is one rule. cache_is_separate_from_input, both *_for_provider methods and the provider-id threading all go away. If normalizing isn't practical, record the accounting mode on the summary as a typed field set by the scanner that produced it (CacheAccounting::{InInput, Separate}), so no caller passes a provider string.

P2: The same rule is written three times

• ModelTokenCounts::total_for_provider (cost_scanner.rs:134)
• CostSummary::total_tokens_for_provider (cost_scanner.rs:161), which reimplements the branch instead of sharing it
• add_claude_record_to_daily_tokens (cost_scanner.rs:1021), which hardcodes input + output + cache_read + cache_create

These three currently agree only because Claude's cached_tokens happens to equal cache_read + cache_create. The ingest normalization above collapses them into one.

P2: A #[serde(skip)] field on the wire contract

SpendContract.token_total and ImportedSpendSource.token_total (spend_contract.rs:200, :243) are skipped internal fields on a wire DTO. The doc comment says why: the merged token_mix "cannot express native and imported rules at once." So the contract now carries two token notions, and only one of them reaches the frontend. Compute the window total inside build_local_spend_contract_from_summary and return it next to the contract, or put it in the wire contract properly. Don't hide it on the DTO.

P3: chart.rs::total_tokens has become an identity wrapper

chart.rs:436 now just forwards to summary.total_tokens_for_provider. Inline it or delete it.

This PR also branches from an older main: cost_scanner.rs is 1,364 lines on main versus 1,024 here. Expect conflicts with #610's scanner changes when you rebase.