Derive the tracker loading state and correct two stale CI comments

[MrTig-afk]

Two unrelated-looking changes with one thing in common: both remove something that was lying.

1. TrackerTab loading is now derived

loading was useState(true) set from inside loadData, which an effect called — a cascading-render pattern. It is now derived during render:

const dataKey = `${selectedDate}|${refreshKey}`;
const loading = loadedFor !== dataKey;

Behaviour is identical, and the spinner actually appears earlier: changing the date now flips loading synchronously during render instead of waiting for the effect, so there is no frame of stale data.

deleteEntry and deleteGroup set setLoadedFor(null) before their await loadData(). That is parity, not polish — those paths previously inherited the full-page spinner from loadData's setLoading(true) prefix, and pure derivation would have silently dropped it.

LibraryTab: deleted the dead setLoading(true); setFolderData({}); prefix in loadFolders. Verified it has exactly one call site (the mount effect at :57), and the component is remounted via key={libraryMountKey} at App.jsx:241, so on every path that runs it loading is already true and folderData already {}.

2. Two stale comments in ci.yml

• The header said Lint = frontend eslint -> 14 errors (pre-existing, see PR). Those are fixed; npm run lint is exit 0.
• The if: always() note justified itself with "Lint is red today (14 pre-existing errors)".

if: always() stays — it is still load-bearing, just for a different reason: when Lint fails on any future PR, Test and Build still run, so one red cycle shows the whole picture instead of three. That reason does not expire with the fix. The comment now says so, and flags the sharp edge that always() is also true on cancellation (!cancelled() is the tighter idiom — a behaviour change, so not done here).

No behaviour change in this workflow: job ids ci and semgrep and the if conditions are untouched.

What this PR does NOT do

eslint-plugin-react-hooks stays pinned exact at 7.0.1. Bumping to 7.1.1 was attempted and reverted: 7.1.1's set-state-in-effect objects to fetching inside an effect at all, not to a synchronous setState prefix. With every synchronous set removed it still flags the bare loadData() / loadFolders() call in the effect body, tracing transitively into the async callback. Measured: under 7.1.1 npx eslint . exits 1 with 2 errors (TrackerTab.jsx:54:21, LibraryTab.jsx:57:21); under 7.0.1 this same code is exit 0 and builds.

Adopting 7.1.1 therefore requires a data-fetching layer, which is an architectural change and a new dependency — parked under its honest title, "stop fetching in effects", not as a lint chore.

Verification

• npx eslint . -> exit 0
• npm run build -> exit 0
• No test suite exists for the frontend; the spinner behaviour was reasoned from the code, not exercised in a running app. Not claiming otherwise.

Summary by CodeRabbit

• Bug Fixes

  • Preserved existing folders while library data refreshes.
  • Improved tracker refreshes after deleting individual or grouped entries.
  • Enhanced tracker loading indicators to reflect requested dates and current data.

• Chores

  • Clarified CI workflow comments about linting and test/build behavior.

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Project	Deployment	Actions	Updated (UTC)
nutritional-tracker	Ready	Preview	Aug 20, 2026 9:25am

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📝 Walkthrough

Walkthrough

The changes update CI workflow comments and frontend loading-state handling. Library folder loads preserve existing data. Tracker loading derives from the active date and refresh key, ignores stale concurrent responses, and marks data stale before deletion-triggered refreshes.

Changes

Loading state and CI workflow

Layer / File(s)	Summary
CI workflow documentation .github/workflows/ci.yml	The comments record successful frontend lint and explain the always() behavior for Test and Build.
Library folder loading behavior frontend/src/tabs/LibraryTab.jsx	loadFolders no longer shows a reset loading state or clears cached folders before fetching.
Tracker refresh state frontend/src/tabs/TrackerTab.jsx	Tracker loading derives from requested and loaded date/refresh keys. Concurrent loads accept only the latest response. Deletion handlers invalidate the loaded key before reloading.

Estimated code review effort: 2 (Simple) | ~10 minutes

Merge Risk: 🟡 Moderate · up to e5627

The loading changes can show stale or empty data after a failed fetch and can leave the active date stuck on a spinner after overlapping deletion and refresh activity. These bounded correctness issues should be fixed before merging.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 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 tracker loading-state change and the two stale CI comment updates.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
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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Actionable comments posted: 1

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Inline comments:
In `@frontend/src/tabs/TrackerTab.jsx`:
- Around line 48-52: Update loadData to identify the latest request and apply
goals, logData, and loadedFor only when that request succeeds and still matches
dataKey; prevent older or failed requests from marking the current key loaded.
Track request failures separately, abort or invalidate superseded requests
including deletion-triggered reloads, and render logData only when its
associated key matches dataKey.

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• .github/workflows/ci.yml
• frontend/src/tabs/LibraryTab.jsx
• frontend/src/tabs/TrackerTab.jsx

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• frontend/src/tabs/LibraryTab.jsx

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[MrTig-afk]

Review read in full before merging. One Major finding, verified against the code rather than taken at face value. Partly applied, partly declined — reasons below.

APPLIED — the overlap can strand the spinner

Correct, and it matters. Two loads can be in flight when the date changes twice quickly, or when a delete-triggered reload overlaps one. The slower earlier request lands last, and finally { setLoadedFor(dataKey) } marks its own stale key loaded — so loading stays true and the spinner is stranded until something else triggers a load.

Fixed in e562713 with a latest-wins sequence guard rather than an abort controller:

const reqSeq = useRef(0);
const loadData = useCallback(async () => {
  const seq = ++reqSeq.current;
  try { ...; if (seq !== reqSeq.current) return; setGoals(g); setLogData(l); }
  catch (e) { if (seq !== reqSeq.current) return; ... }
  finally { if (seq === reqSeq.current) setLoadedFor(dataKey); }
}, [selectedDate, dataKey]);

A superseded request now updates nothing — not goals, not logData, not loadedFor. That closes both the stranded spinner and the stale-overwrite.

DECLINED — "can show the wrong date", as a claim about this PR

The underlying race is pre-existing, not introduced here, and this PR made the symptom less wrong, not more:

• Before: finally { setLoading(false) } plus unguarded setGoals/setLogData — a late older request rendered stale data under the new date, silently.
• After (before the guard): the same late request stranded a spinner instead. Visibly stuck, but never silently wrong.

Stale data also cannot render while loading is true — TrackerTab.jsx:105 returns the spinner early.

DECLINED — abort controllers, separate failure tracking, key-gated rendering

Out of scope for this PR and heavier than the problem. The sequence guard removes the failure mode in 3 lines with no new state and no new lifecycle to get wrong.

One genuinely open item, pre-existing and unchanged by this PR: on a rejected apiFetch, catch leaves logData at the previous date's value while loadedFor advances, so the previous date's rows can render under the new date alongside the error banner. That was the behaviour before this PR too (finally { setLoading(false) } did the same). Filed to the project's open-findings list rather than smuggled into a scoped change.

DECLINED — the three ast-grep setstate-same-var warnings

False positives. setGoals(g) / setLogData(l) / setLoadedFor(dataKey) pass freshly computed values, not the state variable they set.

Verification

• npx eslint . -> exit 0
• npm run build -> exit 0
• No frontend test suite exists, so the spinner behaviour is reasoned from the code, not exercised in a running app. Stating that rather than implying coverage.