thread_id: 019f6ac6-58d0-75f0-a7b9-d9e0a7889bd8
updated_at: 2026-07-17T06:56:25+00:00
rollout_path: /home/Messier82/.codex/sessions/2026/07/16/rollout-2026-07-16T14-53-31-019f6ac6-58d0-75f0-a7b9-d9e0a7889bd8.jsonl
cwd: /home/Messier82/projects/car-parts-comparator-poc
git_branch: main

# Search-history feature was specified, implemented across web/desktop/Android, measurement/UTM plumbing was removed, builds were regenerated, and the work was committed.

Rollout context: repo `/home/Messier82/projects/car-parts-comparator-poc`; the user first insisted on functional-spec-first feature work, then approved the draft and later requested implementation, packaging, and finally a commit. The feature became `Meklēšanas vēsture` (Latvian naming preferred) and was explicitly modeled as recent search history, not saved searches/alerts.

## Task 1: Functional specification for search history

Outcome: success

Preference signals:
- The user said: "I want to implement a feature. We shall start from the functional docs and only after finalizing those, proceeding." -> for significant features, default to spec-first and do not start implementation before the spec is approved.
- The user objected to a dedicated control: "Beside the search field? That how?" and later "I think separate button to view history is unnecessary. In the industry, the history is shown on input focus" -> default the history UI to the conventional input-focus/autocomplete pattern, not a separate visible button.
- The user clarified keyboard behavior: "if keyboard was used to select the item, pressing tab will just prefill it" -> preserve the distinction between Enter/click (search immediately) and Tab (prefill only) when history is keyboard-navigated.
- The user asked "what measurement?" and then said "I think we can safely remove all of it. We don't really need it" -> search-history work should not preserve separate search/click analytics plumbing as a requirement.

Key steps:
- Drafted `SEARCH-HISTORY-FUNCTIONAL-SPEC.md` and iterated it through several approval questions.
- Narrowed the UI from a dedicated icon/button to focus-driven history below the input.
- Resolved the measurement question by removing the separate analytics system from the product docs and treating search history as the only retained search-related data.

Failures and how to do differently:
- The first spec draft used a separate history action and left measurement ambiguity open; the user corrected both. Future similar work should ask earlier whether history should be input-focus based and whether any analytics must remain.
- Keyboard behavior was initially underspecified; future drafts should state Enter vs Tab behavior explicitly whenever history is navigable by keyboard.

Reusable knowledge:
- The approved history spec ended up as `SEARCH-HISTORY-FUNCTIONAL-SPEC.md` with: 20-entry cap, canonical deduplication, most-recent-first ordering, backend persistence plus browser fallback, and no separate measurement/analytics copy.
- The main functional spec and purchase-plan docs were updated to refer to search history and to remove stale measurement terminology.

References:
- `SEARCH-HISTORY-FUNCTIONAL-SPEC.md` approved v1.1.
- User wording that drove UI behavior: "history is shown on input focus".
- User wording that drove keyboard behavior: "pressing tab will just prefill it".
- User wording that removed analytics: "We don't really need it".

## Task 2: Implement, verify, and commit the feature

Outcome: success

Preference signals:
- After approval, the user said: "Go ahead with the implementation" -> once the spec is approved, proceed directly to implementation.
- The user later said: "Commit" (twice) -> commit the finished feature as a single changeset rather than leaving it uncommitted.

Key steps:
- Implemented shared search-history contract/types, backend persistence, desktop JSON storage, Android Preferences storage, and a browser fallback store.
- Wired the web UI so history opens on focus of an empty search field, closes when typing starts, and is navigable by keyboard.
- Removed the old measurement pipeline: deleted `measurement.ts`, `statsPage.ts`, `/api/searches`, `/stats`, `sid` plumbing, and link-decoration / UTM code.
- Added regression tests for search history domain/storage/backend and for the desktop history storage path.
- Verified with `npm test`, `npm run test:web`, `npm run typecheck`, `npm run lint`, `npm run build:web`, `npm run build:desktop`, `npm run build:android`, and `npm run check:engine-browser`.
- Built release artifacts twice after the input-focus UX change so the packaged binaries matched the final interaction.
- Committed everything as `522250c feat: add persistent search history`.

Failures and how to do differently:
- The first implementation exposed a separate history button/icon; the user rejected that, so the UI had to be revised to focus-driven history.
- The initial desktop/Android artifacts were built before the final history-open-on-focus adjustment, so the binaries had to be rebuilt. Future artifact requests should wait until UX is fully settled.
- The durable pending-change handling needed an extra pass to prevent backend stale-state from restoring deleted history after restart; future persistence work should explicitly account for unsynchronized local deletes, not just inserts.

Reusable knowledge:
- Hosted web uses `/api/search-history` backed by SQLite; desktop stores a JSON file under app `userData`; Android uses Capacitor Preferences.
- The final UX is: focusing an empty search field opens history; typing closes it; clearing while focused reopens it; there is no separate history button; the input is not auto-focused on page load.
- The project still keeps the search-history recent list, but no longer keeps search-result/clickout analytics or UTM decoration.
- Packaging commands that worked here: `npm run package:win:portable` and `npm run package:android:debug`.

References:
- Commit: `522250c feat: add persistent search history`
- Final artifact paths:
  - `release/Car-Parts-Comparator-0.1.3-portable-x64.exe`
  - `android/app/build/outputs/apk/debug/app-debug.apk`
- Verification outputs:
  - `npm test` passed 133 backend tests.
  - `npm run test:web` passed 50 web tests.
  - `npm run typecheck`, `npm run lint`, `npm run build:web`, `npm run build:desktop`, and `npm run build:android` passed.
  - `npm run check:engine-browser` remained green after the changes.
- Rebuilt artifact checksums after the final UX revision:
  - Windows portable EXE: `3af9409537f619cdec96570b209fc549d0a354af22c26f2aeff78ea77a5b29e4`
  - Android debug APK: `b7f960e5de8e77c97508918aca2e16d1b3d66b6b8707772843994de13508b141`