31 lines
1.8 KiB
Markdown
31 lines
1.8 KiB
Markdown
# Decision log
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## ADR-01: Local-first persistence
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**Decision:** Use a versioned storage adapter over `localStorage` with validated JSON import/export.
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**Reason:** It keeps a solo project achievable, demonstrates data boundaries and recovery, and avoids unrelated account/cloud work.
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**Consequence:** Data is per-browser; the UI says this clearly and provides a portable backup.
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## ADR-02: Derived progress
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**Decision:** Calculate completion and dashboard summaries from task records.
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**Reason:** Storing calculated progress would introduce synchronisation defects.
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**Evidence:** Domain tests cover empty and partially complete goals.
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## ADR-03: Standards and compatibility
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**Decision:** Use semantic HTML, system fonts, Grid/Flexbox, feature detection and a UUID fallback.
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**Reason:** Avoid browser-specific styling and unnecessary polyfills while keeping a clear backwards-compatibility path.
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## RWD-01: 1680 summary-card orphan
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**Observed:** Visual inspection at 1680×1050 showed a three-column grid with the fourth summary card alone on a second row. Functionality passed, but hierarchy and balance were poor.
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**Decision:** Use a balanced 2×2 summary grid below 1800 px and a four-column row from 1800 px.
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**Verification:** Computed styles changed from three columns to two; `scrollWidth` remained equal to `clientWidth`; the full core journey passed again.
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**Evidence:** `responsive-defect-before-1680x1050.png` and `responsive-fix-after-1680x1050.png`.
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## ADR-04: Truthful manual evidence
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**Decision:** Do not simulate Microsoft Edge or claim physical-device sessions from a Linux host.
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**Reason:** Viewport automation is useful evidence but is not equivalent to two real computers or a genuine Edge build. The supplied protocol makes the remaining evidence reproducible and auditable.
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