Jean-Luc Makiola fd8363e356 feat(store): add the Room schema, DAOs and exported schema ...

Phase 1 of docs/OWN-STORE.md. Four tables — task_lists, tasks,
task_alarms, accounts — with the indices, cascades and converters the
plan specifies, plus a DAO per table and the v1 schema JSON committed for
migration testing.

Masters and RECURRENCE-ID overrides share the tasks table, so the unique
index is on (list_id, uid, recurrence_id): an override shares its
master's UID, and a key without recurrence_id would reject exactly the
rows recurrence depends on. SQLite treats NULLs as distinct, so that
index only enforces the override half; the master half is intent, noted
where the index is declared.

PRIORITY is stored as the raw iCalendar integer rather than through the
Priority enum. Priority buckets 1..4 into HIGH, so a converter would
rewrite a server's PRIORITY:3 as 1 before it ever reached disk — the
bucketing belongs in the mapper. Status keeps its converter: that mapping
is total.

Two cascades the plan left unstated: deleting a list takes its tasks,
deleting an account only detaches its lists.

Instrumented tests cover read-back, the cascades and the unique index —
app/src/androidTest is new.

2026-08-13 16:09:11 +02:00

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