feat(children): adult profiles for parents who log their own chores (#1061)

[tempus2016]

Closes #1061

Parents who track their own chores had to add themselves as children and then approve each other's work. A profile can now be marked as an adult.

What changes

Backend

• New is_adult flag on a profile (model, taskmate/add_child, taskmate/update_child). It is published on the overview sensor only when true, so the attribute size is unchanged for families without adults.
• An adult's own completions are approved straight away: normal chores, bonus sub-tasks and timed sessions (including the overnight close-out). Children's completions are unchanged. A photo or note the chore requires is still asked for. Team chores and bounties keep their current rules.

Admin panel

• An "Adult profile" switch in the add/edit child dialog, with an "Adult" tag on the profile card.

Cards

• Family-wide cards leave adult profiles out by default, and show them after the kids when the card sets show_adults: true. Covered: leaderboard, overview, points, points display, graph, streak, weekly, calendar, sticker chart, reward progress and the parent dashboard (overview and points sections; approvals and rotation still name everyone).
• The "Show adults" toggle appears in those card editors once the family has an adult profile.
• A card pinned to one child_id is unaffected, so an adult can still have a card of their own.
• Kiosk and chore board: an unconfigured card follows the same rule, and an adult picked explicitly in the card's child list counts as opted in.
• Shared logic lives in taskmate-attr-resolver.js (__taskmate_family_children, __taskmate_adults_field).

Translations: all new strings in every locale (da, de, en, en-GB, fr, nb, nn, pl, pt, pt-BR).

Testing

• tests/test_adult_profiles.py: adult chore, sub-task and timed session auto-approve, a child still waits, and the model round-trips. 3 of these fail on main.
• tests/frontend/taskmate-adult-profiles.test.cjs: filtering, ordering, child_id bypass, editor toggle, leaderboard render.
• Full suite: 3240 passed; card render tests 675 passed; ESLint, ruff and translation parity clean.
• Tested on ha-dev: over WebSocket, an adult's completion of an approval-required chore was approved with points (+7) while a child's stayed pending, and changing a profile to adult was saved. Screenshots checked the leaderboard, overview (playroom) and points display with and without show_adults, the editor toggle, the panel tag and the dialog switch. All test data was removed afterwards.